CalAtlantic Group

CalAtlantic Group was a U.S. homebuilder formed on October 1, 2015 through the merger of Standard Pacific Homes and Ryland Homes. Headquartered in Arlington, Virginia, it became the fourth largest homebuilder in the United States before being acquired by Lennar Corporation in February 2018, which made Lennar the nation's largest homebuilder. CalAtlantic no longer operates as an independent entity and does not offer public APIs or developer resources.

CalAtlantic Group is profiled on the APIs.io network. Tagged areas include Construction, Defunct, Home Builders, Real-Estate, and Residential.

🌐 Visit website 📡 Source on GitHub
5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
0 APIs
ConstructionDefunctHome BuildersReal-EstateResidential

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 5.0/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Access Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Contract Governance 0.0 / 12
Discoverability 5.0 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
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 0 / 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
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
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Press 5

Recent news and press coverage referencing this provider.

Lennar acquires Irvine's CalAtlantic in $5.7 billion merger

2026-05-25

Lennar Completes Strategic Combination with CalAtlantic

2026-05-25

Lennar Makes Deal for CalAtlantic as Home Builders Face ...

2026-05-25

Ryland/Standard Pacific merger complete as trading ...

2026-05-25

Lennar buys CalAtlantic to become largest U.S. homebuilder

2026-05-25

Resources

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Other 2

Properties that don't map to a standard resource type

Wikipedia
Wikipedia
 Acquirer
Acquirer

Source (apis.yml)

apis.yml Raw ↑ 
aid: calatlantic-group
name: CalAtlantic Group
url: ''
x-api-posture: no-product-api
x-api-posture-basis: observed https://raw.githubusercontent.com/api-evangelist/calatlantic-group/refs/heads/main/apis.yml
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
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/calatlantic-group.png
type: Index
tags:
- Construction
- Defunct
- Home Builders
- Real-Estate
- Residential
tags_raw:
- Construction
- Defunct
- Homebuilders
- Real Estate
- Residential
created: '2024-01-01'
modified: '2026-04-23'
specificationVersion: '0.23'
description: CalAtlantic Group was a U.S. homebuilder formed on October 1, 2015 through the merger of Standard Pacific Homes
  and Ryland Homes. Headquartered in Arlington, Virginia, it became the fourth largest homebuilder in the United States before
  being acquired by Lennar Corporation in February 2018, which made Lennar the nation's largest homebuilder. CalAtlantic no
  longer operates as an independent entity and does not offer public APIs or developer resources.
apis: []
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/calatlantic-homes
- type: Website
  url: https://www.calatlantic-group.com
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/CalAtlantic_Homes
- type: Acquirer
  url: https://www.lennar.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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