Hawthorne is south bay urban energy — the SpaceX corridor driving a new wave of commercial activity, surrounded by dense neighborhoods of older homes, apartments, and small multifamily buildings. It’s a city where a contractor needs urban reflexes: tight lots, working-class housing stock needing honest systems work, and commercial spaces turning over fast as the area grows.
Mars Construction Industries Corp has the range for both sides of Hawthorne. With 30+ years of hands-on experience we’ve held four CSLB licenses in-house — A General Engineering, B General Building, C-36 Plumbing, C-20 HVAC (Lic. #1138550) — so the apartment building repipe, the office TI near the aerospace corridor, the single-family remodel, and the restaurant build-out all come from one licensed, bonded, and insured team. One estimate, one project manager, crews that know dense urban conditions.
Construction & Remodeling Services in Hawthorne, CA
Hawthorne’s commercial momentum is real, and our TI division is built for it: office build-outs, retail interiors, restaurant projects where the schedule is the product. Our C-36 plumbers handle restroom rough-in, kitchen plumbing, and gas lines in-house; our C-20 crews handle the HVAC modifications. Both trades ours means the mechanical scopes stay on our schedule — with the bonding and insurance commercial landlords require. The residential and multifamily stock needs the fundamentals: whole-building repipes for aging supply systems, sewer camera inspections for generations-old laterals, and trenchless lining with our 20-year warranty where excavation isn’t practical on tight urban lots.
For single-family homeowners, the full residential range: kitchen and bath remodels, additions under our A and B licenses, ADUs — 100+ built in four years through ADU Cities — and honest HVAC repair-or-replace assessments from our C-20 crews. And 911 Drain Lines provides 24/7 emergency response at 714.746.7611 — a genuine necessity in dense multifamily housing.
- Commercial and office TI — build-outs near the aerospace corridor with in-house mechanical and plumbing.
- Restaurant build-outs — kitchen plumbing, gas lines, and HVAC by our own licensed crews.
- Multifamily repipes and renovations — whole-building plumbing renewal and unit-turn renovations.
- Sewer camera inspection and trenchless lining — diagnose and renew urban laterals; 20-year warranty.
- Kitchen and bath remodels — full residential renovations, all trades in-house.
- ADUs and garage conversions — via our ADU Cities team.
- HVAC install, replacement, and repair — C-20 crews for homes, apartments, and commercial spaces.
Why Hawthorne Property Owners Choose Mars
Most projects don’t fail because of one bad trade — they fail in the gaps between trades. Mars Construction Industries Corp was built to eliminate those gaps. We hold four CSLB licenses in-house — A General Engineering, B General Building, C-36 Plumbing, C-20 HVAC (Lic. #1138550) — so the engineering, building, plumbing, and mechanical work on your project all answer to one accountable team.
One estimate covers the whole scope. One project manager runs the schedule. And when something unexpected turns up behind a wall in Hawthorne, our plumber and our carpenter already work for the same company — work doesn’t stall while you hunt for another contractor.
With 30+ years of hands-on experience and based in Orange, California, we’re licensed, bonded, and insured, with SB-PW and SB(Micro) certifications. Our sister brands — 911 Drain Lines, ADU Cities, Get Your Roof Certified, Universal Inspect — cover a property’s full life, and our trenchless sewer lining carries a 20-year warranty. One call, one team, one throat to choke.
Proudly Serving Hawthorne and Los Angeles County
Hawthorne sits in LA County’s south bay, within our roughly 50-mile radius from Orange County — our crews run the 405 corridor constantly. From the aerospace corridor’s commercial spaces to the dense residential neighborhoods, Hawthorne gets the same four-license team and the same urban job-site discipline. Call 310.880.9718 or email brett@marsx.construction.
Frequently Asked Questions
Do you offer emergency service?
Yes. 911 Drain Lines runs 24/7 for drain and plumbing emergencies at 714.746.7611. For urgent construction issues, call 310.880.9718 and we’ll get the right crew moving.
Will I deal with several contractors?
No — that’s the point of hiring us. One project manager, one schedule, one company accountable for the finished work. Most projects never need an outside trade; when they do, we coordinate them.
Are you licensed to do this work?
Yes. Mars Construction Industries Corp holds CSLB #1138550 — A General Engineering, B General Building, C-36 Plumbing, and C-20 HVAC. We’re licensed, bonded, and insured, with SB-PW and SB(Micro) certifications. Verify any California contractor at cslb.ca.gov — we encourage it.
We own a small apartment building. Can you handle both the units and the building systems?
Yes — multifamily is a core segment for us. Unit-turn renovations, whole-building repipes, common-area plumbing, water heater replacements, and sewer lateral work, all with our own licensed crews. And 911 Drain Lines gives your building 24/7 emergency plumbing coverage at 714.746.7611. One contractor for capital improvements and emergencies.
Get a Straight Answer on Your Project
Remodel, addition, repipe, new HVAC, or commercial build-out in Hawthorne — talk to the contractor who can do all of it. Call Mars Construction Industries Corp at 310.880.9718 or email brett@marsx.construction. We’ll give you a straight assessment and a detailed written estimate. Our office: 1119 W. Collins Ave, Orange, CA 92867.
One accountable team. Four licenses. With 30+ years of hands-on experience. That’s Mars.