ATTOM, RentCast & PropertyRadar vs Deal Run
If you're building software or a spreadsheet that needs raw property data, use an API: RentCast is the easiest start (50 free requests a month, paid plans from $74), ATTOM is the deeper dataset for products (from $500 a month), and PropertyRadar fits if you also want owner lists and contacts (API included on plans from $119 a month). If what you want is an answer on a deal, meaning comps, ARV, repairs and a max offer, raw data isn't that answer, and Deal Run (our product) does the analysis from $29 a month.
Disclosure: Deal Run is our product. It's listed last because it isn't a data API, and we say plainly when you need one instead.
For the wider field, including MLS feeds and which vendors offer MCP servers for ChatGPT or Claude, see our real estate data API guide. This page is for the investor deciding between raw data and a finished analysis.
Quick comparison
| Option | What you get | Price (checked Oct 30, 2026) | Free tier or trial | What you still do yourself | Best for |
|---|---|---|---|---|---|
| 1. RentCast | Records, owner details, value and rent estimates, sale and rental comps, listings | $74/mo (1,000 requests), $199 (5,000), $449 (25,000) | 50 requests/mo free | Pick comps, judge condition, repairs, offer math | Small apps and spreadsheet automation |
| 2. ATTOM | 160M+ properties: ownership, sales history, loans, sales comps, schools, crime | Basic Property from $500/mo; Premium on request | 30-day free trial | Everything on top of the data | Products with steady volume |
| 3. PropertyRadar | Investor data platform with an API: lists, owner info, phone and email appends | Solo $119/mo ($99 annual); Team $249 ($199); Business $599 ($549) | 5-day trial | The deal analysis | Investors automating lists and contacts |
| 4. Deal Run (our product) | An app, not a data feed: comps, ARV, repairs, max offer, then buyers | Analyze $29/mo; Analyze + Sell $99/mo or $83/mo billed annually | Public demo; pay per deal from $2 | Check its comps | Investors who want the answer, not the data |
Data vs. analysis: the real decision
An API hands you facts about a property: who owns it, what it last sold for, the loan, the tax value, nearby sales, and usually an automated value estimate. A deal needs judgment on top of those facts. Which nearby sales were renovated? What does this house need? Is it a flip, a rental or a wholesale, and what's the most you can pay? None of the three APIs below answers those for you; you build that logic yourself or do it by hand.
Two data gaps matter to investors. First, sold prices: in non-disclosure states such as Texas and Utah the deed is public but the price usually isn't, so ask any vendor how it fills those gaps. Second, MLS data: there's no open MLS API. Each MLS licenses its feed, usually to brokers and their vendors, so a general data API isn't the same as MLS sold comps with photos and remarks.
1. RentCast — the easiest API to start with
RentCast's API page lists 150+ million property records and market trends for 38,000+ ZIP codes, with owner details, valuation estimates, sales and rental comps, and active listings. Its documentation says the data comes from county records, recorded deeds, tax assessor databases and online feeds. You can sign up and make calls without a sales call. Our data API guide also notes that RentCast describes an MCP server, so an AI assistant can query it with your key.
Price: Developer is free for 50 requests a month. Foundation is $74/mo for 1,000 requests, Growth $199 for 5,000, Scale $449 for 25,000. Overage runs from $0.20 a request on the free plan down to $0.015 on Scale.
Watch out for: its value and rent numbers are automated estimates. A deal can take several requests (record, value, rent, comps), so count calls against your real workflow.
Verdict: the pick for a small app, a spreadsheet or an AI-assistant hookup. Not a shortcut to an ARV.
2. ATTOM — the deepest dataset, priced for products
ATTOM says its API covers 160+ million U.S. properties and 99% of the U.S. population, with ownership, lat/long, square footage, loan types, sales history, sales comps, crime, schools and more. Our data API guide notes that ATTOM also describes an MCP server, and that Estated is now part of ATTOM.
Price: Basic Property API starting at $500 a month; Premium Property is contact-us pricing. A free 30-day trial comes through its developer platform.
Watch out for: $500 a month is product money, not a solo investor's analysis budget.
Verdict: pick ATTOM if you're building something with steady volume and need breadth. Use the trial to test coverage in your counties first.
3. PropertyRadar — investor data with the API included
PropertyRadar is an investor and marketing data platform first, and its pricing page lists API access on all three plans. Its developer docs describe list building, owner information, and phone and email appends; results that return records count as exports or contact purchases, billed like the rest of your account. Plans include monthly phones and emails: 250 on Solo, 500 on Team and 2,500 on Business, then 8¢, 6¢ and 4¢ a contact.
Price: Solo $119/mo or $99/mo paid annually; Team $249 or $199; Business $599 or $549. 5-day free trial. More in our PropertyRadar review.
Watch out for: it's built for finding owners to market to, not for valuing one house.
