Zillow’s free API died on September 30, 2021. Every ZWSID key stopped working that day.
If you’re searching for “Zillow API pricing,” you’re really asking: what does it cost to get Zillow property data through an API in 2026? The answer depends on which path you take. The official route through Bridge Interactive starts around $500 per month and requires MLS affiliation. Third-party REST wrappers like Zillapi start at $0 with a free tier and scale to $5 per month for 1,000 API calls. Here’s the full breakdown so you can pick the option that fits your budget and use case.
How much does the Zillow API cost in 2026?
There is no single “Zillow API price” because the original free API no longer exists. In 2026, accessing Zillow property data through an API costs anywhere from $0 (free tiers) to $500+ per month (enterprise feeds), depending on the provider, volume, and data coverage you need. The median cost across third-party wrappers is $0.003 to $0.005 per successful API call.
The confusion is understandable. Before 2021, Zillow gave every developer a free ZWSID key with no payment required. That key returned Zestimates, property details, and search results through XML endpoints. When Zillow pulled the plug, they didn’t replace it with a new public API. They replaced it with Bridge Interactive, an enterprise platform built for MLS-affiliated brokerages.
That left a gap. Third-party REST wrappers filled it.
What are the actual pricing options?
Six providers offer programmatic access to Zillow property data in 2026. Their pricing models, data coverage, and signup processes are wildly different. Here’s every option with real numbers.
Zillapi — $0 to $54/year
Zillapi is a self-serve REST API returning 300+ fields per property including Zestimates, tax records, price history, photos, and school ratings across 160M+ U.S. properties. No credit card required to start. Signup takes under 60 seconds.
| Plan | Credits | Rate limit | Cost | Per call |
|---|---|---|---|---|
| Free | 100 (one-time) | 200/min | $0 | $0.00 |
| Monthly | 1,000/month | 200/min | $5/mo | $0.005 |
| Annual | 12,000/year | 300/min | $54/yr | $0.0045 |
| Enterprise | Custom | 600/min | Custom | Custom |
Top-up credits cost $4 per 1,000 on the monthly plan and $3 per 1,000 on annual. One credit equals one successful API call (HTTP 2xx). Failed calls don’t consume credits.
Bridge Interactive — ~$500+/month
Bridge Interactive is Zillow’s official data distribution platform. It’s a RESO Web API designed for MLS-affiliated partners, not individual developers.
You need MLS affiliation to apply. Approval takes days to weeks. It does not expose Zestimates. Pricing varies by MLS, but a typical feed runs $30 to $100 per month for broker-level access and $500+ per month for MLS-wide feeds, according to Miami Realtors’ published IDX pricing.
ATTOM — $95+/month
ATTOM aggregates public records, MLS feeds, and tax assessor data across the U.S. They acquired Estated in 2024, consolidating two property data APIs into one. Their lowest tier starts at $95 per month for 5,000 API calls, which works out to roughly $0.019 per call, according to ATTOM’s listing on various comparison sites.
No free tier. No self-serve signup for API access.
APIllow — $0 to $99.99/month
APIllow offers a REST API for Zillow property data with a free ongoing tier. Their pricing runs $0.002 to $0.003 per request depending on volume.
| Plan | Requests/mo | Rate limit | Cost | Per call |
|---|---|---|---|---|
| Free | 50/month | 5/min | $0 | $0.00 |
| Pro | 3,333/month | 20/min | $9.99/mo | $0.003 |
| Ultra | 10,000/month | 60/min | $29.99/mo | $0.003 |
| Mega | 50,000/month | 120/min | $99.99/mo | $0.002 |
BatchData — $500+/month
BatchData focuses on bulk property data delivery. Their Property Search API starts at $500 per month for 20,000 records ($0.025 per record), scaling to $5,000+ per month for 750,000 records at roughly $0.007 per record, per their published pricing page.
This is enterprise-grade tooling. It makes sense for skip tracing, lead generation at scale, and portfolio analysis. It makes zero sense for a developer testing an integration.
RentCast — $0 to $299+/month
RentCast specializes in rental data: rent estimates, property records, and market analytics. Their developer plan includes 50 free API calls per month. Paid plans start at $74 per month, according to comparison data from multiple review sites.
Good for rental valuations. Not a full Zillow data replacement since it doesn’t include Zestimates.
How do these options compare side by side?
Here’s every option in one table so you can see the real cost differences. Sorted by minimum monthly spend.
| Provider | Minimum cost | Free tier | Zestimates | Per-call cost | Signup time | Credit card required |
|---|---|---|---|---|---|---|
| Zillapi | $0 | 100 credits (one-time) | Yes | $0.005 | 60 seconds | No |
| APIllow | $0 | 50/month (ongoing) | Yes | $0.003 | Minutes | No |
| RentCast | $0 | 50/month (ongoing) | No | ~$0.01+ | Minutes | No |
| ATTOM | $95/mo | No | No | ~$0.019 | Days | Yes |
| Bridge Interactive | ~$500/mo | No | No | Varies | Weeks | Yes |
| BatchData | $500/mo | No | No | $0.007-0.025 | Days | Yes |
Two things jump out from this table.
First, Zestimates are only available through third-party wrappers. Bridge Interactive, Zillow’s own platform, does not expose them. If you need Zestimates in your application, you’re using Zillapi, APIllow, or a scraper.
Second, the price gap between self-serve wrappers and enterprise feeds is enormous. A developer testing an integration pays $0 to $5 per month with Zillapi or APIllow. The same developer going through ATTOM or BatchData pays $95 to $500 per month before making a single API call.
