Is Mason Air Systems licensed, insured & complaint-free in California?
As of October 6, 2026, Mason Air Systems's California contractor license (CSLB #1019634, classification C20) carries the status "Contr Bond Susp", according to the California Contractors State License Board (CSLB).
Mason Air Systems
Not in good standing
This license is not active or in good standing, per the California Contractors State License Board (CSLB).
Why: Suspended over a contractor's bond issue.
- Bond surety — who to file a claim against
- Bond number
- How to make a bond claim
- What “Not in good standing” means + what to ask
- License expiration date
- Registered business entity & contact
- Dated certificate PDF — emailed with your receipt
Unlock every field above for Mason Air Systems — 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.
Principals on record · CSLB
Workers’ compensation · CSLB
- Carrier
- WESCO INSURANCE COMPANY
- Policy
- WES3857675
- Effective
- March 31, 2026
- Expires
- March 31, 2027
What this record means
What "Contr Bond Susp" means
A bond-related suspension means the CSLB records an issue with a required bond on file. The license is not in good standing until it is resolved. The CSLB record shows the current detail and any path to reinstatement.
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 #1019634 on the official CSLB site. This page is current as of October 6, 2026; the CSLB record is updated continuously.
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 C20 covers
CSLB #1019634 is classified Heating & Air Conditioning (C-20). 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 Mason Air Systems licensed in California?
The California Contractors State License Board (CSLB) lists Mason Air Systems's license, CSLB #1019634, with the status "Contr Bond Susp" as of October 6, 2026. A non-CLEAR status means the license is not in good standing; check the official CSLB record for the current detail.
Is Mason Air Systems insured?
As of October 6, 2026, the California Contractors State License Board (CSLB) shows an active workers'-compensation policy on file for CSLB #1019634. This covers workers' comp; it does not by itself confirm general-liability coverage, which the CSLB does not track.
Does Mason Air Systems have complaints or violations?
As of October 6, 2026, the California Contractors State License Board (CSLB) lists CSLB #1019634 with the status "Contr Bond Susp". The details, including any underlying citation or judgment, are on the official CSLB record.
Who runs Mason Air Systems?
The California Contractors State License Board (CSLB) lists Mason Air Systems as a sole-owner or single-principal license (CSLB #1019634). The named principal is shown in the personnel section below, as recorded by the CSLB.
Is Mason Air Systems bonded?
The California Contractors State License Board (CSLB) shows the contractor's bond for CSLB #1019634 as lapsed or cancelled as of October 6, 2026. Verify the current bond status on the official CSLB record.
How long has Mason Air Systems been licensed?
The California Contractors State License Board (CSLB) shows CSLB #1019634 was first issued on October 20, 2016, about 9 years ago.
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This record compiles California Contractors State License Board (CSLB) data — license, insurance, principals, and enforcement — that CSLB publishes across separate pages, current as of October 6, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.