What does a home electrical installation cost?

HomeoftheFuture
Briefing Paper
Guy Kasier
E&D Systems
Available online September 2010
What does a home electrical installation cost?
Source: Basalte

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www.leonardo-energy.org
1. Introduction
Every developer asks him- or herself: “What will it cost?” The question is burned on
the lips of everyone who wants to build a home or thoroughly renovate one. Often
these people are fobbed off with comments such as: “It’s affordable”. However,
builders and renovators generally have a budget that they would prefer not to
exceed.
The electrical installation is an important part of the home. It not only supplies energy
to all kinds of electrical equipment, but also takes care of lighting comfort and
communication with the outside world through phone, computer, radio and TV
connections. Many modern homes even go a step further and provide electrical
controls for roll-down shutters, sun blinds, curtains, electrically-operated windows,
audio distribution systems, heating, air conditioning and so on.
When the building budget is being drawn up, attention (and, in practice, money) is
paid to the bricks, floor finish, kitchen and bathroom. Generally, the electrical
installation is only thought about at a later stage, even though it is one of the
fundamental items in a home. Often at that time, there are not enough funds
remaining for a good, comfortable installation. The result is a nice house, but with
less comfort, flexibility and communications facilities. After a while, there are
extension leads with multiple sockets lying around on the floor in many places. This
jeopardises electrical safety.
What can we take into account when we want to provide a budget for our electrical
installation? What items must we consider? What items can we think of as optional?
What percentage of the budget do we have to provide for the electrical installation,
and can we express it as a cost per square metre? This article will attempt to answer
these questions and more.
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2. Organisation of the study
We took a floor plan of an existing single-family home. We incorporated wall sockets,
lighting points and operating points into it. After all, they form the basis of the
electrical installation. Then, we calculated the price for four different forms of
installation for the materials used, going by the gross prices (end user price excluding
VAT) of the manufacturers (January 2010 prices). We also estimated the number of
working hours of the installer per installation form and included this in the total price.
Of course, the distribution board, along with its contents, was also included in the
price calculation. Furthermore, for each installation, the costs of telephone and
computer connections along with radio and TV connections have also been included.
A simple doorbell completes the basic installation.
The price calculation does not include the connection costs for the 230V electricity
supply, or the costs of the home connections for telephony and data communications,
radio and TV. These costs are highly dependent on the country and can even differ
from region to region. The distance from the home to the street connections is also
an important element that can differ in every home. Our price calculation is thus only
for the home itself.
The calculated costs are also expressed as a percentage of the total construction
budget. We have set them out against the developed area of the home. In this way,
we can easily make a rough estimate of the costs of the electrical installation in a
different home.
2.1. Four different forms of installation
In our calculation, we were curious about the price differences when choosing one or
another form of installation. That is why we did the calculation for a purely
conventional installation, one with remote-control switches (or pulse switches), one
with an integrated home system (IHS) in star topology, and finally an installation with
an integrated home system (IHS) with a bus.
2.2. The options
In addition to the basic installation that already has sufficient wall sockets, lighting
points, operating points and connections for telephony, computers, radio and TV, we
calculated the prices for different options such as electric roll-down shutters, a door
phone or videophone, ventilators, electric garage door, smoke detectors and
overvoltage protection.
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3. The home
3.1. Area of the home
For this study, we used a plan of a detached single-family home by architect Dirk
Vander Borght (Ghent, Belgium). This home consists of a ground floor containing a
sitting room, dining room, kitchen, entrance, stairwell, toilet, small study, scullery,
garage, terrace and equipment room. There is no cellar.
Figure 1: The ground floor.
The ground floor has a total area of 159 m², including half of the terrace area.
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The space-saving spiral staircase leads to the upstairs hall. On the first floor is the
parents’ bedroom with a dressing area and bathroom, two children’s bedrooms, a
small bathroom with a shower and a guest room that can also be used as a play
room or study. From the parents’ bedroom, you can also reach the roof terrace. The
rest of the roof is a green roof. There is no attic.
Figure 2: The first floor.
The first floor has an area of 84 m², including half of the area of the roof terrace.
The total developed area of the entire home is 243 m², including half of the area
of the terraces.
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3.2. Cost of the home
The cost of a home depends on a large number of factors. There is a wide choice of
different types of stone (and prices), floors, roofing, windows and doors, finishes and
so on. For this reason, architects first do an estimate based on the developed area,
including half of the area of the terraces. The price per m² for a new building varies
on average between 1,000 €/m² and 1,250 €/m².
