aid: costar name: CoStar Group url: https://raw.githubusercontent.com/api-evangelist/costar/refs/heads/main/apis.yml description: >- CoStar Group is the dominant commercial and residential real estate data, analytics, and marketplace company. The portfolio spans the flagship CoStar commercial real estate intelligence platform, LoopNet (CRE marketplace), Apartments.com network (residential rentals, including ForRent.com and Westside Rentals), Homes.com and Homesnap (for-sale residential), Ten-X (online CRE auctions), BizBuySell (business-for-sale marketplace), STR (hotel data), Visual Lease (lease management), Matterport (3D spatial capture), and international properties including OnTheMarket (UK), Emporis (Germany), and a controlling stake in Domain Group (Australia). Distribution to partners is via enterprise data licensing, syndication feeds, and brand-specific marketplace tooling rather than a public self-serve developer portal. kind: company image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg tags: - Commercial Real Estate - Residential Real Estate - Real Estate Data - Marketplaces - Analytics - Listings - PropTech created: '2026-05-23' modified: '2026-05-23' specificationVersion: '0.19' apis: - aid: costar:costar name: CoStar Commercial Real Estate Platform description: >- CoStar's flagship commercial real estate information platform covering property, tenant, lease, sale, and market analytics across office, industrial, retail, multifamily, and specialty CRE asset classes. Data is licensed to enterprise customers and partners under contract. humanURL: https://www.costar.com baseURL: https://www.costar.com tags: - Commercial Real Estate - Analytics - Property Data properties: - type: Documentation url: https://www.costar.com - aid: costar:loopnet name: LoopNet description: >- The largest commercial real estate marketplace in the United States, surfacing CRE listings for sale and lease alongside CoStar-sourced analytics. humanURL: https://www.loopnet.com baseURL: https://www.loopnet.com tags: - Commercial Real Estate - Marketplace - Listings properties: - type: Documentation url: https://www.loopnet.com - aid: costar:apartments-com name: Apartments.com Network description: >- Residential rental marketplace network including Apartments.com, ForRent.com, and Westside Rentals, providing listings, leads, and advertising to multifamily owners and managers. humanURL: https://www.apartments.com baseURL: https://www.apartments.com tags: - Residential Rentals - Multifamily - Marketplace properties: - type: Documentation url: https://www.apartments.com - aid: costar:homes-com name: Homes.com description: >- Residential for-sale and rental marketplace operating agent-first branding and search, paired with the Homesnap mobile and agent tooling. humanURL: https://www.homes.com baseURL: https://www.homes.com tags: - Residential Real Estate - For Sale - Marketplace properties: - type: Documentation url: https://www.homes.com - aid: costar:homesnap name: Homesnap description: >- Mobile residential real estate search and agent productivity application that integrates with MLSs and Homes.com. humanURL: https://www.homesnap.com baseURL: https://www.homesnap.com tags: - Residential Real Estate - Mobile - MLS properties: - type: Documentation url: https://www.homesnap.com - aid: costar:ten-x name: Ten-X description: >- Online commercial real estate transaction and auction platform for buyers and sellers of CRE assets. humanURL: https://www.ten-x.com baseURL: https://www.ten-x.com tags: - Commercial Real Estate - Auctions - Transactions properties: - type: Documentation url: https://www.ten-x.com - aid: costar:bizbuysell name: BizBuySell description: >- Online marketplace for buying and selling small and mid-sized businesses, with broker tools and financing partners. humanURL: https://www.bizbuysell.com baseURL: https://www.bizbuysell.com tags: - Business For Sale - Marketplace - SMB properties: - type: Documentation url: https://www.bizbuysell.com - aid: costar:str name: STR (Smith Travel Research) description: >- Hotel benchmarking, performance data, and analytics provider serving the global lodging industry. humanURL: https://str.com baseURL: https://str.com tags: - Hospitality - Hotel Data - Benchmarking properties: - type: Documentation url: https://str.com - aid: costar:visual-lease name: Visual Lease description: >- Lease management and lease accounting platform for corporate and real estate tenants. humanURL: https://visuallease.com baseURL: https://visuallease.com tags: - Lease Management - Lease Accounting - Corporate Real Estate properties: - type: Documentation url: https://visuallease.com - aid: costar:matterport name: Matterport description: >- 3D spatial data capture platform used to digitise real estate, retail, and built-environment spaces, integrated across CoStar's marketplaces. humanURL: https://matterport.com baseURL: https://matterport.com tags: - 3D Capture - Spatial Data - PropTech properties: - type: Documentation url: https://matterport.com - aid: costar:onthemarket name: OnTheMarket description: >- UK residential property portal acquired by CoStar Group, providing for sale and to let listings with agent tooling. humanURL: https://www.onthemarket.com baseURL: https://www.onthemarket.com tags: - Residential Real Estate - United Kingdom - Marketplace properties: - type: Documentation url: https://www.onthemarket.com - aid: costar:emporis name: Emporis description: >- Global building data and imagery provider covering high-rise and commercial structures. humanURL: https://www.emporis.com baseURL: https://www.emporis.com tags: - Building Data - Imagery - Real Estate properties: - type: Documentation url: https://www.emporis.com - aid: costar:domain-group name: Domain Group description: >- Australian residential real estate marketplace and media company in which CoStar Group acquired a majority stake. humanURL: https://www.domain.com.au baseURL: https://www.domain.com.au tags: - Residential Real Estate - Australia - Marketplace properties: - type: Documentation url: https://www.domain.com.au - aid: costar:lands-of-america name: Land.com / Lands of America description: >- Land-for-sale marketplace network covering rural, ranch, recreational, and development land in the United States. humanURL: https://www.land.com baseURL: https://www.land.com tags: - Land - Marketplace - Rural properties: - type: Documentation url: https://www.land.com common: - type: Website url: https://www.costargroup.com - type: CoStar url: https://www.costar.com - type: Investors url: https://www.costargroup.com/investors - type: News url: https://www.costargroup.com/news - type: LinkedIn url: https://www.linkedin.com/company/costar-group/ maintainers: - FN: Kin Lane email: kin@apievangelist.com