Introduction

Borough is a REST API that provides structured access to NYC real estate data including rental and sale listings, building details, neighborhood boundaries, market statistics, building quality scores, and building-level internet provider availability sourced from the FCC Broadband Map.

What Borough provides

• 50+ fields per listing including pricing, concessions, amenities, photos, and agent info
• Building-level data with amenities, policies, NYC regulatory data, and quality scores
• Likely internet providers per building with FCC-sourced provider names, technologies, and advertised speeds
• 349 neighborhoods with encoded map boundaries
• Market snapshots with inventory, median prices, days on market, and concession rates
• Building quality scores derived from NYC Open Data (HPD violations, 311 noise, NYPD crime, transit proximity)
• Live SSE streaming for instant cached + live listing data (Pro+)
• Persistent watchers that monitor listings, buildings, or searches for changes (Business+)
• Webhooks for automated notifications on price drops, new listings, and status changes (Business+)
• MCP server for connecting AI agents directly to NYC real estate data

Pricing

Tier	Price	Requests/month	Rate Limit
Free	$0	100	10/min
Starter	$19/mo	5,000	30/min
Pro	$49/mo	25,000	60/min
Business	$99/mo	100,000	120/min

All tiers include access to search endpoints. Starter and above unlock property details, building data, and market statistics. Pro adds live SSE streaming. Business adds webhooks, persistent watchers, and real-time change notifications.

Internet provider availability

Building and property detail responses can include an internetProviders block sourced from the FCC Broadband Map Public Data API.

• Coverage is building-level, not unit-specific qualification
• Data reflects likely providers, advertised technologies, and max download/upload speeds
• Borough refreshes broadband availability on a monthly cadence and supports manual backfills for operational re-syncs

This product uses FCC APIs and/or Data but is not endorsed or certified by the FCC.

Contract validation status as of March 2-3, 2026: live National Broadband Map browser captures showed broadbandmap.fcc.gov/nbm/map/api/fabric/... endpoints and CostQuest Fabric license language restricting unauthorized scripted or programmatic access. Borough is validating that contract path before any further rollout of internetProviders, fiberOnly, or minDownloadMbps, and these FCC-backed features should be treated as provisional.

Quickstart

Get your API key and make your first request in under 2 minutes

API Reference

Explore all 20+ endpoints with examples and response schemas

MCP Server

Connect Claude, Cursor, or VS Code to query NYC data via AI

TypeScript SDK

Install the official SDK for typed access with auto-pagination