For our study home with a developed area of 243 m², this would mean a budget of
€243,000 to €303,750. We will take the average here and round the budget to
€275,000.
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4. The different installation methods
As already mentioned, we have not only calculated the cost of a conventional
electrical installation, but also the cost of other forms of installation, including
integrated home systems.
4.1. The conventional installation
For the lighting circuits, the conventional electrical installation is characterised by a
decentralised positioning of the switching elements. In this case, a switch is installed
at the operating point. This has a 230V supply line. There is a physical wire
connection from this switch to the lighting point that must be operated by this switch.
The flexibility and changeability of such an installation can be described as zero,
unless additional wiring is fitted. In most cases, however, this means additional
cutting and grinding in order to fit it, and thus also the repair of the stucco, paint or
wallpaper. In practice, a conventional installation is only modified when it is time for a
major renovation.
4.2. The installation with remote-control switches
For an installation with remote-control switches, also called pulse switches, the
switching elements for the lighting points are centralised in the distribution board.
Separate wiring is laid to the distribution board for each lighting group or point. Push
buttons are used at the operating points instead of switches. When operated, they
send a pulse to the winding of the remote-control switch such that it toggles between
its two states (on or off). For homes, remote-control switches with a winding voltage
of 24V are generally used. This has the advantage that we can do the wiring to the
operating points with multicore cable. In practice, SVV 16 x 0.8 mm² signal cable is
often used.
The flexibility of such an installation is greater than with a conventional installation.
By connecting a push button in the distribution board to another remote-control
switch, we can give it a new function. It is also possible to fit a multiple-push button in
place of an existing push button without cutting and grinding. The additional push
buttons for the lighting points to be operated can then be connected to remote-control
switches in the distribution board. This, of course, is only possible when a few wires
in the control cables were not used in the original installation.
The use of remote-control switches with a 24V winding also increases the safety of
the installation with regard to electrocution. The installation work is easier. Less
cabling has to be fitted in the walls, which saves time. Most cabling runs over the
floor plates. However, the time saved in laying the cables is generally cancelled out
by more connections having to be made in the distribution board. An installation with
remote-control switches can be easily converted into an installation with certain types
of integrated home systems.
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4.3. Installation with an integrated home system with star topology
This installation method is very similar to the previous version. All consumers have
their own cabling to the distribution board where they are connected to output
modules. The push buttons are connected to input modules in the distribution board
by multicore cable. A control panel, or master, receives the signals from the push
buttons via the input modules and commands the necessary actions for the
consumers connected to the output modules.
In such installations, simple voltage-free push buttons of any make can be used. The
great advantage of an integrated home system is that group functions and general
functions (operations for the entire home) can be implemented, and that the flexibility
of the installation is many times greater than with the previous installation forms. The
programming is done by a computer. The function of a push button can be changed
to suit altered requirements at any time.
For the price calculation, we chose the IHC system (Intelligent Home Control) of
Schneider-Electric. Extensive basic solutions can be implemented with this system.
The IHC system has display facilities (as an option) and a standard Ethernet
connection for programming and remote operation.
4.4. Installation with integrated home system with a bus or tree topology
This form of installation is characterised by the use of bus cabling to which not only
the input modules are connected, but often also the output modules. Generally, a
two- or four-core cable is used for the distribution of the supply and data. Depending
on the chosen system, consumers can be connected to decentralised or centralised
(in the distribution board) output modules. The inputs (push buttons, for example) can
be connected to input interfaces that are fitted behind the push buttons in the built-in
box. In many cases, however, producers provide ‘bus push buttons’ that can be
connected directly to the bus cabling.
For the actual price calculation, we selected the Nikobus system from Niko. In this
system, the output modules are placed in the distribution board. The operations are
done with bus push buttons that are connected to the two-wire bus. Naturally, they
have an address. Manual programming is possible, but in this case we will do the
programming with a PC. In this way, we can also implement time and logic functions.
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5. Price calculation of the basic installation
The circuits for wall sockets, lighting circuits, a doorbell, a connection for an electric
oven, the earthing installation including equipotential connections, and the
distribution board with its contents are included in the basic installation. We have also
included the necessary equipment for telephony, radio and TV connections, and the
computer connections in the basic installation. After all, a modern home cannot really
do without these items.
For the price calculation, we used the gross prices of the manufacturers. All prices in
this study exclude VAT. The gross prices are also called the recommended prices or
end user prices. The installer gets a percentage discount on these gross prices when
purchasing. We have estimated the working hours of the installer, using a price per
working hour of 40 €.
