Best Real Estate APIs (2026)
Best Real Estate APIs (2026) are ReefAPI category hubs for live JSON: real-estate APIs return property listings, prices, listing details, locations and market inventory. ReefAPI offers 11 non-legal real estate APIs behind one key, one credit pool and the same { ok, data, meta, error } envelope, with examples derived from the catalog and committed live snapshots.
Ranked Real Estate API list
Ranked by catalog action count, then alphabetically for ties; legal-heavy engines are excluded.
| # | Engine | What it returns | Actions | Snapshot sample | Free tier | Landing |
|---|---|---|---|---|---|---|
| 1 | Zillow | listings[]{zpid, url, address, region, postal_code, country, changed_at}, category, window{olde... | 14 | address: 8112 Alophia Dr, Austin, TX 78739; price_display: $665,000 | yes | View API |
| 2 | Realtor.com | results[]{property_id, url, list_price_usd, status, property_type, beds, baths, sqft, lot_sqft,... | 7 | list_price_usd: 329995; city: Austin | yes | View API |
| 3 | Rightmove | matches[] (location_identifier/id/type/display_name), count | 6 | price_display: £600,000 | yes | View API |
| 4 | Japan Real Estate | items[]{listing_id, url, title_ja, address_ja, price_jpy, price_ja, madori, area_m2 (+land_area... | 5 | listing_id: [redacted-phone]; bukken_code: [redacted-phone] | yes | View API |
| 5 | Redfin | items[]{property_id, listing_id, url, address_line, city, state_code, postal_code, list_price_u... | 5 | list_price_usd: 1100000; city: Austin | yes | View API |
| 6 | Hemnet.se | results[]{id, url, street_address, area, housing_form, asking_price{amount_sek}, fee, square_me... | 4 | id: 21698056; url: https://www.hemnet.se/bostad/lagenhet-1rum-sodra-angby-stockholms-kommun-zornvagen-[redact... | yes | View API |
| 7 | Property Snapshot | property{address_normalized,country,source_engine,source_id,listing_url}, match{mode: url|addre... | 4 | property: US; match: url | yes | View API |
| 8 | Funda.nl | results[]{id, url, contract, object_type, price{amount_eur, kind}, surface_m2, rooms, bedrooms,... | 3 | address: Cornelis Vermuydenstraat; price: 525000 | yes | View API |
| 9 | Idealista | results[]{id, url, title, price, currency, rooms, bathrooms, surface_m2, floor, features[], thu... | 3 | title: Piso en Calle de Castelló, Recoletos, Madrid; price: 1490000 | yes | View API |
| 10 | Immobiliare.it | results[]{id, url, price_eur, contract, typology, rooms, bedrooms, bathrooms, surface_m2, floor... | 3 | title: Trilocale via Flaminia, 443, Flaminio, Roma; location: Via Flaminia, 443 | yes | View API |
| 11 | OnTheMarket | matches[]{location_id, name, display_name}, count | 3 | title: 2 bedroom detached house for sale; address: Stonehill Woods Park, Old London Road, Sidcup, Kent, DA14 | yes | View API |
What each Real Estate API covers
Zillow includes 14 actions (new_listings, search, search_by_coordinates). US homes with prices, history and estimates. The primary catalog return is listings[]{zpid, url, address, region, postal_code, country, changed_at}, category, window{olde....
Realtor.com includes 7 actions (search, detail, estimates). Realtor.com The primary catalog return is results[]{property_id, url, list_price_usd, status, property_type, beds, baths, sqft, lot_sqft,....
Rightmove includes 6 actions (location_search, search, property_detail). UK property listings for sale and to rent. The primary catalog return is matches[] (location_identifier/id/type/display_name), count.
Japan Real Estate includes 5 actions (search, detail, areas). Japan property listings and details. The primary catalog return is items[]{listing_id, url, title_ja, address_ja, price_jpy, price_ja, madori, area_m2 (+land_area....
Redfin includes 5 actions (search, listing_detail, similar). US homes for sale, sold and rentals with history. The primary catalog return is items[]{property_id, listing_id, url, address_line, city, state_code, postal_code, list_price_u....
Hemnet.se includes 4 actions (search, sold, detail). Hemnet.se The primary catalog return is results[]{id, url, street_address, area, housing_form, asking_price{amount_sek}, fee, square_me....
Property Snapshot includes 4 actions (snapshot, resolve, batch). Property Snapshot The primary catalog return is property{address_normalized,country,source_engine,source_id,listing_url}, match{mode: url|addre....
Funda.nl includes 3 actions (search, detail, area). Funda.nl The primary catalog return is results[]{id, url, contract, object_type, price{amount_eur, kind}, surface_m2, rooms, bedrooms,....
Idealista includes 3 actions (search, detail, geography). Idealista The primary catalog return is results[]{id, url, title, price, currency, rooms, bathrooms, surface_m2, floor, features[], thu....
Immobiliare.it includes 3 actions (search, detail, geography). Immobiliare.it The primary catalog return is results[]{id, url, price_eur, contract, typology, rooms, bedrooms, bathrooms, surface_m2, floor....
OnTheMarket includes 3 actions (location_search, search, property_detail). OnTheMarket The primary catalog return is matches[]{location_id, name, display_name}, count.
Questions about Real Estate APIs
Which Real Estate API is free?
Every Real Estate API listed here can be tried with ReefAPI's free tier: 1,000 credits on signup, no card required. The current hub includes Zillow, Realtor.com, Rightmove, Japan Real Estate, Redfin, Hemnet.se, Property Snapshot, Funda.nl, Idealista, Immobiliare.it, OnTheMarket.
Do these Real Estate APIs need login?
No source-site login is needed for the listed ReefAPI responses. You call ReefAPI with an x-api-key header, and each engine returns the standard JSON envelope.
How fresh is the Real Estate data?
Production requests fetch live data through ReefAPI. The table's sample data point comes from the committed snapshot for each engine, and the sitemap uses catalog freshness for recrawling.
What is the best Real Estate API to start with?
Zillow appears first because this hub ranks engines by action count, then alphabetically for ties. Use that as a coverage signal, then choose the API whose returned fields match your workflow.