California / Builders / LADC Construction Inc. (LADC)
Permit history on file in San Jose
CSLB #1050698 · LADC CONSTRUCTION INC · Corporation
Prefab ADU builder based in San Jose. Builds detached ADUs and manufactured ADUs, built in a factory and installed on site. Published prices start at $140,000. Says it serves 3 California cities.
| City | Standing | ADU permits | Pre-approved plans |
|---|---|---|---|
| San Jose | Permits on file | 2 | no |
| Santa Clara | Nearby permits | none | no |
The company’s own description · licence shown on their advertising matches the state register
| Model | Sq ft | Bed | Bath | From |
|---|---|---|---|---|
| L-350 | 350 | $140,000 | ||
| L-500 | 500 | 1 | 1 | $170,000 |
| L-520 N | 520 | 1 | 1 | $180,000 |
| L-665 | 665 | 2 | 1 | $220,000 |
| L-750 | 750 | 2 | 2 | $245,000 |
| L-795 | 795 | 2 | 2 | $245,000 |
| L-800 | 800 | 2 | 2 | $265,000 |
| L-800 P | 800 | 2 | 2 | $345,000 |
| L-1190 | 1190 | 2 | 2 | $355,000 |
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.
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.