When drawing up their offers, installers will rarely if ever use prices that are higher
than the manufacturer’s gross prices. On the contrary, many installers give the
customer a discount. In certain cases, the purchase prices are even used to stay one
step ahead of cut-throat competition. Of course, we advise against this commercial
practice. An installer who only earns from his working hours will have to work many
hours and will have little or no time to solve small or large problems on the site. In
practice, the prices will generally be somewhat lower than those used here.
5.1. The conventional installation
We begin with a single phase 230V 40A connection.
For the switchgear and wall sockets, we chose the Original range of switches by
Niko. This is the producer’s basic range.
For this home, we planned for 130 wall sockets, five of which are of the splash-proof
type for outdoor installation. Most wall sockets are in circuits with a maximum of eight
single or double wall sockets. Single wall sockets have a separate cable to the
distribution board and are also protected separately by an automatic breaker. These
are the wall sockets for the washing machine, the dryer, dishwasher, the kitchen
boiler, the electric oven and the microwave.
For the lighting, we have put in 40 lighting groups. In many cases, each group
consists of a number of lighting points. In total, there are 80 lighting points in the
home. For the two lighting groups in the sitting room, we have provided a control with
two push button dimmers. The standard lamp (without a dimmer in the fitting)
connected to a socket in the sitting room will be controlled by a push button dimmer.
There are 39 operating points in the home. Each operating point can contain one or
more switches. In total, we have used 66 switches and three dimmers.
In the kitchen is a connection for the electric oven.
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For the moment, we have provided a straightforward doorbell installation in the home
with a push button at the front door and a bell in the stairwell.
We have provided a coax connection for radio and TV at eight points in the home. In
the same places, we have also provided a telephone connection and a network
connection for computers. For the telephone installation, we have provided a small
PABX home exchange of the Bticino make. This exchange has one outside line and
eight inside lines. At a later stage (among the options), we could also connect a door
phone or videophone to this.
For the distribution board and modular equipment, we chose Hager. For the
distribution board, we need room for 70 modules of 18 mm. However, we have added
in 30% free space for any subsequent extensions. We thus chose a Vega D cabinet
with 96 modules. In the distribution board, there is a 300 mA differential breaker and
a 30 mA differential breaker for the wet rooms. In addition, there are 24 double-pole
automatic breakers rated at 6A, 16A, 20A and 32A. Finally, there is also space for the
bell transformer and telephone exchange.
As it is a new building, we have provided an earth loop on the outermost foundations
for the earthing installation. This is a 35 mm² solid copper bare conductor. The
earthing installation is finished with an earth breaker and a few equipotential
connections (for example, for the water pipe and other accessible metal parts of the
home).
The following prices include all necessary materials and cabling:
Wall sockets €1,433.61
Lighting installation €1,266.66
Electric oven connection €51.40
Bell installation €32.38
Connections for radio and TV €251.32
Telephony and computer
network
€609.79
Earthing installation €236.93
Distribution board and content €839,52
Labour €3,520.00
Total €8,241.61
When we compare the price of this conventional electrical installation to the total
budget of €275,000, this installation represents 2.9969%. We can round this to 3%.
The different items of the electrical installation represent a percentage of the total
price of the installation (see diagram below).
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The conventional installation
17%
15%
1%
0%
3%
7%
3%10%
44%
Wall sockets
Lighting installation
Electric oven connection
Bell installation
Connections for radio and TV
Telephony and computer network
Earthing installation
Distribution board and content
Labour
5.2. Installation with remote switches
In this case, we do not install switches, but push buttons at the operating points. The
cables between the operating points and the lighting groups disappear. Each lighting
group has its own cabling to the distribution board. From there, low voltage cables
(SVV 16 x 0.8 mm²) are laid to the various operating points. There are wires left over
in the multicore cable for any later extensions. The remote-control switches to
operate the lighting are fitted in the distribution board. Here, too, we have used wall
sockets and push buttons of the Niko make. The distribution board and the modular
equipment is by Hager. The telephone exchange is from Bticino. For the dimmer-
driven lighting circuits, we have used the same push button dimmers as with the
conventional installation.
network
€609.79
Distribution board and content €2,029.04
Labour €3,520.00
Total €9,656.06
When we compare the price of this installation with remote-control switches to the
total budget of €275,000, this installation represents 3.5112%. We can round this to
3.5%.
