Real Estate APIs for Smarter Property Decisions

The HomeSage real estate APIs are a suite of production endpoints that turn property intelligence into a single API call. Spanning 150M+ US properties with daily refreshes, they cover everything from address autocomplete and property data to flip ROI, rental analysis, skip tracing and market forecasts — so you can build real-estate-aware software without stitching together five separate vendors.

Across five categories — Property Data, Investment, Analysis, Skip Tracing and Utility — the real estate APIs return listing details and AVM valuations, comparable sales, flip and rental ROI, AI renovation cost estimates, property condition from photos, verified owner contact details, mortgage and lien records, solar and roof potential, and ZIP-level market outlooks.

Pricing is credit-based and charged per call. Costs range from free (Address Autocomplete) up to 15 credits for the all-in-one Full Property Report, with most single-property endpoints between 1 and 5 credits. Credits are included with HomeSage subscription plans and scale with your tier, so you only pay for the real estate API calls you actually make.

Create an account, generate an API key in the developer dashboard at developers.homesage.ai, and authenticate each request with a Bearer token. Every endpoint ships with copy-paste cURL, JavaScript and Python examples, so most teams make their first real estate API call in minutes.

Yes. The Flip Return Analysis endpoint returns the After-Repair Value (ARV), projected profit, ROI percentage, maximum recommended renovation budget and estimated hold time for any address — the full flip math in one call, with no spreadsheets required.

They do. The skip-tracing endpoints return verified owner names, mailing addresses, phone numbers and emails, plus associated people such as relatives and business partners. Bulk variants process up to 100 properties per call, making the real estate APIs a fit for direct-mail and outreach campaigns at scale.

Developers, proptech founders, lenders and institutional investors build on the real estate APIs to power valuation tools, lead-generation products, underwriting workflows and deal-sourcing platforms. Agents, wholesalers and house flippers use the same underlying data through HomeSage's own products.

HomeSage analyzes 150M+ US properties with daily data refreshes, blending MLS feeds, public records and proprietary AI models. Valuation and listing endpoints reflect the latest available data, and heavier lookups such as Mortgage & Lien Analysis are cached free for seven days to keep your real estate API costs down.