1. HEADQUARTERS TRANSITION

2. CREATING SOME CONTEXT Where we have been Tough economy Layoffs avoided Pay freeze

3. CREATING SOME CONTEXT Where we are Turning the corner Facing new opportunities Pay freeze lifted

4. CREATING SOME CONTEXT “We’ve faced lots of challenges and changes. Why take on more change now?” Opportunities arrive when they arrive (and they don’t wait) We got to where we are today by taking risks and seizing opportunities

5. OUR OPPORTUNITY The story of our new building The economics of our deal 40 cents on the dollar Virtually brand new facility Large enough to meet our needs Positions us for growth, synergy and economies of scale

6. OUR OPPORTUNITY Great location Blocks from the capital On the doorstep to the largest theater district outside of Broadway A showplace we can be proud of. Centralized, expanded, enhanced training and conferencing resources. A center of education for clients and employees. Tiered presentation auditorium.

7. OUR OPPORTUNITY Environmentally Responsible Building uses daylight harvesting to create improved lighting fields with more robust user centered lighting. Over 300 thermostats are computer monitored to deliver outstanding comfort in a sustainable, cost effective way. “Eco Corridors” insulate from temperature extremes and create great lines of sight for a more aesthetically appealing environment.

8. OUR OPPORTUNITY Building uses no natural gas Rain water filtered before release into the drain system so no contaminants reach the bay. Air is cleaned of pollutants and particulate to hospital grade or higher – work becomes a healthier place to be. We are also exploring UV filtering to further scrub the air.

9. OUR OPPORTUNITY 80% plus more energy efficient (green and cost savings) Building’s second floor “Town Square” concept brings together all departments in a team oriented setting (also called “GoogleWorld” with Wii consoles, pool tables, on demand video links to other centers (you can talk to your buddies face to face in other CoStar locations over coffee). We see this as a place to begin and end your day.

10. OUR OPPORTUNITY Green Rooftop Terrace – up to 20 degrees cooler in shaded areas. Musical and social event center. No disposables in the new facility – all glass and silverware washed nightly. Real time energy dashboards display company savings and energy efficiency. “5 star touches” – true stall doors. No touch appliances.

11. OUR OPPORTUNITY Safety Considerations Auto air pressurization in stairwells creates a safety zone in emergencies beyond harm’s way.

12. OUR OPPORTUNITY Corporate Citizenship Considerations Community minded – CBE’s Reinvestment in a great community and in our nation’s capital Tax Incentives Situated convenient to airport for customer and employee access

13. OUR OPPORTUNITY Ergonomics Much thought has been given to the work stations. Eye appealing and user friendly lighting Ergonomic Seating Flexible work space configuration BIG screens and multiple screens designed with user comfort and functionality in mind. You will have a chance to see sample work stations at the open house.

14. MAKING THIS CHANGE EASIER Transportation all programs grandfathered Metro Subsidy: Full reimbursement Pay for metro not parking Marc Train Full Reimbursement VRE Full Reimbursement

15. MAKING THIS CHANGE EASIER Bus Full Reimbursement Circulator Full Reimbursement Parking Covered parking on site for carpoolers of three or more on first come first serve basis. Also negotiating rates with local garages and will provide more information as it becomes available.

16. MAKING THIS CHANGE EASIER Commuter Connections Rideshare coordinators for DC MD VA car/van pools Database of 30,000 names Guaranteed 4 rides per year for emergency situations CoStar will go above and beyond that to provide emergency transportation if needed. Master bill account with cab company coordinated through concierge 4 rides a year beyond commuter connections

17. MAKING THIS CHANGE EASIER Segways 6 segways & Helmets available for employees Bicycles 20 trek commuter bikes Bike Lockers at Union Station Car pooling assistance “Instant Carpooling” (aka Slug your way to work) via www.sluglines.com

18. MAKING THIS CHANGE EASIER VA DOT provides safe convenient and free park and ride parking lots where you can meet your carpool and one third of these lots also have bus and rail service nearby. Learn more at www.vamegaprojects.com

19. MAKING THIS CHANGE EASIER Relocation Program Employees relocating their permanent residence to the District of Columbia between 2/5/10 and 9/30/11 will receive $7,000 in relocation assistance ($3,000 upon move and $1,000 per quarter for the following 4 quarters) First Mover Incentive The first 50 employees to move their permanent residence to DC will receive: Full $7,000 payment upon move of permanent residence Additional $7,000 nine months after move of permanent residence

20. MAKING THIS CHANGE EASIER First-Time Homebuyer Individual Income Tax Credit This federal tax credit is available to first-time homebuyers in the District of Columbia. The credit is the smaller of: $5,000, if single, married filing jointly, head-of-household, or qualifying widow(er) ($2,500, if married filing separately) or the purchase price of the home. In general, you may claim the credit if: You purchased a main house during the tax year in the District of Columbia, and You (and your spouse, if married) did not own any other main home in the District of Columbia during the 1-year period ending on the date of purchase. Income restrictions and other qualifications may apply.

