Public Record · California Contractor

Is Peterson Mechanical INC licensed, insured & complaint-free in California?

Peterson Mechanical INC has held an active California contractor license (CSLB #171486, B) for 68 years, with no open enforcement actions on record as of June 27, 2026, according to the California Contractors State License Board (CSLB).

Contractor record · CSLB #171486

Peterson Mechanical INC

General Building (B) · Sonoma, CA
License Active

Active · no open actions

License status is CLEAR with no open enforcement actions on record, per the California Contractors State License Board (CSLB).

As of June 27, 2026CSLB code: CLEARVerify on CSLB
License #
CSLB #171486
Classification
B
General Building (B)
Years licensed
68
since November 7, 1957
Contractor's bond
Active
$25,000
The full dossierRedacted preview
Bond suretywho to file a claim against
Bond number
How to make a bond claim
What “Active · no open actions” means + what to ask
License expiration date
All 9 classifications held
Registered business entity & contact
Dated certificate PDF — emailed with your receipt

Unlock every field above for Peterson Mechanical INC — including who to file a claim against the $25,000 bond. Delivered as a dated certificate PDF, emailed with your receipt. Public records, not a background check.

$9 · instant PDF · emailed with receipt

Principals on record · CSLB

TITCHENAL MICHAEL ALDENOfficer
BRANDNER ZACHARY ROUSSELLOfficer · Chief Executive Officer/President
PETERSON RICHARD WALTERResponsible Managing Officer/Chief Executive Officer/President · Chief Executive Officer/President
5 more principals on record

Workers’ compensation · CSLB

Workers' Compensation Insurance
Carrier
OLD REPUBLIC INSURANCE COMPANY
Policy
MWC30716126
Effective
April 1, 2026
Expires
April 1, 2027

What this record means

How to verify this yourself

Every fact on this page comes from the California Contractors State License Board (CSLB). You can confirm it directly: look up CSLB license #171486 on the official CSLB site. This page is current as of June 27, 2026; the CSLB record is updated continuously.

What the contractor's bond covers

California requires most licensed contractors to carry a $25,000 contractor's bond. It can pay certain claims for license-law violations — it is not insurance for your project and is not a measure of work quality. The CSLB lists the surety and bond number.

What this record does and does not tell you

The California Contractors State License Board (CSLB) tracks license status, classification, bond, and workers'-comp. It does not rate work quality, track general-liability insurance, or collect customer reviews. Use it to confirm the license is real and in good standing, then check references and a written contract separately.

What classification B covers

CSLB #171486 is classified General Building (B). A California contractor is licensed only for the classifications on record; work outside them may fall outside the license. The full classification list is on the official CSLB record.

Common questions

Is Peterson Mechanical INC licensed in California?

Yes. As of June 27, 2026, the California Contractors State License Board (CSLB) lists Peterson Mechanical INC with an active contractor license, CSLB #171486 (classification B), in a CLEAR status.

Is Peterson Mechanical INC insured?

As of June 27, 2026, the California Contractors State License Board (CSLB) shows an active workers'-compensation policy on file for CSLB #171486. This covers workers' comp; it does not by itself confirm general-liability coverage, which the CSLB does not track.

Does Peterson Mechanical INC have complaints or violations?

As of June 27, 2026, the California Contractors State License Board (CSLB) shows no open enforcement actions, citations, or disciplinary bonds on record for CSLB #171486. The CSLB is the authoritative source for complaint history.

Who runs Peterson Mechanical INC?

The California Contractors State License Board (CSLB) lists 8 principals on record for CSLB #171486, shown by name and title in the personnel section below.

Is Peterson Mechanical INC bonded?

As of June 27, 2026, the California Contractors State License Board (CSLB) shows an active contractor's bond on file for CSLB #171486. California requires a $25,000 contractor's bond; it protects against certain license-law violations, not a guarantee of work quality.

How long has Peterson Mechanical INC been licensed?

The California Contractors State License Board (CSLB) shows CSLB #171486 was first issued on November 7, 1957, about 68 years ago.

Get a free quote from a vetted general building contractor in Sonoma.

Comparing options? We can connect you with a licensed, insured general building contractor for a free quote. Optional — the verdict above is already free and never behind a form.

Free · no obligation

This record compiles California Contractors State License Board (CSLB) data — license, insurance, principals, and enforcement — that CSLB publishes across separate pages, current as of June 27, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.