LoopNet

LoopNet is the leading commercial real estate marketplace, owned by CoStar Group, offering access to property listings, sale comparables, lease rates, market analytics, and CRE investment data. Brokers, owners, and investors use LoopNet to market and discover office, retail, industrial, multifamily, land, and hospitality properties across the US, Canada, and the UK. Integration is available via LoopLink for embedding property search on third-party websites, and data access for enterprise clients is arranged through CoStar Group agreements.

LoopNet publishes 1 API on the APIs.io network. Tagged areas include Commercial Real Estate, Property Listings, CRE, Real Estate, and Market Analytics.

LoopNet’s developer surface includes documentation, engineering blog, pricing, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

21.8/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

AccessPaid

1 APIs

Commercial Real EstateProperty ListingsCREReal EstateMarket AnalyticsCoStarLease RatesSale Comparables

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 21.8/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.2 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 2.7 / 13

Governance 0.0 / 12

Discoverability 6.9 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/loopnet: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Loopnet Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: loopnet
name: LoopNet
description: LoopNet is the leading commercial real estate marketplace, owned by CoStar Group, offering access to property
  listings, sale comparables, lease rates, market analytics, and CRE investment data. Brokers, owners, and investors use LoopNet
  to market and discover office, retail, industrial, multifamily, land, and hospitality properties across the US, Canada,
  and the UK. Integration is available via LoopLink for embedding property search on third-party websites, and data access
  for enterprise clients is arranged through CoStar Group agreements.
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/loopnet.png
url: https://raw.githubusercontent.com/api-evangelist/loopnet/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Commercial Real Estate
- Property Listings
- CRE
- Real Estate
- Market Analytics
- CoStar
- Lease Rates
- Sale Comparables
apis:
- aid: loopnet:loopnet-listings-api
  name: LoopNet Listings API
  description: Access commercial real estate property listings including office, retail, industrial, multifamily, land, and
    hospitality properties for sale and lease across the US, Canada, and UK. Data includes property details, lease rates,
    sale prices, cap rates, NOI, building class, square footage, zoning, broker information, and geolocation coordinates.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.loopnet.com/solutions/
  baseURL: https://api.loopnet.com
  tags:
  - Commercial Real Estate
  - Property Listings
  - Lease Rates
  - Sale Comparables
  - Market Data
  properties:
  - type: Documentation
    url: https://www.loopnet.com/solutions/
  - type: Website
    url: https://www.loopnet.com/
common:
- type: DomainSecurity
  url: security/loopnet-domain-security.yml
- type: Website
  url: https://www.loopnet.com/
- type: Documentation
  url: https://www.loopnet.com/solutions/
- type: GitHubOrg
  url: https://github.com/loopnet
- type: LinkedIn
  url: https://www.linkedin.com/company/loopnet
- type: Blog
  url: https://www.loopnet.com/learn/
- type: Pricing
  url: https://www.loopnet.com/solutions/ad-packages/silver-listing-plan
- type: StatusPage
  url: https://loopservice.statuspage.io/
- type: X
  url: https://x.com/loopnet
- type: Plans
  url: plans/loopnet-plans-pricing.yml
- type: RateLimits
  url: rate-limits/loopnet-rate-limits.yml
- type: FinOps
  url: finops/loopnet-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

LoopNet

Kin Score

APIs 1

LoopNet Listings API

Pricing Plans 1

Loopnet Plans Pricing