California / Builders / Metricon Homes Inc
Licence verified, no local permit history
CSLB #1128717 · METRICON HOMES INC · Corporation
Prefab ADU builder based in San Ramon. Builds detached ADUs and manufactured ADUs, built in a factory and installed on site. Published prices start at $229,999. Says it serves 3 California cities.
No ADU permits are on file under this licence in the cities we cover. Most California cities do not publish the contractor's name on a building permit, so this usually reflects what a city discloses rather than what a builder has built. Ask them directly for recent addresses and permit numbers you can look up.
Metricon Homes builds prefabricated steel-framed houses and detached backyard ADUs engineered against fire, wind, and earthquake. Buyers pick a state-approved plan or commission a custom design, and the company covers planning, permitting, and construction. Much of the current work is in California wildfire rebuild areas.
The company’s own description · licence shown on their advertising matches the state register
| Model | Sq ft | Bed | Bath | From |
|---|---|---|---|---|
| Marigold | 500 | 1 | 1 | |
| Camellia | 600 | 2 | 1 | |
| Summit | 608 | 1 | 1 | $229,999 |
| Magnolia | 750 | 2 | 1 | |
| Dahlia | 800 | 2 | 2 | |
| Jade | 800 | 2 | 1 | $392,999 |
| Luxe | 800 | 1 | 1 | $334,999 |
| Horizon | 960 | 2 | 1 | $321,000 |
| Sunflower | 1200 | 3 | 2 |
Starting prices for a base model. They rarely include site work, utility connections, or city fees. Get a written quote against a drawing set before comparing builders on price.
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ADU Standards does not issue zoning determinations and does not endorse contractors. Licence details are from the California Contractors State License Board, checked 2026-08-15. A city that pre-approves a plan has vetted the plan, not the builder. Always confirm licence standing at cslb.ca.gov before you sign anything.