BuildZoom API
A Data API for permit history and contractor lookups is advertised at buildzoomdata.com, but access is sales-gated with no public spec, auth docs, pricing, or sandbox. Scrapers fill the gap by targeting an unsupported internal endpoint that can change without notice.
Frequently asked questions
BuildZoom scores D on the API Report Card. A Data API for permit history and contractor lookups is advertised at buildzoomdata.com, but access is sales-gated with no public spec, auth docs, pricing, or sandbox. Scrapers fill the gap by targeting an unsupported internal endpoint that can change without notice.
Without a usable official API, teams fall back on manual exports, file drops, or one-off vendor integrations. The other option is an unofficial API layer like Supergood that automates the authenticated web app directly.
BuildZoom is a San Francisco-based construction marketplace and data company founded in 2013 by David Petersen and Jiyan Wei, with backing from Y Combinator (W13), Formation 8, Founders Fund, and SV Angel; PitchBook lists ~$37M in total funding while other sources (Latka) report ~$16.1M revenue and ~108 employees.
Construction, split across two distinct buyer profiles. On the Marketplace, a homeowner describes a project on buildzoom.com, gets matched to several pre-screened contractors, and a BuildZoom project consultant guides them through bids, contracts, and (for premium) the build itself; contractors claim their auto-generated profile, respond to leads, and pay for premium placement or a percentage of won project value.
Medium-high in construction permit/contractor data; medium in residential remodel lead-gen.
BuildZoom sits on two distinct high-value data layers.
Mature.
No public developer portal, no published authentication or rate-limit documentation, and no self-serve signup, every API integration requires sales contact at partnerships@buildzoom.com. API Tracker lists BuildZoom with dashes across pricing, rate limits, authentication protocols, sandbox, and endpoints, confirming there is no public technical documentation. Full sourced list under Sources below.
Common alternatives include Shovels, Permit Ledger, ATTOM Data, CoreLogic, Dodge Construction Network, ConstructConnect. Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.