Verdict: pick it if you already pull lists and want to automate them, for example through Zapier. Not the tool if your question is "what's this deal worth?"
4. Deal Run (our product) — the analysis, not the data
Deal Run is web and iPhone software for wholesalers and small investors, not a data feed. Enter an address and it pulls MLS-grade comps, sold and rental, calculates ARV, estimates repairs from the property's photos, and works out a max offer for flip, rental and wholesale exits, in all 50 states. Analyze + Sell then helps you sell it: a deal page, a ranked list of local landlords and flippers who recently bought nearby, skip-traced phones and emails, and sending from your own Gmail. Text blasts go out from your own number.
Price: Analyze is $29/mo for deal analysis, with one lifetime disposition deal with up to 100 buyers. Analyze + Sell is $99/mo, or $83/mo billed annually ($999 a year), with 15 disposition deals a month and 100 skip-traced buyers per deal. Or pay per deal: $2 to analyze, $20 with 100 buyers. The public demo on the homepage lets you enter an address and see the analysis before you pay. See the pricing page and how Deal Run works. Deal Run is made by Deal Run LLC in Houston, Texas; company, data, billing and refund facts are on our trust page.
Watch out for: there are no lead lists or raw data feed, and it isn't a substitute for an API if you're building software. Check its comps like any source.
Verdict: pick Deal Run if you were about to wire up an API just to get an ARV and an offer price on your own deals. Pick an API if you need data across thousands of properties or inside your own product.
A quick way to decide
- You write code or build spreadsheets: start on RentCast's free tier; move to ATTOM when volume and breadth justify $500 a month.
- You market to owners: PropertyRadar, or see our best property data tools for list platforms.
- You have a deal and need the numbers: an analysis tool, or our free guide on pulling comps by hand.
Frequently Asked Questions
What is the cheapest property data API?
Of the three here, RentCast. On October 30, 2026 its Developer plan was free for 50 requests a month, and paid plans were $74 a month for 1,000 requests, $199 for 5,000 and $449 for 25,000. ATTOM's Basic Property API started at $500 a month.
How much does the ATTOM API cost?
ATTOM's pricing page listed the Basic Property API starting at $500 a month and the Premium Property API as contact-us pricing on October 30, 2026. Its API page offered a free 30-day trial through its developer platform.
Can I get comps and ARV from a property data API?
You can get the raw material: sales history, sales comps and automated value estimates. You still have to pick the comps that match the house after repairs, judge condition, estimate repairs and work out an offer. An automated value estimate is not an ARV.
Does PropertyRadar have an API?
Yes. On October 30, 2026 its pricing page listed API access on all three plans: Solo at $119 a month or $99 a month paid annually, Team at $249 or $199, and Business at $599 or $549. Records the API returns count as exports or contact purchases, billed like the rest of your account.
Should an investor use a data API or a deal analysis tool?
Use an API if you are building software, automating a spreadsheet or feeding many properties into your own model. Use an analysis tool if you want comps, ARV, repairs and a max offer on the deals in front of you without building anything.
Sources and Check Dates
- RentCast API, rentcast.io/api: plans, included requests, overage rates, free Developer plan, 150+ million records, 38k+ ZIP codes, data categories. Checked October 30, 2026.
- RentCast API docs, developers.rentcast.io: data sources; MCP server. Checked October 29, 2026 (via our data API guide).
- ATTOM Property Data API, attomdata.com/solutions/property-data-api: 160+ million properties, 99% of the population, data types, free 30-day trial. Checked October 30, 2026.
- ATTOM API pricing, attomdata.com pricing: Basic Property from $500/month, Premium on request, free trial. Checked October 30, 2026.
- ATTOM MCP server and Estated merger: checked October 29, 2026 (via our data API guide).
- PropertyRadar pricing, propertyradar.com/pricing: plan prices, included contacts, overage, 5-day trial, API on all plans. Checked October 30, 2026.
- PropertyRadar API, developers.propertyradar.com: lists, owner info, appends, per-record billing, Zapier. Checked October 29, 2026 (via our data API guide).
- Non-disclosure states and MLS licensing: our real estate data API guide, sources checked October 29, 2026.
- Deal Run plans and features: our own product and pricing page. Checked October 30, 2026.
Related Articles
- Real Estate Data APIs Compared
- Best Property Data Tools
- PropertyRadar Review
- PropertyRadar Alternatives
- Can ChatGPT Analyze a Real Estate Deal?
- Zillow vs Redfin vs MLS vs Deal Run for Comps
InvestorLift, InvestorBase, PropStream, DealMachine, BatchLeads, REsimpli, Carrot, Propelio, DealCheck, FreedomSoft, Bricked AI, ChatARV, Privy, Backflip, New Western, Zeno Investments, and all other named products and companies are trademarks of their respective owners. Deal Run is not affiliated with, endorsed by, or sponsored by these companies. Pricing and feature information is based on publicly available sources and may change; verify current offerings on each company's website.