21. WHY WE MIGHT LIKE THIS CHANGE…

22. WHY WE MIGHT LIKE THIS CHANGE… Environmentally Responsible – LEED Certification LEED (Leadership in Energy & Environmental Design) is an internationally recognized green building certification system, providing third-party verification that a building or community was designed and built using strategies aimed at improving performance across all the metrics that matter most: energy savings, water efficiency, CO2 emissions reduction, improved indoor environmental quality, and stewardship of resources and sensitivity to their impacts.

23. WHY WE MIGHT LIKE THIS CHANGE… Why does LEED Certification matter? LEED Certification tells our peers, clients and customers, that our building's sustainable features have been verified by a third party to promote energy conservation, to ensure a healthier indoor environment and to reduce our building’s impact on the environment.

24. WHY WE MIGHT LIKE THIS CHANGE… LEED Scoring System In LEED 2009 there are 100 possible base points plus an additional 6 points for Innovation in Design and 4 points for Regional Priority. Buildings can qualify for four levels of certification: Certified - 40 - 49 points Silver - 50 - 59 points Gold - 60 - 79 points Platinum - 80 points and above We purchased a Gold LEED Certified building and we are building out at the Platinum level.

25. WELCOME TO L STREET

26. WHY WE MIGHT LIKE THIS CHANGE… Quality of life cultural and social opportunities Nation’s Capital Vast array of activities Restaurants Clubs Theaters

27. WHY WE MIGHT LIKE THIS CHANGE… Lifestyle Housing Broad array of housingoptions to fit almost every budget. We will provide local realtor assistance, area tours and guidance to help you find your new home. Educational Guidance In addition to support provided by the Employee Assistance Plan we will be providing Educational Consultants to provide individualized guidance to help each family best address the educational needs of their children, including those with special needs.

28. WHY WE MIGHT LIKE THIS CHANGE… Lifestyle Daycare In addition to support provided by the Employee Assistance Plan we will be providing Educational Consultants to provide individualized guidance to help each family best address the daycare needs of their children, including those with special needs On site concierge To assist all employees but especially single parents with some of the logistical challenges that they face.

29. WHY WE MIGHT LIKE THIS CHANGE… Opportunities for growth Employee Education Programs We will be providing programs and speakers in HQ Industry courses and certification We will be giving employees access to world class industry related programs, certificationsand seminars Many future career opportunities Co-location of our company functions provides each employee more opportunities for career growth within more functions across the company

30. WHY WE MIGHT LIKE THIS CHANGE… Other great features of our new building Fitness center access Fitness training and coaching Nutritional Counseling Exercise Classes Healthy foods Better Choices Fruits, healthy food, soda fountain and juices Roof Deck Lunch parties etc Flex Time Program

31. WHY WE MIGHT LIKE THIS CHANGE… Other great features of our new building Circulator bus runs continuously from Union Station directly by our office and back all day. (We have provided circulator routes). These are brand new, clean busses that can take you to work or for a quick ride to Georgetown for lunch. Smart Bikes Racks (just like in Paris) rent a bike for a dollar and drop off at any other location. Segways available for employee use upon request. They are not just for tourist groups any more!

32. Verizon Center Box 220 events per year See your market’s team play the Caps & Wizards Participate in client entertainment See your favorite band 4,000+ tickets for CoStar!

33. HOW DO WE LEARN MORE CINDI Open house Website Ask questions through DCMove@costar.com

34. 1331 L Street Open HouseWednesday, July 7th Tour the new building Enjoy a “Taste of DC” for lunch Hang out on the rooftop terrace and listen to music Sightsee in DC Top off the day with a Nationals Game Buses will return to White Marsh throughout the day, stay as long as you like!

35. DC MOVE INFO ON CINDI Check CINDI for links toDC MOVE related content.

36. WEBSITE COMING SOON All the information you’ll need to make your transition to L street as smooth as possible. You’ll be notified shortly of the website launch via email.