San Clemente’s Spanish-style architecture — white stucco, red tile roofs, arched windows — gives the city a character most coastal towns would envy. But behind those timeless facades, a lot of homes are running on original mid-century plumbing, aging sewer lines, and HVAC systems that have been breathing salt air for decades. Renovating here takes a contractor who respects the architecture and can still modernize everything behind the walls.
That’s where a multi-trade general contractor earns its keep. A San Clemente remodel that updates a kitchen, adds a bath, and replaces an aging HVAC system crosses three trades — and if those trades work for three different companies, the project slows down every time their schedules collide. Mars Construction Industries Corp holds four CSLB classifications in-house — A (General Engineering), B (General Building), C-36 (Plumbing), and C-20 (HVAC) — so one accountable team handles the structure, the pipes, and the air.
Construction & Remodeling Services in San Clemente, CA
Our remodeling work in San Clemente is built around the city’s housing stock: Spanish-style homes, mid-century ranches, and the newer planned communities on the inland side. We do kitchen and bath renovations that keep the home’s character intact while replacing what’s worn out — new plumbing, modern electrical coordination, and HVAC upgrades sized for the home. For growing families, we build room additions and second stories that match the existing architecture instead of looking bolted on.
The coastal environment shapes our mechanical recommendations. Salt air shortens the life of condensers, water heaters, and exterior plumbing, so when we replace equipment we discuss placement and protection that help it last. Many San Clemente homes also sit on original sewer laterals; our 911 Drain Lines division camera-inspects lines, clears them with hydro jetting, and repairs them trenchlessly where possible — our sewer lining carries a 20-year warranty.
ADUs are a strong fit for San Clemente’s larger lots and multigenerational households. Through ADU Cities, our sister brand, we’ve delivered more than 100 accessory dwelling units in four years — detached backyard cottages, garage conversions, and attached units, built start to finish by the same team.
- Kitchen and bathroom remodels that respect Spanish and mid-century architecture
- Room additions and second stories matched to the existing home
- Whole-home renovations of aging coastal properties
- ADUs, garage conversions, and backyard cottages via ADU Cities
- Repipes and plumbing system upgrades
- Sewer inspection, hydro jetting, and trenchless repair with a 20-year lining warranty
- HVAC replacement and repair with coastal-environment planning
- Water heaters, gas lines, and fixture upgrades
Why San Clemente Property Owners Choose Mars
San Clemente homeowners tend to stay put — they renovate the home they love rather than moving. That long view is exactly how we work:
Mars Construction Industries Corp is a general contractor backed by 30+ years of hands-on experience, based in Orange, California. We are licensed, bonded, and insured, holding four CSLB classifications in-house under license #1138550: A (General Engineering), B (General Building), C-36 (Plumbing), and C-20 (HVAC). We are also SB-PW and SB(Micro) certified.
That means one accountable team. Most projects cross trades, and that is where jobs stall — the plumber blames the framer, and you are left managing people who do not work for you. With Mars, the general contractor, the plumbing crew, and the HVAC crew are the same company: one estimate, one schedule, one phone number, and no gaps between trades.
Proudly Serving San Clemente and Orange County
San Clemente sits in Orange County, and we serve it regularly from our Orange County home base. We’re based just up the coast in Orange, so San Clemente is solidly in our home territory — we serve all of Orange County plus surrounding areas of Los Angeles County and the Inland Empire.
Frequently Asked Questions
Is Mars Construction Industries Corp licensed for this work?
Yes. We operate under CSLB license #1138550 with four classifications in-house: A (General Engineering), B (General Building), C-36 (Plumbing), and C-20 (HVAC). We are licensed, bonded, and insured, and we hold SB-PW and SB(Micro) small-business certifications. You can verify any contractor’s license status through the Contractors State License Board before you sign anything — and you should.
Will a remodel change the character of my Spanish-style home?
It doesn’t have to. We regularly renovate Spanish-style and mid-century homes, and we take care to match rooflines, stucco texture, and architectural details on additions so the new work reads as original. The modernization happens where it counts — plumbing, HVAC, layout, and kitchens and baths.
How do I know if my sewer line needs attention?
Recurring drain backups, gurgling fixtures, soggy spots in the yard, or a home with an original clay or cast-iron lateral are all worth a camera inspection. We run a camera through the line and show you the footage, so any recommendation is based on what we can all see — not a guess. If lining or replacement is needed, our sewer lining carries a 20-year warranty.
Do you subcontract everything out?
No. We self-perform across our four licensed classifications — general construction, plumbing, drain and sewer, and HVAC — which covers the bulk of most residential and commercial projects. For work outside our classifications, such as electrical, we coordinate properly licensed subcontractors and stay accountable for their work as your general contractor. You still deal with one team.
Get a Straight Answer on Your Project
Planning a remodel, an addition, an ADU, or just need a straight answer about a plumbing or HVAC problem? Talk to a contractor that can do it all. Call Mars Construction Industries Corp at 310.880.9718 or email brett@marsx.construction for a walkthrough and a written proposal. One team, four licenses, and an answer you can build on.
Plumbing or drain emergency? Our sister brand 911 Drain Lines answers around the clock at 714.746.7611.