aid: 42-floors
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/42-floors.png
name: 42 Floors
description: >-
  42Floors was a Y Combinator- and 500 Global-backed commercial real estate
  search platform founded in 2011 by Jason Freedman to make it easy to discover
  and lease office, coworking, retail, industrial, and warehouse space across
  top U.S. markets. It aggregated a large listings database (the "42Floors MLS")
  that brokers and tenants searched online. The company was acquired by Knotel in
  2018, and the 42floors.com domain and listings service were later taken over by
  Yardi, which folded them into CommercialCafe — 42floors.com now redirects there.
  The only surviving developer surface is the first-party `mls` RubyGem, a client
  for the (now-decommissioned) 42Floors MLS API at mls.42floors.com.
url: https://raw.githubusercontent.com/api-evangelist/42-floors/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-status: acquired
x-status-note: >-
  Acquired by Knotel (2018); listings service later acquired by Yardi and folded
  into CommercialCafe. 42floors.com redirects to commercialcafe.com; the MLS API
  (mls.42floors.com) and docs (docs.42floors.com) return SiteNotFound.
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Commercial Real Estate
- PropTech
- Real Estate Listings
- Office Space
- MLS
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://42floors.com
- type: GitHubOrganization
  url: https://github.com/42floors
- type: SourceCode
  url: https://github.com/42floors/mls-gem
- type: Packages
  url: packages/42-floors-packages.yml
- type: SDKs
  url: packages/42-floors-packages.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence