Zillow Property Mortgage Estimate API

Provide a known zpid to request the documented monthly-cost breakdown from the property affordability model. This route exposes only the property ID; it does not accept a caller-defined down payment, credit score, interest rate or lender quote input. No live response for this mortgage-estimate route was saved, so exact component keys, model assumptions and completeness are unverified. Preserve supplied assumptions and unavailable components, and label the result as a modeled estimate. It is separate from the mortgage-rate endpoint and does not establish approval, qualification, a rate lock or the actual payment a lender will offer.

API Features

Property affordability-model read Request the documented modeled monthly-cost view for one selected home.

Cost-component research Inspect available breakdown components and retain missing portions instead of displaying a complete-looking invented total.

No custom financing inputs Only zpid is exposed on this route; user-defined credit, down-payment and rate assumptions belong in a separate scenario.

Estimate-versus-quote labeling Keep the modeled output distinct from lender approval, a quoted payment or a locked mortgage rate.

Live API Demo

GET /api/project/zillow-real-estate/get-property-mortgage-estimate

API Response (JSON)

{}

curl -X GET 'https://api.opendata-api.com/api/project/zillow-real-estate/get-property-mortgage-estimate?key=<API_KEY>&zpid=<zpid>'

curl -X GET 'https://api.opendata-api.com/api/project/zillow-real-estate/get-property-mortgage-estimate?key=<API_KEY>&zpid=<zpid>'

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Need Help?

If you encounter API issues or need other API requirements, please contact us.

Use Cases

Listing affordability panel: show available modeled monthly costs next to a selected home with explicit estimate labeling.
Model assumption review: identify which financing assumptions are supplied and which must remain unknown.
Independent scenario comparison: compare the returned model with a separately documented financing calculation in your application.
Lender discussion preparation: use the modeled breakdown to prepare questions rather than promise a borrower a payment or approval.

Frequently asked questions

Can I send my own down payment or credit score?

Not to this endpoint. zpid is its only parameter. Do not add financing fields from property-search or mortgage-rate requests to this route.

Does the modeled payment constitute a lender quote?

No. It is a documented affordability-model output, not a qualification decision, approval, rate lock or guaranteed payment.

Which monthly-cost components are verified?

No saved live response exists for this dedicated route, so exact component keys and assumptions are not established. Inspect the actual output and preserve missing components as unknown.

Related operations

Guides

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Inspect a Property Modeled Monthly Payment