When was CoStar Group founded?

CoStar Group was founded in 1987.

Where is CoStar Group located?

CoStar Group is headquartered in Washington, DC, United States.

Who is the current CEO of CoStar Group?

Andrew C Florance of CoStar Group. They have also founded 1 company.

How many employees does CoStar Group have?

As of Aug 31, 2026, the latest employee count at CoStar Group is 12667.

What is the annual revenue of CoStar Group?

Annual revenue of CoStar Group is more than $1B as on Dec 31, 2025

Where does CoStar Group rank among its competitors?

CoStar Group ranks 9th amongst 903 active competitors, of which 61 are funded. It stands 10th in terms of total funding among its competitors. The most recent competitor to raise funding was Square Yards, which secured $95.1M in Jun, 2026.

Who are the top competitors of CoStar Group?

CoStar Group's top competitors include Zillow, Redfin and Square Yards. Among them, Square Yards secured the most recent funding round in June, 2026.

CoStar Group - 2026 Company Profile, Team, Funding, Competitors & Financials

Company Details

CoStar Group, is a parent company of brands like LoopNet, Apartments.com, apartmentfinder.com, LandsofAmerica, BizBuySell, and others. The company through their subsidiaries provides information, marketplaces, SaaS, analytics and marketing services to the multifamily and commercial real estate industry. In 2022, the company recorded annual revenues of $2.25B and a net profit of $0.37B.

Website: costargroup.com
Social

Key Metrics

Founded Year

1987

Location

Washington, DC, United States

Stage

Public

Investors

Western Technology Investment & 1 more

Ranked

9^th among 903 active competitors

Annual Revenue

$1B+ as on Dec 31, 2025

Employee Count

12,667 as on Aug 31, 2026

Investment & Acquisitions

Zonda & 24 more

Similar Companies

Zillow & 3851 more

Exit Details

Public

View CoStar Group's full profile

CoStar Group is associated with 2 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
Costar Group Inc CIN: 1057352 , United States, Active	Feb 01, 1998	$1B+ (As on Dec 31, 2025)	6152 (As on Jan 31, 2024)	-
COSTAR REALTY INFORMATION, INC. CIN: 522134617 , United States, Active	Dec 31, 1999	-	5808 (As on Dec 31, 2024)	-

CoStar Group got listed on Jun 29, 1998.

Click here to take a look at CoStar Group's IPO in detail

CoStar Group is a funded company. CoStar Group has 2 institutional investors.

View details of CoStar Group's funding rounds and investors

The founders of CoStar Group is Andrew C Florance. Andrew C Florance is the CEO of CoStar Group.

Here are the details of CoStar Group's key team members:

Andrew C Florance: Founder & CEO of CoStar Group.

View details of CoStar Group's Founder profiles and Board Members

CoStar Group's employee count trend

CoStar Group has 12,667 employees as of Aug 26. Here is CoStar Group's employee count trend over the years:

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Top competitors of CoStar Group include Zillow, Redfin and Square Yards. Here is the list of Top 10 competitors of CoStar Group, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Zillow 2005, Seattle (United States), Public	Provider of real estate listings, rentals, mortgages, and agent connections	$87M	TCV, Benchmark & 9 others	86/100
2nd	Redfin 2004, Seattle (United States), Acquired	Online property listing and brokerage solution for residential properties	$166M	Glynn Capital, Wellington & 19 others	85/100
3rd	Square Yards 2014, Gurugram (India), Series C	Provider of integrated technology-driven real estate solutions for buying, selling and renting properties	$160M	Bling International Events, Smilegate & 27 others	80/100
4th	Trulia 2005, San Francisco (United States), Acquired	Provider of real estate listings, homes for sale, and housing data	$32.8M	Harvest Growth Capital, RAA Capital & 16 others	79/100
5th	Zoopla 2008, London (United Kingdom), Public	An online listing platform for residential and commercial properties	$10.7M	Atlas Venture, Octopus Ventures & 10 others	78/100
6th	Homes.com 1996, Boca Raton (United States), Acquired	Real Estate Search.	$38.5M	HWVP, Comerica & 3 others	69/100
7th	CREXI 2015, Los Angeles (United States), Series B	Commercial listing platform with listing management tools	$45.3M	TenOneTen, Industry Ventures & 26 others	69/100
8th	LoopNet 1995, San Francisco (United States), Acquired	Provider of commercial real estate listing platform	-	Redpoint Ventures, Saints Capital & 8 others	69/100
9th	CoStar Group 1987, Washington, DC (United States), Public	Parent company of commercial real estate solution provider	-	Western Technology Investment, Founders Equity	69/100
10th	Convex 2017, Richardson (United States), Acquired	Provider of CRM software for construction professionals	$60.2M	Emergence Capital, Fifth Wall & 11 others	68/100

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CoStar Group has not made any investments yet. CoStar Group has made 25 acquisitions.

Here is the list of latest three $acquisitions:

Filter this list

Date of Investment/Acquisition	Type	Company Name	Founded Year	Location
May 29, 2026	Acquisition	Zonda	2020	Costa Mesa (United States)
Aug 04, 2025	Acquisition	Domain Group	1999	Sydney (Australia)
Feb 14, 2025	Acquisition	Ag-Analytics	2018	Ithaca (United States)