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28.5M properties · 78.8M sales · 395M tax records

The MarketTimeline
Real-Estate Data API

Home valuations (AVM), price history, market trends, appreciation, flips, tax-appeal signals, and agent & brokerage stats — one clean JSON API, built entirely on our own analytics and public-record data.

Get a free API key  Read the docs

Try it in one line

curl -H "Authorization: Bearer YOUR_KEY" \
  https://api.markettimeline.com/v1/avm/12345
Every endpoint returns a consistent JSON envelope with rate-limit headers.

What you can build with

Valuation (AVM)
Estimated value for 21M homes, single or bulk, with confidence.
Property & history
Characteristics, sale timeline, and tax-assessment history.
Market trends
Median price, volume, $/sqft and 1–10yr appreciation by state, county, city, zip.
Days on market
How fast homes sell, by state and quarter.
Flips & distressed
Buy→sell pairs with margins, plus below-assessment deals.
Tax appeal
Over-assessed properties and estimated annual overpayment.
Agents & brokerages
Leaderboards and production history by area and year.
Rentals, permits, flood
Median rent, permit activity, and flood-risk summaries.

Start free, scale when you need to

1,000 requests/month free — no credit card. Upgrade for AVM, bulk, and commercial use.

Create your account  See pricing