CoStar Group

American technology company
Organization business Q16988748
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Financials

Self-reported XBRL data from 17 annual filings
Revenue
$3.25B
▲ 18.7% YoY FY2025
Net Income
$6.50M
▼ 95.3% YoY FY2025
Assets
$10.54B
▲ 13.8% YoY FY2025
EPS (diluted)
$0.02
▼ 94.1% YoY FY2025
$0.00$892.93M$1.79B$2.68B$3.57B FY2009: $209.66M · NI $18.69M (8.9% margin)FY2010: $226.26M · NI $13.29M (5.9% margin)FY2011: $251.74M · NI $14.66M (5.8% margin)FY2012: $349.94M · NI $9.91M (2.8% margin)FY2013: $440.94M · NI $29.73M (6.7% margin)FY2014: $575.94M · NI $44.87M (7.8% margin)FY2015: $711.76M · NI -$3.46M (-0.5% margin)FY2016: $837.63M · NI $85.07M (10.2% margin)FY2017: $965.23M · NI $122.69M (12.7% margin)FY2018: $1.19B · NI $238.33M (20.0% margin)FY2019: $1.40B · NI $314.96M (22.5% margin)FY2020: $1.66B · NI $227.13M (13.7% margin)FY2021: $1.94B · NI $292.60M (15.1% margin)FY2022: $2.18B · NI $369.50M (16.9% margin)FY2023: $2.46B · NI $375.00M (15.3% margin)FY2024: $2.74B · NI $139.00M (5.1% margin)FY2025: $3.25B · NI $6.50M (0.2% margin) '09'11'13'15'17'19'21'23'25
■ Revenue ■ Net Income
Source: SEC EDGAR · latest 10-K filed 2025-12-31 · accession 0001057352-26-000020

Summary

CoStar Group is a business[1]. It ranks in the top 3% of business entities by monthly Wikipedia readership (3,178 views/month).[2]

Key Facts

  • CoStar Group is in the country of United States[3].
  • CoStar Group is in the country of US[4].
  • CoStar Group's instance of is recorded as business[5].
  • CoStar Group's instance of is recorded as public company[6].
  • CoStar Group's founder is recorded as Andy Florance[7].
  • CoStar Group is owned by Andy Florance[8].
  • CoStar Group's headquarters location is recorded as Arlington County[9].
  • CoStar Group's chief executive officer is recorded as Andy Florance[10].
  • CoStar Group's child organization or unit is recorded as LoopNet[11].
  • CoStar Group's child organization or unit is recorded as STR, Inc.[12].
  • CoStar Group's child organization or unit is recorded as Apartments.com[13].
  • CoStar Group's child organization or unit is recorded as Homes.com[14].
  • CoStar Group's child organization or unit is recorded as OnTheMarket[15].
  • CoStar Group's child organization or unit is recorded as Domain Group[16].
  • CoStar Group's child organization or unit is recorded as Zonda Home[17].
  • CoStar Group is part of S&P 500[18].
  • CoStar Group's stock exchange is recorded as Nasdaq[19].
  • CoStar Group's review score is recorded as 2.9 / 5[20].
  • CoStar Group's industry is recorded as information technology[21].
  • CoStar Group's industry is recorded as real estate industry[22].
  • CoStar Group's industry is recorded as residential property[23].
  • CoStar Group's industry is recorded as commercial property[24].
  • 1987 marks the founding of CoStar Group[25].
  • 1998-02-02 marks the founding of CoStar Group[26].
  • CoStar Group's official website is recorded as http://www.costargroup.com/[27].

Body

Founding

CoStar Group's founder is recorded as Andy Florance[7]. Recorded inception include 1987[25] and 1998-02-02[26].

Identity

CoStar Group's official name is recorded as it, Inc.[28]. It is part of S&P 500[18].

Leadership

CoStar Group's chief executive officer is recorded as Andy Florance[10].

Operations

CoStar Group's headquarters location is recorded as Arlington County[9]. Subsidiaries include LoopNet[11], a business[29], in United States[30], founded in 1995[31], headquartered in San Francisco[32]; STR, Inc.[12], a business[33], in United States[34], founded in 1985[35], headquartered in Hendersonville[36]; Apartments.com[13], a business[37], in United States[38], founded in 1997[39], headquartered in Arlington County[40]; Homes.com[14], a business[41], in United States[42], headquartered in Norfolk, Virginia[43]; OnTheMarket[15], a business[44], in GB[45], founded in 2017[46], headquartered in London[47]; and Domain Group[16], a business[48], in Australia[49], founded in 1999[50], headquartered in Sydney[51].

Industry

Industries include information technology[21], real estate industry[22], residential property[23], and commercial property[24].

