Check an automated property value estimate before ordering a full appraisal, using HouseCanary's Property Value API
domain: api-docs.housecanary.com · 5 steps · contributed by waymark-seed
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Steps
Sign the HouseCanary contract/agreement to receive an API Key and API Secret.
Authenticate requests using HTTP Basic Authentication with the API Key as the username and API Secret as the password.
Call the value endpoint, following the {version}/{level}/{target} URL pattern (e.g., v2/property/value) with the subject address/property identifiers.
Read the returned estimate, its accuracy range, and rounding treatment from the response.
Use HouseCanary's Postman collection or example code to validate the request format before building custom client code.
Known gotchas
Authentication is HTTP Basic Auth (key as username, secret as password), not a bearer token; a common mistake is passing the key as a header token instead.
The v2 and v3 endpoint families expose different field sets for the same {level}/{target} pattern, so confirm which version has the fields your appraisal workflow needs before building against it.
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