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Learn about our screening process

100% Recommended

10 Years In Business

Company Details

  • Verified Licenses
  • Bilingual


See Phone Number
21354 Nordhoff Street, Unit 101
Chatsworth, CA 91311


  • Mon: 8:00 AM - 6:00 PM
  • Tue: 8:00 AM - 6:00 PM
  • Wed: 8:00 AM - 6:00 PM
  • Thu: 8:00 AM - 6:00 PM
  • Fri: 8:00 AM - 6:00 PM
  • Sat: 9:00 AM - 5:00 PM
  • Sun: Closed
View All Details & Credentials


Service Details

    Areas of Expertise

    • Concrete
    • Additions & Remodels
    • Interlocking pavers
    • Artificial turf
    • Hardscape specialists
    View All Offerings and Cities Served

    Cost Information

    • Free Estimates
    • Credit Cards Accepted


    7 Verified Reviews
    • 5
    • 4
    • 3
    • 2
    • 1

    Highly rated for

    • Quality
    • Value
    • Customer Service
    Showing 1-7 of 7 reviews Showing 0 reviews
    5.0 Jill Y. Moorpark, CA

    Concrete job is beautiful. They told us it would take 3-4 days instead if took 2 days, we were surprised and pleased. They did a walkway and front patio, i would definetely recommend them.

    5.0 James B. Simi Valley, CA

    Colossal Builders were great! I had them add an RV driveway and extend the pavers along the side of our house. Mike Mullen was my advisor for the job and he was professional, courteous, and completely understood what I wanted. He added his expertise to finalize the design and was involved through the entire process (not just to get the job and leave it to the crew). He explained the many choices of materials and costs involved and once I decided on Colossal Builders, Mike was able to get a start date start much sooner than any of the other companies I received estimates from. They were hampered by many days of hard rain, but got the job done with no surprises or problems. Their crew (Mark was the crew foreman) knew their business, was prompt and courteous as well. You can't go wrong with these guys!

    5.0 Alex L. Tarzana, CA

    I was a little apprehensive about paving my driveway with concrete, but these guys from colossal were super professional and took the time to explain the entire process. The price was just right and so I hired them and very glad that I did. They did an excellent job!

    5.0 Alex S. Burbank, CA

    They helped me renovate my patio deck with stamped concrete and it looks amazing. Very happy with the work they did. I would definitely recommend them!

    5.0 Michael C. Chatsworth, CA

    Very professional company and people. I'm very pleased with their work. The job was done on time with no delays and no issues. Communication was excellent, from the receptionist to the project manager. Thank you so much for great work!

    5.0 Vlad R.

    The crew was on time, neat, polite and respectful! The end result is beautiful, I've never been happier with a project.


    Colossal Builders

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    Seal of Approval

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    1. Verify Trade License
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    2. Verify Insurance
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    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.
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      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.
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    10. Identity Verification (Reverse Phone Lookup)
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