California contractor licence #662900

William G Avellar Heating And Air Conditioning

William G Avellar Heating And Air Conditioning holds California contractor licence 662900 (HVAC (Heating, Ventilating and Air-Conditioning)) in Forestville, Sonoma County. Status: Active · expires Jan 31, 2027.

Activelicence status

2027-01expires Jan 31, 2027

$25,000contractor's bond

Insuredworkers' comp

What this means

The licence is active: CSLB lists its status as clear. That means no suspension is on file; it does not rate the quality of the work.
It expires in 85 days (Jan 31, 2027). California licences renew every two years; work done after expiry without renewal is unlicensed.
Contractor's bond: $25,000 with American Contractors Indemnity Company. The bond is there to pay consumers and workers harmed by licence-law violations; it is not liability insurance and it does not guarantee the work.
Workers' comp: Workers' Compensation Insurance with Great American Alliance Insurance Company, policy through Dec 19, 2026.

Watch this licence: $9/month. We email you when CSLB's file shows a change to this licence's status, bond, workers' comp or expiry. Checked every Monday and Thursday. Cancel any time.

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Licence details

Licence number	662900
Business name (as CSLB lists it)	AVELLAR WILLIAM G HEATING AND AIR CONDITIONING
Business type	Sole Owner
Status	Active
Issued	Jan 13, 1993
Expires	Jan 31, 2027
City / county / ZIP	Forestville / Sonoma / 95436
Contractor's bond surety	American Contractors Indemnity Company
Bond amount	$25,000
Bond number	101105455
Bond effective	Sep 1, 2026
Workers' comp	Workers' Compensation Insurance
Workers' comp insurer	Great American Alliance Insurance Company
Workers' comp effective	Dec 19, 2025
Workers' comp expires	Dec 19, 2026
CSLB record last updated	Sep 10, 2026

Classifications

C-20 HVAC (Heating, Ventilating and Air-Conditioning): heating, ventilation and air-conditioning (HVAC) systems

Change history

Sep 1, 2026Current contractor's bond took effect (American Contractors Indemnity Company)
Dec 19, 2025Current workers' comp record took effect
Jan 13, 1993Licence issued

Changes come from comparing successive copies of CSLB's public licence master file (refreshed twice a week) since October 2026, plus the dates printed on the current record.

Need a bond or workers' comp quote?

If this is your licence and you need a contractor's bond, a replacement bond or workers' comp, request quotes from licensed providers. Free, no obligation.

Check the official record (free): CSLB licence 662900 on cslb.ca.gov. Always confirm there before you hire or sign.

Rasengan Data is a private service, not CSLB. This page is built from the public CSLB licence master file as published; it may lag the live CSLB record by a few days. Not legal advice. Is this your licence and something looks wrong? CSLB's record is the source; email rasengan.win@gmail.com about this page.