What does “cost per call” actually mean?
Not all API calls are equal. A “$0.003 per call” claim from one provider and a “$0.019 per call” from another might not be comparing the same thing. Here’s what to watch for.
The first trap is how providers count a “call.” Zillapi charges 1 credit per successful API response (HTTP 2xx). Failed requests (404, 500) don’t count. Some providers charge per request regardless of success. Others charge per record returned, which means a search returning 40 results might cost 40 credits, not 1.
Then there’s the data question. Zillapi returns 300+ fields per property lookup. Some providers return a smaller field set at a lower price. If you need a second call to get tax records or photos, your effective cost per property doubles.
Rate limits are a hidden cost too. A $0.002 per call API with a 5 requests/minute rate limit takes 3.3 hours to pull 1,000 properties. A $0.005 per call API with a 200 requests/minute limit finishes the same job in 5 seconds.
And watch for overage charges. Some APIs auto-charge when you exceed your plan. Others stop with a 402 error. Zillapi does the latter. No surprise bills. Your API calls just stop working until you add credits.
What did the original Zillow API cost?
The original Zillow Web Services API was free. Completely free. Every developer got a ZWSID key at zillow.com/howto/api and could immediately call endpoints like GetSearchResults, GetZestimate, and GetComps.
It returned XML. The field set was limited compared to what’s available in 2026. Rate limits were tight. But the price was $0.
That’s why the current pricing situation surprises developers who haven’t checked since 2020. They remember free Zillow data and discover the cheapest complete option is now $5 per month.
Zillow retired the free API on September 30, 2021. The shutdown was part of a broader strategy to control data distribution through Bridge Interactive, according to Zillow Group’s developer portal.
If you have an old ZWSID key, it returns 403 errors on every request. There is no reactivation process.
When does the cost actually matter?
I talk to developers every week who spend hours comparing API prices before they’ve even tested whether the data fits their use case. That’s backwards.
If you’re prototyping, use a free tier. Zillapi’s 100 free credits or APIllow’s 50 monthly requests cost nothing. Test the response shape, field coverage, and data accuracy. Don’t optimize costs on an integration you haven’t built yet.
If you’re under 1,000 calls per month, Zillapi’s $5 monthly plan covers it. At this scale, your API bill is a rounding error compared to hosting, your time, and literally every other business cost.
Between 1,000 and 10,000 calls per month, Zillapi’s annual plan at $54 per year with $3 per 1,000 top-ups becomes the clear winner. You’re paying $0.003 to $0.0045 per call. At 10,000 calls per month, your annual bill is roughly $300.
Above 10,000 calls per month, contact Zillapi for enterprise pricing. Or evaluate ATTOM and BatchData if you need broader data beyond Zillow properties — foreclosures, skip tracing, building permits.
How to spend $0 testing Zillow API pricing right now
Don’t compare spreadsheets. Compare API responses.
Go to zillapi.com. Sign up with your email. Get 100 free credits. No credit card.
Look up a property you know. Does the Zestimate match Zillow.com? Do the fields cover your use case? How fast is the response?
Twenty minutes of testing tells you more than any pricing spreadsheet. Then the cost conversation becomes real instead of theoretical.
Frequently asked questions
How much does the Zillow API cost in 2026?
There is no single Zillow API price in 2026 because Zillow retired its free public API in September 2021. The official replacement, Bridge Interactive, starts around $500 per month and requires MLS affiliation. Third-party REST wrappers that serve the same Zillow property data range from $0 (free tiers with 50-100 credits) to $5 per month for 1,000 calls. Zillapi charges $0.005 per successful API call on its monthly plan.
Is there a free Zillow API in 2026?
Not from Zillow directly. Zillow shut down the free ZWSID API on September 30, 2021. Two third-party alternatives offer free tiers for Zillow property data. Zillapi gives 100 one-time credits at signup with no credit card. APIllow gives 50 requests per month on an ongoing basis. Both return Zestimates, property details, and listing data through REST endpoints.
What is the cheapest way to get Zillow data through an API?
The cheapest option is Zillapi’s annual plan at $54 per year for 12,000 credits, which works out to $0.0045 per API call. Each call returns 300+ fields including Zestimates, tax records, and listing details. Top-up credits cost $3 per 1,000 on the annual plan. For comparison, ATTOM starts at $95 per month and Bridge Interactive starts around $500 per month.
Why did Zillow shut down the free API?
Zillow retired the public Web Services API (ZWSID) on September 30, 2021 as part of a broader shift toward controlled data distribution through Bridge Interactive, their enterprise RESO Web API platform. Bridge requires MLS affiliation and formal application. The move restricted casual developer access but gave Zillow tighter control over how property data flows to third parties.
How does Zillow API pricing compare to other real estate APIs?
Zillow data through third-party wrappers costs $0.003 to $0.005 per call. ATTOM starts at $95 per month for 5,000 calls, roughly $0.019 per call. BatchData starts at $500 per month for 20,000 records. HouseCanary offers custom pricing starting at $19 per month. RentCast charges $74 per month after a free tier of 50 calls. Zillapi is the cheapest per-call option for Zillow-specific data.
Do I need a credit card to test the Zillow API?
Not with Zillapi. You sign up with an email address, receive a magic link, and get 100 free credits immediately. No credit card, no billing information, no approval process. Each credit equals one successful API call returning Zestimates, property details, and 300+ data fields. You only enter payment information if you upgrade to the $5 per month plan.