CoStar alternatives

3 tools to consider instead of CoStar, shown against it.

CoStar Reonomy ATTOM HouseCanary
Vendor CoStar Group, Inc. Altus Group (Reonomy) ATTOM Data Solutions, LLC HouseCanary, Inc.
Pricing model Quote only Subscription Quote only Subscription
Free tier No No No No
Deployment Cloud Cloud Cloud Cloud
Open source No No No No
Best for Commercial real estate brokers, appraisers and investors needing verified comp and market-trend data. CRE brokers, lenders and investors sourcing off-market deals and researching property ownership. Proptech, mortgage and insurance companies needing bulk, standardized nationwide property records to build on. Agents, appraisers, lenders and SFR investors needing on-demand residential valuation and forecasting data.
Pricing

Subscription licensing by market coverage and seats; not published.

Pricing has not been verified yet — see the vendor's site.

Self-serve Monthly and Annual subscription plans (annual said to save ~30%), plus quote-based Bulk Data Feeds and API access.

Annual From $400/month, billed annually
Monthly No price published
Bulk Data Feeds / API Custom, contact sales

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Data licensing by dataset, geography and delivery method; not published.

Pricing has not been verified yet — see the vendor's site.

Tiered self-serve plans billed monthly or annually, plus usage-based API pricing and custom Enterprise plans.

Basic $19/month or $190/year
Pro $79/month or $790/year
Teams $199/month or $1,990/year
Enterprise Custom, contact sales

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Features
  • Verified commercial property, lease and sale comp data
  • Market rent, vacancy and absorption trend analytics
  • Investment underwriting and property valuation tools
  • Ownership and tenant research
  • Apartments.com and LoopNet marketplace data integration
  • Custom market reports and benchmarking
  • Commercial property ownership resolution, including LLCs/shell companies
  • Off-market deal sourcing and prospecting
  • Transaction history and occupant data
  • Predictive scoring for likelihood of sale
  • Bulk CSV data feeds
  • API access for property and ownership data
  • Nationwide property tax, deed and mortgage records
  • Foreclosure and distressed-property data
  • Automated valuation model (AVM) data feeds
  • Neighborhood and demographic data
  • Bulk file, API and cloud-marketplace data delivery
  • Standardized property data model across counties
  • Automated valuation models (AVMs) for residential properties
  • Rental estimates and home price forecasting
  • CanaryAI conversational property research assistant
  • Property Analytics API for programmatic access
  • Portfolio monitoring for multi-property tracking
  • Market and comp reports for agents and appraisers

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