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Electrical contractorAnaheim, CA

Diversified Thermal Services LLC

Licensed since 1991 · Limited Liability · 63 building permits on record

CSLB #609967 · ActiveWorkers' comp insuredBonded $25,000Verified website
License classes
B General BuildingC-10 ElectricalC-20 HVACC-38 Refrigeration
63
Permits on record
2 jurisdictions
1
Permits in 3 years
last Oct 15, 2025
6
Roofing jobs
re-roofs and repairs

Work history

Building permits: City of Los Angeles, City of Anaheim

Permits by year

620191120201420211820229202312025
Data covers City of Los Angeles 2006–Oct 2026; City of Anaheim 1999–Sep 2026.

What they build

HVAC
28
Other building work
17
Electrical
12
Roofing
6

Most recent permits

IssuedWorkJurisdictionZIP
Oct 15, 2025RoofingCity of Anaheim—
Apr 17, 2023Other building workCity of Los Angeles90031
Apr 17, 2023Other building workCity of Los Angeles90031
Apr 17, 2023Other building workCity of Los Angeles90031
Mar 20, 2023HVACCity of Los Angeles90011
Mar 7, 2023HVACCity of Los Angeles90035
Feb 23, 2023ElectricalCity of Los Angeles91311
Feb 8, 2023Other building workCity of Los Angeles90028
Feb 7, 2023RoofingCity of Los Angeles91311
Jan 24, 2023HVACCity of Los Angeles90026
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
57
Anaheim
6

Top ZIP codes

  • ZIP 9007115
  • ZIP 913116
  • ZIP 902924
  • ZIP 900314
  • ZIP 900153
  • ZIP 900283
  • ZIP 900253
  • ZIP 900362
Area is where permits were issued, not the office address

License, bond & insurance

California Contractors State License Board
  • CSLB license#609967 · Active
  • Business typeLimited Liability
  • Issued · expiresJan 19, 1991 · Feb 28, 2027
  • OfficeAnaheim, CA 92806
  • CSLB record updatedJun 2, 2026
  • Contractor bond$25,000 · since Feb 3, 2023
  • Bond companyHarco National Insurance Company
  • Workers' compensationWorkers' Compensation Insurance · until Apr 1, 2027
  • InsurerXl Insurance America Inc

License classes

B General BuildingC-10 ElectricalC-20 HVACC-38 Refrigeration
Always confirm a license on cslb.ca.gov before signingCheck another license

About the company

diversifiedthermalservices.com

Services

CommercialHVAC
  • Founded1990
  • Websitediversifiedthermalservices.com
From the company's own website, checked Oct 8, 2026. Claims are the company's; we show where each came from.
Facts with links to the page they came from

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Questions & answers

Is Diversified Thermal Services LLC licensed?
CSLB license #609967 is active, issued Jan 19, 1991 and valid through Feb 28, 2027, with classes B, C-10, C-20, C-38.
Is Diversified Thermal Services LLC insured and bonded?
CSLB lists workers' compensation insurance with Xl Insurance America Inc until Apr 1, 2027 and a $25,000 contractor bond with Harco National Insurance Company.
How many jobs has Diversified Thermal Services LLC done?
Building permits name the company on 63 jobs, including 28 hvac, 17 other building work, 12 electrical.
Where does Diversified Thermal Services LLC work?
Most permits are in City of Los Angeles, City of Anaheim.

Sources

  1. Contractors State License Board — license, bond and workers' comp records (Jun 2, 2026).
  2. Building permits — City of Los Angeles, City of Anaheim.
  3. Company website — diversifiedthermalservices.com (checked Oct 8, 2026).
Answers use only the facts on this pageIs this your business? Update listing