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California contractor license

Diani Building Corp

Diani Building Corp of Santa Maria holds California license 850921 (A General Engineering, ASB Asbestos Certification, B General Building, C8 Concrete, C12 Earthwork and Paving, C21 Building Moving/Demolition, HAZ Hazardous Substance Removal Certification). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Dec 31, 2026.

Licensed 21 years, longer than 66% of 139 active Santa Maria general contractors.

Active

Diani Building Corp, Santa Maria

License
850921
Class
A General Engineering; ASB Asbestos Certification; B General Building; C8 Concrete; C12 Earthwork and Paving; C21 Building Moving/Demolition; HAZ Hazardous Substance Removal Certification
Expires
Dec 31, 2026
Bond
$25,000
Workers' comp
Insured to Apr 1, 2027

CSLB file dated Oct 29, 2026

From the CSLB file dated Oct 29, 2026. Not a consumer report; check the board before you hire.

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

Bond
$25,000Travelers Casualty And Surety Company Of America, from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTravelers Property Casualty Company Of America, from Apr 1, 2025, to Apr 1, 2027

Who is on this license?

Officer
Jeffrey K. NealSince Feb 11, 2005
Officer
Peter A. HemesathSince Feb 19, 2008
Officer
Brent M. LunaSince Apr 22, 2026
Officer
James A. DianiSince May 11, 2026
Responsible managing officer, CEO and president
Michael J. DianiSince Dec 10, 2004

What work does this license cover?

Issued Dec 10, 2004.

Which other Santa Maria businesses hold A General Engineering?

General Contractors in Santa MariaCalifornia 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 29, 2026)
  2. Contractors State License Board (CSLB)