Hart Laboratory, Inc.

4.49 | 43 Verified Ratings
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2669 Braided Mane Dr
Diamond bar, CA 91765
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Hart Laboratory, Inc.

We’re a locally owned and operated company that values honesty and integrity, and stands behind our work. We specialize in both interior testing projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction!


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Service Area

  • Los Angeles
  • Pasadena
  • Anaheim
  • Irvine
  • Santa Ana
  • Orange
  • City of Industry
  • Van Nuys
  • North Hollywood
  • Whittier
  • Fullerton
  • Burbank
  • Laguna Beach
  • Newport Beach
  • Garden Grove
  • Glendale
  • Alhambra
  • Huntington Beach
  • La Puente
  • Pomona
  • El Monte
  • Mission Viejo
  • San Juan Capistrano
  • Buena Park
  • Laguna Hills
  • West Covina
  • Arcadia
  • Yorba Linda
  • Rosemead
  • Brea
  • San Gabriel
  • Lake Forest
  • Covina
  • La Habra
  • Tustin
  • Duarte
  • El Toro
  • Aliso Viejo
  • Fountain Valley
  • San Clemente
  • La Mirada
  • Westminster
  • Laguna Woods
  • Costa Mesa
  • Monterey Park
  • Altadena
  • Downey
  • Placentia
  • Laguna Niguel
  • Montrose
  • Glendora
  • Walnut
  • Sierra Madre
  • Los Alamitos
  • Diamond Bar
  • Cypress
  • Villa Park
  • Monrovia
  • Trabuco Canyon
  • South Pasadena
  • San Marino
  • Dana Point
  • Sherman Oaks
  • Beverly Hills
  • Valley Village
  • San Dimas
  • Seal Beach
  • Hacienda Heights
  • Claremont
  • Tujunga
  • Chino Hills
  • Reseda
  • Temple City
  • Foothill Ranch
  • Artesia
  • Studio City
  • Surfside
  • Pico Rivera
  • Capistrano Beach
  • Midway City
  • Corona del Mar
  • Newport Coast
  • Sunset Beach
  • Ladera Ranch
  • East Irvine
  • Baldwin Park
  • South El Monte
  • Atwood
  • Toluca Lake
  • Verdugo City
  • Azusa
  • La Canada Flintridge
  • La Verne
  • La Crescenta
  • Rowland Heights
  • Rancho Santa Margarita
  • Montebello
  • Stanton
  • La Palma
  • Silverado
  • See All >

Services Offered

Mold & Asbestos Services

Areas of Expertise

  • Asbestos Consulting Certification
  • Mold
  • Air Quality
  • Covid 19 certification

Quick Facts

Business Hours
(Please call to confirm)
  • Commercial
  • Small Jobs Welcome
  • Free Estimates
  • Residential
  • Credit Cards Accepted


In Business Since: 1997
State Licensing
Trade: Asbestos Consultant License
License #: 94-1332
Expiration: 08-05-2021
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Ratings & Reviews
Hart Laboratory, Inc.

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
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Showing 1-10 of 44
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5.0   |  
Review by
Project: Test Indoor Air Quality
Truthful, accurate, and does not take advantage of anybody financially. Ever. She is the only certified laboratory that I refer to all of my clients.
5.0   |  
Review by in Rosemead, CA
She was timely and thorough
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4.0   |  
Review by in Monterey Park, CA
Good service in by mail testing for the presence of mold.
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5.0   |  
Review by in Tustin, CA
Hart Labs was honest, fast and very knowledgeable -- would recommend highly.
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5.0   |  
Review by in North Hills, CA
Very Professional and prompt in getting report
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4.0   |  
Review by in Baldwin Park, CA
Professional- followed up with phone call and then sent me report via mail.
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5.0   |  
Review by in Alhambra, CA
They were great.
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4.0   |  
Review by in San Dimas, CA
They made dropping off the sample easy and painless, and were very communicative the whole time. The only reason I took off one star is because their office hours made it difficult for me to catch them while they were open.
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3.0   |  
Review by in Alhambra, CA
Arrive as expected.
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5.0   |  
Review by in Pasadena, CA
They were perfect in every way! Professional, helpful, quick, and cost-effective. I couldn't have been happier or more pleased that they were able to help with our analysis.
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Showing 1-10 of 44
  Page 1 of 5

Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
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  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
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  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
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NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
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