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California contractor license

Caswell Ironworks

Caswell Ironworks of Oakland holds California license 1090490 (B General Building, C13 Fencing, C23 Ornamental Metal, C51 Structural Steel, C60 Welding). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires May 31, 2027.

Doing business as Caswell Design Build Corporation.

Active

Caswell Ironworks, Oakland

License
1090490
Class
B General Building; C13 Fencing; C23 Ornamental Metal; C51 Structural Steel; C60 Welding
Expires
May 31, 2027
Bond
$25,000
Workers' comp
Insured to Apr 17, 2027

CSLB file dated Oct 31, 2026

From the CSLB file dated Oct 31, 2026. Not a consumer report; check the board before you hire.

Has the board taken action on this license?

None in the CSLB file dated Oct 31, 2026. Confirm with the board: CSLB license check

What bond, insurance and workers' comp are on file?

Bond
$25,000Merchants Bonding Company (Mutual), from Apr 13, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredOmaha National Casualty Company, from Apr 17, 2026, to Apr 17, 2027

Who is on this license?

Responsible managing officer
Donaciano D. CaswellSince Apr 22, 2022

What work does this license cover?

Issued Apr 22, 2022. Inactive Apr 22, 2022 to May 15, 2023. Reissued May 15, 2023.

Which other Oakland businesses hold B General Building?

General Contractors in OaklandCalifornia general contractors

What should you check before hiring?

What to ask before you hire

  1. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  2. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  3. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  4. Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. An exemption on file means the contractor told the CSLB it has no employees.
  5. Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.

If the license is lapsed

  1. Don't sign or pay a deposit until the CSLB shows the license active again.
  2. Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the CSLB, then check again.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
  4. Check another contractor. California license lookup

Sources

  1. CSLB License Master (cslb.ca.gov, Oct 31, 2026)
  2. Contractors State License Board (CSLB)