Documentation

Build on the permit dataset

Everything you need to integrate with the Builders Monitor API and understand the unified permit dataset — from your first request to field-level schema semantics.

Get started Get an API key
curl -H "X-Api-Key: $BM_API_KEY" \
  "https://api.buildersmonitor.com/v1/permits?state=CA&limit=20"

Browse the docs

Three places to start

The overview walks you from key to first response; the interactive reference lets you fire real requests; the dictionary defines every field you’ll get back.

Start here

API Overview

Authentication, endpoints, rate limits, and multi-language code samples for the Builders Monitor REST API.

Read the overview

Interactive

API Reference

Browse every /v1 endpoint and send live, authenticated requests straight from your browser.

Open the reference

Schema

Data Dictionary

Field-by-field definitions for every entity in the unified permit, property, contact, and inspection schema.

Explore the schema

At a glance

The essentials, before you open a single page.

Base URL

api.buildersmonitor.com

Auth header

X-Api-Key: prefix.secret

Spec

OpenAPI 3.1

Errors

RFC 9457 problem+json

Pagination

Keyset cursors

Exports

.jsonl.zst (zstd JSONL)

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