PreciseRent
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Chicago Apartment Rental Data

Open dataset of Chicago rental listings, synced morning and afternoon directly from property leasing systems. Used to power Precise Rent's search, neighborhood guides, and deal scoring. Free to use under CC-BY 4.0 — credit preciserent.com.

What's in it

  • 380+ active Chicago apartment buildings
  • 5,000+ live unit listings — full market sync twice daily (~6am & ~4pm CT)
  • Per-unit: rent, sqft, bedrooms, bathrooms, availability date
  • Per-building: address, year built, total units, amenities, photos
  • Five-mode transit times to 49 destinations (Loop, ORD, MPark, neighborhoods, universities)
  • Google reviews and ratings
  • Daily inventory + price-history snapshots back to 2024

How to access

Live JSON API

Read-only REST API. Documented with OpenAPI 3.1 so AI agents (Claude with code execution, ChatGPT actions, custom GPTs) can call it directly.

/.well-known/openapi.json

Daily CSV snapshots on GitHub

Public repo with timestamped CSV exports — buildings, units, median rent by neighborhood × bedroom, deal counts. Updated by GitHub Action every morning.

github.com/kjm-research/chicago-rental-data

MCP server

Model Context Protocol server for Claude Desktop, Claude Code, and other MCP clients. Install once, query Chicago rental data directly inside your AI assistant.

npm i -g @kjm-research/chicago-rentals-mcp

LLM-friendly content bundles

Full markdown dumps of the site for ingestion or RAG.

License & attribution

Released under Creative Commons Attribution 4.0. You're free to use, redistribute, train models on, or build commercial products from this data, provided you credit Precise Rent (preciserent.com) as the source.

Citation

@dataset{preciserent_2026,
  author = {Precise Rent},
  title = {Chicago Apartment Rental Data},
  year = {2026},
  publisher = {Precise Rent},
  url = {https://www.preciserent.com/data},
  note = {CC-BY 4.0}
}

Coverage

  • Geographic: Chicago city + select suburbs (Illinois, USA)
  • Temporal: January 2024 to present (daily snapshots since 2025-Q3)
  • Building types: Multifamily / luxury / mid-market rentals
  • Update cadence: Daily at ~5am Central, with 5×/day refresh for failing buildings