Ownership

CoStar Group is owned by Andy Florance[8]. Its stock exchange is recorded as Nasdaq[19].

Why It Matters

CoStar Group ranks in the top 3% of business entities by monthly Wikipedia readership (3,178 views/month).[2] It has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[52] It is known by 9 alternative names across languages and contexts.[53]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.
  26. [28] ↑ . wikidata.org.

Inline context (facts about related entities)

  1. [29] ↑ . Wikidata. wikidata.org. → on this site
  2. [30] ↑ . Wikidata. wikidata.org. → on this site
  3. [31] ↑ . Wikidata. wikidata.org. → on this site
  4. [32] ↑ . Wikidata. wikidata.org. → on this site
  5. [33] ↑ . Wikidata. wikidata.org. → on this site
  6. [34] ↑ . Wikidata. wikidata.org. → on this site
  7. [35] ↑ . Wikidata. wikidata.org. → on this site
  8. [36] ↑ . Wikidata. wikidata.org. → on this site
  9. [37] ↑ . Wikidata. wikidata.org. → on this site
  10. [38] ↑ . Wikidata. wikidata.org. → on this site
  11. [39] ↑ . Wikidata. wikidata.org. → on this site
  12. [40] ↑ . Wikidata. wikidata.org. → on this site
  13. [41] ↑ . Wikidata. wikidata.org. → on this site
  14. [42] ↑ . Wikidata. wikidata.org. → on this site
  15. [43] ↑ . Wikidata. wikidata.org. → on this site
  16. [44] ↑ . Wikidata. wikidata.org. → on this site
  17. [45] ↑ . Wikidata. wikidata.org. → on this site
  18. [46] ↑ . Wikidata. wikidata.org. → on this site
  19. [47] ↑ . Wikidata. wikidata.org. → on this site
  20. [48] ↑ . Wikidata. wikidata.org. → on this site
  21. [49] ↑ . Wikidata. wikidata.org. → on this site
  22. [50] ↑ . Wikidata. wikidata.org. → on this site
  23. [51] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [52] ↑ . Wikidata sitelinks. wikidata.org.
  3. [53] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). CoStar Group. Retrieved October 11, 2026, from https://4ort.xyz/entity/costar-group
MLA “CoStar Group.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Oct. 2026, https://4ort.xyz/entity/costar-group.
BibTeX @misc{4ortxyz_costar-group_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{CoStar Group}}, year = {2026}, url = {https://4ort.xyz/entity/costar-group}, note = {Accessed: 2026-10-11}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): CoStar Group — https://4ort.xyz/entity/costar-group (retrieved 2026-10-11)

Canonical URL: https://4ort.xyz/entity/costar-group · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 5w ago · IdeasMagnet · 2026-09-05 view diff on Wikidata ↗
    Openstreetmap way id → 225274675
    "/* wbsetclaim-create:2||1 */ Openstreetmap way id: 225274675, Adding OSM way id claim from wikidata tag on way/225274675 in United States"
  2. 5w ago · ~2026-47810-90 · 2026-09-03 view diff on Wikidata ↗
    Child organization or unit → LoopNet, STR, Inc., Apartments.com +4
    "/* wbsetclaim-create:2||1 */ Child organization or unit: Zonda Home"
  3. 7w ago · Trivialist · 2026-08-22 view diff on Wikidata ↗
    P14750 → D7FC-ABA6-0040-531F-DEB3
    "/* wbcreateclaim-create:1| */ P14750: D7FC-ABA6-0040-531F-DEB3, [[:toollabs:quickstatements/#/batch/269256|batch #269256]]"
  4. 11w ago · Maxim75 · 2026-07-21 view diff on Wikidata ↗
    Delaware division of corporations file number → 2854191
    Domain name → costargroup.com
    Cage code → 1PMX8, 6KUB9
    Contact page url → https://www.costargroup.com/contact
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1|1 */ Child organization or unit: Domain Group"
  5. 21w ago · Dcflyer · 2026-05-14 view diff on Wikidata ↗
    Sam id → HMJLN75ES426
    Logo image → CoStar Group logo.svg
    Wikidata description → American technology company
    "/* wbsetclaim-create:1||1 */ Sam id: HMJLN75ES426, Matched to [[:toollabs:mix-n-match/#/entry/229498710|Costar Realty Information, Inc. (#229498710)]] in [[:toollabs:mix-n-match/#/catalog/"
  6. 22w ago · TheImaCow · 2026-05-05 view diff on Wikidata ↗
    Wolfram language entity code → Entity["Company", "CoStarGroup::v54kz"]
    Founder → Andy Florance
    Crunchbase organization id → —
    Headquarters location → Washington, D.C., Arlington County
    + 104 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ Logo image: CoStar_Group_logo.svg"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.