Hermosa Beach packs a lot of living into small lots — original beach cottages shoulder to shoulder with sleek modern rebuilds, all of it within a few blocks of the sand. That density is exactly why a multi-trade general contractor matters here: when your project involves a tight lot, an older cottage, and plans that touch plumbing, HVAC, and structure all at once, you need one team that can handle every piece instead of three contractors tripping over each other.
Salt air is hard on everything it touches — exterior plumbing, HVAC condensers, and water heaters age faster near the ocean. Mars Construction Industries Corp brings four licenses in-house — A (General Engineering), B (General Building), C-36 (Plumbing), and C-20 (HVAC) — so the crew opening your walls is the same crew replacing what’s inside them.
Construction & Remodeling Services in Hermosa Beach, CA
Whole-home remodels are our bread and butter in Hermosa Beach, especially on the classic beach cottages that make up so much of the city’s housing stock. We take homes with chopped-up floor plans, original bathrooms, and tired kitchens and rebuild them into open, light-filled spaces — new plumbing throughout, right-sized HVAC, and structural work handled under our A and B classifications. Because the lots are small, we plan carefully for staging and access so the project moves instead of stalling.
For owners of newer or recently rebuilt homes, we handle the finish-level work that makes a modern beach house actually livable: kitchen and bath renovations, outdoor living upgrades, and HVAC improvements that deal with the marine layer’s damp mornings and the salt air’s toll on equipment. And with buildable lots at a premium, ADUs are a natural fit here — through our sister brand ADU Cities we’ve delivered more than 100 accessory dwelling units in four years, including garage conversions that turn underused space into rental income or room for family.
Below the surface, our 911 Drain Lines division handles the problems beach-city plumbing is known for: aging sewer laterals, root intrusion, and corroded lines. We camera-inspect first so you see what we see, then repair with traditional or trenchless methods — our sewer lining carries a 20-year warranty.
- Whole-home remodels for beach cottages and modern rebuilds
- Kitchen and bathroom renovations, from refresh to full gut
- Room additions and second stories on small lots
- ADUs and garage conversions via ADU Cities (100+ built in four years)
- Repipes and plumbing upgrades for aging galvanized and cast-iron systems
- Sewer camera inspection, hydro jetting, and trenchless repair with a 20-year lining warranty
- HVAC install, replacement, and repair — including salt-air equipment considerations
- Water heaters and gas lines, repaired or replaced
Why Hermosa Beach Property Owners Choose Mars
On a small Hermosa Beach lot, there’s no room for finger-pointing between trades. Here’s why property owners here hand the whole project to one team:
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 Hermosa Beach and Los Angeles County
Hermosa Beach sits in Los Angeles County, and we serve it regularly from our Orange County home base. We work throughout the South Bay — from the walk streets to the hillside homes above Pacific Coast Highway — and across Los Angeles County.
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.
Our beach cottage sits on a small lot. Can you still do a major remodel or addition?
Yes — small-lot projects are common in Hermosa Beach, and we plan for them from the start: staging, material delivery, and neighbor access all get worked out before demolition begins. Because we self-perform construction, plumbing, and HVAC, we don’t need three different crews’ trucks competing for the same tight space on the same day.
Does the salt air really affect my home’s systems?
It does. Salt air accelerates corrosion on exterior HVAC equipment, exposed plumbing, and water heaters, shortening their service life compared to inland homes. When we replace equipment near the coast, we talk through placement and protection options with you so the new system lasts as long as it should.
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.