The different items in the electrical installation represent a percentage of the total
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Installation with remote
switches
15%
15%
1%
0%
3%
6%
2%
21%
37%
Wall sockets
Bell installation
Labour
The share of the distribution board with its contents has increased here, of course.
This is because the distribution board itself is larger (120 module widths), and the
costs of the remote-control switches and the 24V transformer are included.
Compared to the conventional installation, the installation with remote-control
switches is €1,414.45 more expensive. However, we should not forget that the
flexibility of the installation has increased enormously and such an installation may be
subsequently converted into an installation with an integrated home system with star
topology.
The lighting item is somewhat more expensive than with the conventional installation.
This is because all cabling runs directly to the distribution board. More cable is thus
needed.
For the installation with remote-control switches, work time is saved when laying the
cabling. However, this time saving is largely cancelled out by the additional work in
connecting the remote-control switches.
5.3. Installation with integrated home system with star topology
The set-up of this type of installation is very similar to an installation with remote-
control switches. Here, too, all cabling is brought to the distribution board and the
same type of cables are used. In this case, however, no remote-control switches are
put in the distribution board, rather input modules, output modules, a supply and a
control panel.
For this form of installation, we chose the IHC (intelligent home control) system of
Schneider Electric. As this make also has double and quadruple push buttons
available, we also used these, and the wall sockets are from the same Freeline
range. For the dimmers, we used the Unica wireless dimmers of Schneider Electric.
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These can be controlled by the control panel, which is fitted as standard with an RF
transmitter/receiver.
The system is programmed using Freedom Software. For this, we added one more
working day. For the operation, we also added an RF manual remote control to
enhance comfort.
We do not need any additional push buttons for implementing group functions in this
system. It is, after all, possible to perform a number of independent functions with the
same push button, depending on the time when it is pressed. A function such as “all
off” can be easily programmed for a push button at the front door and at the garage
door. A short press on the push button will operate the lighting of the room
concerned, a long press on the push button (for example two seconds) will activate
the ‘all off’ function. Furthermore, there are also buttons on the remote control for
group functions. Time-related controls can also be implemented as standard.
network
€609.79
Labour €3,840.00
Total €12,417.60
When we compare the price of this installation with an integrated home system in star
topology to the total budget of €275,000, this installation represents 4.5154%. We
can round this to 4.5%.
The different items in the electrical installation represent a percentage of the total
Installation with integrated home system with star topology
12%
16%
0%
0%
2%
5%
2%
32%
31%
Wall sockets
Bell installation
Labour
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The share of the distribution board with content has again increased here. This is
because the distribution board itself is large (144 module widths). It includes the price
of the IHC modules, of course. The cost of the distribution board with its contents is
around the same as the labour costs here.
Compared to the conventional installation, the installation with integrated home
system with star topology is €4,175.99. Compared to the installation with remote-
control switches, the difference is €2,761.54.
The lighting item is somewhat more expensive because the double and quadruple
push buttons are more expensive. One working day has also been included for the
programming.
5.4. Installation with integrated home system with bus
For this installation, we used the Nikobus system from Niko. This installation is of the
semi-centralised type. This means that a number of control panels are used that have
a number of direct outputs. These modules are placed in the distribution board. The
lighting circuits to be controlled are connected directly to them. There is, however,
also bus cabling (in this case two-wire) that connects the various control panels to
one another. This bus cabling also runs to every operating point where one or more
bus push buttons can be installed. These bus push buttons are not the ordinary NO
variety. Electronics are incorporated into them and they have a unique address. Of
course, such push buttons are more expensive than conventional push buttons.
We have a few more bus push buttons here for performing group functions. With this
system, it is not possible to activate a different function with a short or long press. In
the sitting room, there is a bus push button with IR receiver and an IR manual remote
control. The dimmers are of the modular type (fitted in the distribution board) and are
controlled by a dimmer module with four 0 – 10V outputs. The system is programmed
by software. There are also modules for time-related controls and logical functions.
network
€609.79
Labour €3,840.00
Total €13,901.69
When we compare the price of this installation with an integrated home system with a
bus to the total budget of €275,000, this installation represents 5.0551%. We can
round this to 5.1%.
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The different elements of the electrical installation represent a percentage of the total
Installation with integrated home system with bus
11%
22%
0%
0%
2%
4%
2%31%
28%
Wall sockets
Bell installation
Labour
The share of the distribution board with content has increased here again. This is
because the distribution board itself is larger (168 module widths). Of course, the
Nikobus modules also have their cost. The cost of the distribution board with its
contents is even greater than the labour costs here.
