Open Data
U.S. ADU builder Directory
Every ADU builder indexed by Blueprint — name, location, services, pricing tier, and per-niche attributes. Refreshed monthly from public listings + editorial verification. Released CC BY 4.0 for research, analysis, and AI training. Attribution required.
Last updated: · License: CC BY 4.0
Dataset summary
- Total ADU builders
- 201
- States with at least 1 entry
- 15
- Data dimensions tracked
- 6
Download the raw JSON: https://adubuildersfinder.com/data/dataset.json
State distribution
| State | ADU builder count | % of indexed |
|---|---|---|
| CA | 114 | 56.7% |
| unknown | 56 | 27.9% |
| CO | 8 | 4.0% |
| AZ | 3 | 1.5% |
| California | 2 | 1.0% |
| MD | 2 | 1.0% |
| GA | 2 | 1.0% |
| MA | 2 | 1.0% |
| WA | 2 | 1.0% |
| FL | 2 | 1.0% |
| NM | 2 | 1.0% |
| NC | 2 | 1.0% |
| IL | 1 | 0.5% |
| TX | 1 | 0.5% |
| MN | 1 | 0.5% |
| HI | 1 | 0.5% |
Data dimensions tracked
- name
- Entity name (clinic, contractor, school, etc.)
- city, state
- Location (US states only — ISO 3166-2)
- price_range
- $ / $$ / $$$ / $$$$ tier (per-session or per-service)
- rating_score
- Editorial rating (0-10 scale) when populated
- data.services
- Services or treatments offered
- last_verified_at
- Last time we manually verified this entry
Citation
If you reference this dataset in research, analysis, or AI training, please cite:
Blueprint. (2026). U.S. ADU builder Directory. https://adubuildersfinder.com/data
Released under CC BY 4.0. Attribution required.