JM

Electrical contractorHacienda Heights, CA

John's Mechanical Services

Licensed since 1987 · Sole Owner · 4 building permits on record

CSLB #512067 · ActiveWorkers' comp insuredBonded $25,000

License classes

C-10 ElectricalC-20 HVAC

4

Permits on record

1 jurisdiction

0

Permits in 3 years

last Feb 18, 2020

Work history

Building permits: City of Los Angeles

Permits by year

Data covers City of Los Angeles 2006–Oct 2026.

What they build

Electrical

3

HVAC

1

Most recent permits

Issued	Work	Jurisdiction	ZIP
Feb 18, 2020	Electrical	City of Los Angeles	90031
Jan 16, 2020	Electrical	City of Los Angeles	90008
Aug 22, 2019	Electrical	City of Los Angeles	90012
Aug 22, 2019	HVAC	City of Los Angeles	90012

Only the type of work, date and ZIP are shown — never homeowner names or street addresses.

Permits are matched to this contractor by CSLB license number on the permit

Where they work

Building permits

Jurisdictions

Los Angeles

4

Top ZIP codes

ZIP 900122
ZIP 900081
ZIP 900311

Area is where permits were issued, not the office address

License, bond & insurance

California Contractors State License Board

CSLB license#512067 · Active
Business typeSole Owner
Issued · expiresJun 10, 1987 · Jun 30, 2027
OfficeHacienda Heights, CA 91745
CSLB record updatedAug 19, 2026

Contractor bond$25,000 · since May 15, 2026
Bond companyAtlantic Specialty Insurance Company
Workers' compensationWorkers' Compensation Insurance · until Jun 27, 2027
InsurerState Compensation Insurance Fund

License classes

C-10 ElectricalC-20 HVAC

Always confirm a license on cslb.ca.gov before signingCheck another license

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Questions & answers

Is John's Mechanical Services licensed?

CSLB license #512067 is active, issued Jun 10, 1987 and valid through Jun 30, 2027, with classes C-10, C-20.

Is John's Mechanical Services insured and bonded?

CSLB lists workers' compensation insurance with State Compensation Insurance Fund until Jun 27, 2027 and a $25,000 contractor bond with Atlantic Specialty Insurance Company.

How many jobs has John's Mechanical Services done?

Building permits name the company on 4 jobs, including 3 electrical, 1 hvac.

Where does John's Mechanical Services work?

Most permits are in City of Los Angeles.

Sources

Contractors State License Board — license, bond and workers' comp records (Aug 19, 2026).
Building permits — City of Los Angeles.

Answers use only the facts on this pageIs this your business? Update listing