Service Area

Locations Served

Mars Civil is a Class A general engineering contractor based in Orange, California. From our home yard we field our own crews across eight Southern California counties — Orange, Los Angeles, Riverside, San Bernardino, San Diego, Ventura, Santa Barbara, and Imperial — performing underground utilities, sewer and water mains, storm drain, trenching, slurry backfill, and street restoration for agencies, general contractors, and private owners.

Pick your county below for the cities we serve there, the services we run, and how to get a bid started.

Full street view of a utility trench pour with mixer truck, backhoe, and crew

Eight Counties, One Class A Contractor

Mars Civil crew pouring concrete into a street trench with mixer truck and backhoe on site

Orange County

Home base. Our office and yard are in the City of Orange, with crews working county streets every week.

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Formed footing run with rebar in place, Mars Civil crew working at the far end

Los Angeles County

Dozens of jurisdictions, one standard: mains, storm drain, and street work built to each city’s spec.

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Slurry backfill flowing from the chute into a utility trench

Riverside County

From the Corona growth corridor to Temecula — new development utilities and replacement work in built neighborhoods.

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Crew member guiding concrete from the chute into a street trench

San Bernardino County

West-end cities and the logistics corridor: Ontario, Fontana, Rancho Cucamonga, Chino, and more.

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Compact tractor loader grading inside a mass excavation

San Diego County

City of San Diego main work and the North County cities, taken on for well-defined underground scopes.

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Workers placing concrete into a utility trench cut across a street

Ventura County

Coastal cities, the Oxnard Plain, and the Conejo Valley — the northwestern end of our range.

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Mars Civil crew pumping and screeding a concrete slab over a rebar mat

Santa Barbara County

The South Coast, the Santa Maria Valley, and the Santa Ynez Valley — the northern end of our range.

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Dump truck placing gravel into foundation forms while the Mars Civil crew spreads it

Imperial County

Imperial Valley cities and farm country — municipal mains and drainage work at the eastern end of our range.

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Bid requests, plan sets, and project questions — send them over and we’ll respond fast.