Building What Matters Across Southern California.
Kitchens where families gather. Backyard homes that keep generations close. Restaurants that anchor their neighborhoods — and the drains, sewers, and systems nobody thinks about until they fail. We build and repair what Southern California runs on, backed by 30+ years of hands-on experience.
Dampproofing vs. Waterproofing — Done Right.
Our crew installing a full membrane + drainage system on a new home build in Altadena.
The Work We're Known For.
A look at what we build, fix, and keep running — every trade handled by our own licensed crews, under one roof, on one schedule.
Residential Remodeling
Kitchens, baths, room additions, and whole-home remodels — with the plumbing and HVAC inside the walls done by our own people, not handed off and hoped for.
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ADU'S
Accessory dwelling units designed, permitted, and built — garage conversions, attached units, detached backyard homes, and second-story builds.
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Drain & Sewer
This is where we built our name. Camera inspections, hydro jetting, trenchless repair, and sewer lining backed by a 20-year warranty. When drains go wrong, we come along.
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Commercial & Tenant Improvement
Retail, restaurant, office, and multi-family work. Multiple trades under a single contract — one schedule, one point of accountability.
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HVAC
Heating and air conditioning sized to the house, not the sales quota — installed by licensed C-20 technicians who service what they install.
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Plumbing
Repairs, repipes, water heaters, and gas lines by licensed C-36 plumbers — with 24/7 emergency response through 911 Drain Lines.
Learn More →One Accountable Team.
Most projects stall in the gaps between trades — the plumber waiting on the framer, the HVAC crew waiting on the electrician, the homeowner stuck in the middle making phone calls. We hold the A, B, C-36, and C-20 licenses ourselves, so the handoffs happen inside one company.
- One schedule, one supervisor, one accountable team
- Four CSLB classifications held in-house
- One phone number that reaches someone who can move the work
Walk Through a Mars Kitchen.
Real projects, real crews. Take a walk through a recent kitchen remodel — white shaker cabinetry, a marble island, and the kind of finish work we're known for.
One Company. Nine Specialties.
Each specialty does one thing exceptionally well — and together, they cover nearly everything a property needs.
911 Drain Lines
24/7 drain and plumbing emergency service. When drains go wrong, we come along.
911drainlines.com →Mars Civil
Class A general engineering — underground utilities, trenching, slurry backfill, concrete, and public works.marscivil.com →
ADU Cities
Accessory dwelling units, designed, permitted, and built in-house across Southern California.
aducities.com →Get Your Roof Certified
NRCIA roof certification that keeps real estate transactions moving.
getyourroofcertified.com →Mars Roofers
Roof repair and replacement — tear-off and re-roof by our own roofing crews.
marsroofers.com →Universal Inspect
Property inspections that keep deals moving — residential, commercial, and specialty.
universalinspect.com →411 Mold Expert
Mold inspection and remediation — find it, test it, remove it, done right.
411moldexpert.com →Remodel My Kitchen or Bath
Kitchen and bathroom remodeling — design through final walkthrough, all in-house.
remodelmykitchenorbath.com →Proudly Serving Southern California.
From our home base in Orange, California, our crews work across Los Angeles, Orange, Riverside, San Bernardino, San Diego, and Ventura counties.
See Service Area