Compared to the conventional installation, the installation with integrated home
system with a bus is €5,660.08 more expensive. Compared to the installation with
remote-control switches, the difference is €4,245.63. Compared to the installation
with integrated home system with star topology, the difference is €1,484.09.
The lighting item is more expensive because the bus push buttons are more costly.
One additional working day has also been counted for the programming (compared
to the conventional installation).
5.5. The differences one by one
The above calculations apply to the “basic” installation for this actual home. The word
“basic” has to be qualified. This installation contains more than enough wall sockets,
as well as lighting points, operating points, and connections for radio, TV, telephone
and computers. It also contains a PABX telephone exchange.
We have set out the differences between installation techniques in a graph.
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0
500
1000
1500
2000
2500
3000
3500
4000
4500
Conventional Remote switches IHS star IHS bus
Wall sockets
Bell installation
Labour
We can see that, for all installation techniques, the labour costs take up a sizeable
chunk of the budget. As a percentage, however, this item is reduced when we use
more intelligent systems. For the lighting installation we see the costs rise when we
use more intelligent systems. The same applies to the distribution board with its
contents.
Below, we can see the total cost in euros and the percentage of the total budget for
the different forms of installation.
Conventional
installation
€8,241.62 3%
Remote-control
switches
€9,656.06 3.5%
IHS in star topology €12,417.60 4.5%
IHS with bus €13,901.69 5.1%
In the installations with IHS, we used a few basic functions and materials. It will be
clear that if touch-screens, audio controls and so on are to be installed in the IHS
system, the percentage of the total budget will rise. Once again, we would like to
point out here that in practice, the prices will probably be lower. As the labour costs
can differ considerably from country to country and from region to region, and this
item accounts for a substantial share of the price of the installation, differences can
arise.
We can also set out the total price per installation form against the area of the home.
We then come to a basic price of 33.92 €/m² to 57.21 €/m².
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Conventional
installation
33.92 €/m²
Remote-control
switches
39.74 €/m²
IHS in star topology 51.10 €/m²
IHS with bus 57.21 €/m²
6. The options
In addition to the “basic” installation, we can also select a few options.
6.1. Ventilators
In order to extract odours from the bathroom or toilet, we can fit a ventilator in them.
There are two toilets and two bathrooms, thus requiring four bathroom ventilators.
For the conventional installation, and the installation with remote-control switches, in
the two toilets and the two bathrooms we can fit a time switch of up to 15 minutes.
For the IHS installations, we do not need to fit any additional push buttons. After all,
we can programme it such that the ventilator must run for a few minutes when the
lighting goes on or off.
The prices below are calculated for the installation (including labour) of four
ventilators in the home (including ventilators). For the installation with remote-control
switches, the installation is implemented as with a conventional installation.
All ventilators Per unit
Conventional
installation
€595.70 €148.93
Remote-control
switches
€595.70 €148.93
IHS in star topology €486.67 €121.67
IHS with bus €598.55 €149.64
We see here that the IHS system is cheaper in star topology. The additional outputs
of this system are cheaper than the additional outputs of the IHS system with bus.
For the two IHS systems, we do not need additional timers. The timer functions are
already incorporated as standard into the control panels.
6.2. Electric garage door
For the electrically-driven garage door, we have only indicated the price for the
installation (including labour) of the cables, push buttons and additional inputs and
outputs for the IHS systems. The price of the garage door motor is not included
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because it is highly dependent on the motor used and the type and weight of the
door. The garage door motor is generally fitted by the company that supplies the
door.
Conventional
installation
€161.60
Remote-control
switches
€161.60
IHS in star topology €169.59
IHS with bus €292.34
6.3. Roll-down shutters
The following prices are for the installation (including labour) of the cables, push
buttons and additional inputs and outputs for the IHS systems. In this home, we have
fitted 13 roll-down shutters. As the windows have different dimensions, we used a
medium-strength roller shutter motor (35 NM). For the installation with remote-control
switches, the installation is implemented as with a conventional installation.
All roll-down
shutters
Average per unit
Conventional
installation
€2,556.66 €196.67
Remote-control
switches
€2,556.66 €196.67
IHS in star topology €2,999.35 €230.72
IHS with bus €4,034.86 €310.37
6.4. Door phone
In the basic installation, we already included eight telephone connections for
telephony and a PABX telephone exchange by Bticino. We can also connect the
outdoor unit of the door phone to the same telephone exchange. In this way, the two-
wire telephones can be used as a telephone, but they can also answer calls at the
door and operate the electric door lock.
