Quantum Construction & Design

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HomeAdvisor Screened & Approved

This service professional has passed the HomeAdvisor screening process.

Learn about our screening process
Learn about our screening process

61 Years In Business

Company Details

  • Verified Licenses
  • Bilingual


1218 1/2 Exposition Blvd
Los Angeles, CA 90007


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Service Details

  • Residential Work
  • Commercial Work

Areas of Expertise

  • New Construction
  • Remodels
  • Additions
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Credit Cards Accepted


5 Verified Reviews
  • 5
  • 4
  • 3
  • 2
  • 1
Showing 1-5 of 5 results
1.0 Cesar M. Anaheim, CA

Quantum Roofing took down our roof on a Tuesday. Everything sounded good until the surprise rainstorm came through. I called them and told them itâ s raining and we have nothing covering the roof! He came out the following day and we had water damage in outlets, drywall, insulation, blinds, and walls. At first Willie (the owner) sounded like everything would be good as new once they fixed it. After talking to some of his workers I found out they told him to cover the roof and he chose not to, very disappointing to find out. Then the roofing continued. We ended up getting about 16 punctures into the interior drywall while they were nailing down the new material. 6 of those are still visible after â patchworkâ . The paintwork is shoddy as well. The paint doesnâ t match in my sons room or the living room where most of the damage was. There is loose drywall above the cabinets where there was water damage and I confined it wasnâ t replaced. Lastly I have 6 new cracks in the kitchen drywall where there were no issues before. I would not recommend.

5.0 Katherine A. Orange, CA

Willie, the project manager and his team were very professional. I remodeled my entire bathroom and they helped with the design to give me exactly what l wanted. The bathroom is beautiful and I couldnâ t be happier. The work crew was on time and very clean. I highly recommend their services and would call them back again.

5.0 Jessica R. Los Angeles, CA

I hired Quantum Construction and Design for an ADU garage conversion of 650 sq ft. Willie, Jesus, and his entire crew were professional, hardworking, and did an amazing job. They are honest and provide quality work. We would highly recommend Quantum Construction and Design!

5.0 Bill B. North Hollywood, CA

They did a nice job and they were very quick about it.When I found something that they missed They came right back and fixed it The same day

5.0 Norma C.

He's very good and dependable.

HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information representations set forth in those profiles as they are self-reported by the Service Professional.

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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
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  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
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  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)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

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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