Mosaic Building Group website screenshot

Mosaic Building Group

Mosaic (Mosaic Building Group) is a full-stack construction technology company founded in 2017 and headquartered in Phoenix, Arizona. It is a national leader in build-to-rent residential construction and pre-development, pairing in-house software with local homebuilding partners to deliver personalized homes faster and at lower cost across Arizona and Texas. Its Mosaic Hub platform applies AI to construction planning and operations management. Backed by a16z (Series A lead) alongside Greylock, Innovation Endeavors, Founders Fund, Thrive Capital, SV Angel, and 8VC. Mosaic operates as a hybrid construction-plus-software business and does not publish a public developer API, developer portal, or API documentation at this time.

Mosaic Building Group is profiled on the APIs.io network. Tagged areas include Company, Construction Technology, Build-to-Rent, PropTech, and Real-Estate.

5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0
0 APIs
CompanyConstruction TechnologyBuild-to-RentPropTechReal-EstateHomebuildingConstruction Management

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0
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
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/mosaic-building-group: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Mosaic Building Group Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: mosaic-building-group
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/mosaic-building-group.png
name: Mosaic Building Group
description: Mosaic (Mosaic Building Group) is a full-stack construction technology company founded in 2017 and headquartered
  in Phoenix, Arizona. It is a national leader in build-to-rent residential construction and pre-development, pairing in-house
  software with local homebuilding partners to deliver personalized homes faster and at lower cost across Arizona and Texas.
  Its Mosaic Hub platform applies AI to construction planning and operations management. Backed by a16z (Series A lead) alongside
  Greylock, Innovation Endeavors, Founders Fund, Thrive Capital, SV Angel, and 8VC. Mosaic operates as a hybrid construction-plus-software
  business and does not publish a public developer API, developer portal, or API documentation at this time.
url: https://raw.githubusercontent.com/api-evangelist/mosaic-building-group/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Construction Technology
- Build-to-Rent
- PropTech
- Real-Estate
- Homebuilding
- Construction Management
tags_raw:
- Company
- Construction Technology
- Build-to-Rent
- PropTech
- Real Estate
- Homebuilding
- Construction Management
common:
- type: DomainSecurity
  url: security/mosaic-building-group-domain-security.yml
- type: Website
  url: https://mosaic.us/
- type: About
  url: https://mosaic.us/about-us
- type: Careers
  url: https://mosaic.us/careers
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1

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