Clear

RENKOW SERVICE CO

License #741409GardenaCorporationLicensed since October 15, 1997

License

Status: CLEAR
First issued: October 15, 1997
Expires: October 31, 2027
Entity: Corporation
Address of record: PO BOX 2519, Gardena, CA 90247
Phone of record: (310) 324 2500

Contractor bond

Surety: MERCHANTS BONDING COMPANY (MUTUAL)
Bond number: 101722786
Amount: $25,000
Effective: January 30, 2026

Workers’ compensation

Carrier: HARTFORD CASUALTY INSURANCE COMPANY
Policy number: 83WECAB4WH1
Effective: July 1, 2026
Expires: July 1, 2027

Are they licensed for your job?

A California contractor may only contract for work their classification covers. Pick the job and this reads the license on file against it.

What are you hiring them for?

Licensed to perform

C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor

A contractor may only contract for work within their classifications. See all 27 licensed warm-air heating, ventilating and air-conditioning contractors in Gardena.

People on this license

Name	Title	Since	Through
GLADNEY ARVESTER	Responsible Managing Officer/Chief Executive Officer/President	July 14, 2003	Current
BLACKBURN MARILYN LOUISE	Officer	October 15, 1997	June 17, 1999
GLADNEY ARVESTER	Officer	June 17, 1999	July 14, 2003
GRAEFF MARK VINCENT	Responsible Managing Officer/Chief Executive Officer/President	October 15, 1997	March 31, 1999
KERWIN PATRICK JOSEPH	Chief Executive Officer/President	June 17, 1999	April 14, 2000
KERWIN PATRICK JOSEPH	Responsible Managing Officer/Chief Executive Officer/President	April 14, 2000	March 12, 2003
KNISLEY STEVEN ELBERT BENJ	Responsible Managing Employee	June 17, 1999	February 18, 2000
VICTOR DENIS WALTER	Officer	October 15, 1997	April 11, 2012

Verified status badge

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Source: California Contractors State License Board public records. Coverage lapse is evaluated against today’s date; all other fields reflect the latest weekly CSLB file. Confirm at the CSLB’s official record before signing a contract.