San Diego County work stretches from the City of San Diego’s older main-replacement programs to the North County cities — Oceanside, Carlsbad, Vista, San Marcos, and Escondido — and down to Chula Vista. It’s a longer haul from our Orange County base, so we take on San Diego County work selectively: well-defined underground scopes for agencies, GCs, and owners who need a Class A contractor that self-performs. We serve San Diego, Oceanside, Escondido, Chula Vista, Carlsbad, Vista, and San Marcos.
Civil & Underground Services in San Diego County
One Class A contractor for the whole underground scope — self-performed by our own crews, from open cut to final restoration.
- Underground Utilities — Complete wet and dry utility installation — pipe, vaults, and conduit — from trench to tie-in.
- Sewer & Water Mains — New mains, replacements, and tie-ins built to agency spec and pressure-tested before backfill.
- Storm Drain — Storm drain pipe, structures, and catch basins that move water where it belongs.
- Trenching & Excavation — Safe, shored, traffic-controlled excavation by our own operators and our own iron.
- Slurry Backfill & Flowable Fill — Flowable fill (CLSM) that self-compacts to spec — no compaction testing, streets reopen sooner.
- Concrete & Street Restoration — Trench paving, curb, gutter, and sidewalk restored to spec after the underground work.
- Grading & Paving — Rough and finish grading, base, and asphalt paving for streets, lots, and utility corridors.
Part of our eight-county Southern California service area — see all locations we serve.
Public Works in San Diego County
Mars Civil bids both public and private work in San Diego County. We are set up for public works the way agencies require it — prevailing-wage crews, certified payroll, and complete bid packages turned around on deadline. For public work in San Diego County we bring the full package — SB-PW and SB(Micro) certification (ID 2046756), prevailing-wage crews, and certified payroll handled in-house.
Mars Civil is a division of Mars Construction Industries Corp — CSLB License #1138550 (A – General Engineering), SB-PW and SB(Micro) certified, Small Business Certification ID 2046756. Our small business certification also helps agencies and prime contractors meet participation goals on public work.
Frequently Asked Questions
Which San Diego County cities does Mars Civil serve?
We serve San Diego, Oceanside, Escondido, Chula Vista, Carlsbad, Vista, and San Marcos. Because we’re based in Orange County, we schedule San Diego work deliberately — call 714.746.7611 with the scope and location and we’ll give you a straight answer on fit and timing.
What license does Mars Civil carry?
Mars Civil is a division of Mars Construction Industries Corp, CSLB License #1138550, Class A – General Engineering — California’s heavy civil classification covering underground utilities, sewer and water systems, storm drain, earthwork, concrete, and paving.
Do you place slurry backfill to local spec?
Yes. Many San Diego-area agencies spec slurry backfill (flowable fill / CLSM) for street trenches, and we place it to the governing city or county standard — it self-compacts, skips compaction testing, and gets pavement restored sooner.
How do I get a bid for a San Diego County project?
Send the plan set through our Request a Bid page or call 714.746.7611. Give us the scope, the location, and your bid date, and we’ll confirm quickly whether the job fits our schedule.
Have plans? Get a number.
Bid requests, plan sets, and project questions — send them over and we’ll respond fast.