The price below includes the outdoor unit, the door lock, some additional cabling and
labour. We have deducted the price of the bell installation (see basic installation)
from it.
Conventional
installation
€301.97
Remote-control
switches
€301.97
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6.5. Videophone
In the basic installation, we already included eight telephone connections for
telephony and a PABX telephone exchange by Bticino. Now, we will connect a video
distributor to the telephone exchange. An outdoor video unit with colour camera and
two indoor units with colour monitors are connected to the video distributor. We can
now see who is at the door at two places in the home. Also, using the ordinary two-
wire telephones, we can answer the door and unlock it.
The price below includes the outdoor unit with colour camera, the door lock, some
additional cabling, the two indoor units with colour monitors and labour. We have
deducted the price of the bell installation (see basic installation) from it.
Conventional
installation
€1,906.57
Remote-control
switches
€1,906.57
IHS in star topology €1,906.57
IHS with bus €1,906.57
6.6. Smoke detectors
In order to increase fire protection, we now fit ten smoke detectors in the home. We
have a choice here from the entire range of products, from cheap to very expensive.
Generally, the cheaper products are battery-powered. Every couple of years, the
battery will be used up. Then, the smoke alarm will give a few loud audio signals to
draw attention to the fact that the battery has to be replaced. This sometimes
happens at night, which of course is very annoying, certainly when there are a
number of smoke alarms in the home. These signals can also be issued when
nobody is home (during the holiday period, for example). You will not then hear the
signals and may think the smoke alarm is still working when in fact it is not.
We have thus chosen a more expensive, but more comfortable and safer solution.
We will thus use smoke detectors with a 230V supply. During a power cut, a backup
battery ensures protection. We have also chosen smoke detectors that can be
connected together. The advantage of this is that all connected smoke detectors will
issue an alarm when one detects smoke. The entire home is alarmed. For the
installations with an IHS system, we have also provided an additional relay whose
contact closes when there is a smoke alarm. This contact is passed on to the IHS
system so that certain lighting can come on at that time (for a quick evacuation) for
example, when the gas pipe is shut off, and the outdoor lighting can flash to indicate
to the neighbourhood that there is a problem. If desired, in combination with an
interface, alarm text messages or e-mails can also be sent by this relay.
The prices below include the gross price of the Merten Argus Connect 230 V smoke
alarm, the cabling and labour. The additional price for the IHS installation methods is
due to the additional relay.
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Ten smoke
detectors
Average per unit
Conventional
installation
€1,617.52 €161.75
Remote-control
switches
€1,617.52 €161.75
IHS in star topology €1,701.42 €170.14
IHS with bus €1,701.42 €170.14
6.7. Overvoltage protection
In order to protect the electrical installation in the home and the electrical equipment
against indirect lightning strike or overvoltages on the mains, we can provide
overvoltage protection. We not only place it on the 230V mains, but also on the
supply cable for the telephony and the coax. Indeed, overvoltage protection only
works properly when all cables entering the home are protected. Below, we provide
the costs of overvoltage protection for a single-phase home connection, telephone,
coax and labour.
Conventional
installation
€314.82
Remote-control
switches
€314.82
As overvoltage protection has to be fitted right at the start of the installation, there is
no price difference between the different installation methods.
19

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20
7. Conclusion
We have calculated the cost of an electrical installation for an actual single-family
home. In doing so, we established that a conventional electrical installation
represents around 3% of the total construction budget. For an installation with
remote-control switches, this is 3.5%. Installations with an integrated home system in
star topology or with a bus represent 4.5% and 5.1% of the total budget respectively.
We also did a price calculation for the options of ventilators, electric garage doors,
roll-down shutters, door phones, videophones, smoke detectors and overvoltage
protection. In this way, a budget can be drawn up for the electrical installation that
includes certain options adapted to the specific requirements of the end users.
We would again like to point out that the above price calculations are indicative. The
use of luxury ranges of switches will of course yield a different price to the use of
standard switches. The prices of materials and labour can also differ per country or
even per region (countryside and city).
In order to achieve a good electrical installation that fully satisfies your desires and
expectations, it is important to provide a budget for this installation right from the start
of the building plans. After all, the electrical installation is one of the fundamental
elements of a home. A fully-fitted luxury kitchen can, on the other hand, be
implemented at a later stage.

What does a home electrical installation cost?

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