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California / Builders / Cobalt Construction

Permit history on file in San Jose

Cobalt Construction

CSLB #1047201 · COBALT CONSTRUCTION · Sole Owner

General contractor based in Roseville. Builds manufactured ADUs, built both on site and in a factory. Says it serves 2 California cities.

What the records show

Confirmed from public records
4ADU permits on file
7Years licensed
1Areas they work
ClearLicence standing

Licence and insurance

California Contractors State License Board
Status
Licence clear
Classification
B C33 C47, general building
Issued
2018-11-27 · expires 2026-11-30
Contractor bond
$25,000 MERCHANTS BONDING COMPANY (MUTUAL)
Workers' compensation
Covered SECURITY NATIONAL INSURANCE COMPANY
Disciplinary action
None on record
Registered address
ROSEVILLE, Placer County

Where they work

Confirmed from public records
CityStandingADU permitsPre-approved plans
San Jose Permits on file 4 no

About the company

From their website

Cobalt Construction is a sole-ownership contracting business registered at 1107 Elm St in Roseville, Placer County. Its licence classifications cover general building, painting and decorating, and manufactured housing, so it can set factory-built units as well as build on site. The permit record is small and the company does not run a public website.

  • Carries a manufactured housing classification, so factory-built unit placement is within scope
  • Sole ownership rather than a corporation
  • Registered in Roseville, roughly 120 miles from the San Jose work it permits

The company’s own description · licence shown on their advertising matches the state register

Founded
2018
Works as
General contractor
Builds
manufactured ADUs
Contact
(916) 879-0347

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.