Commercial construction,built right.
Gilco Construction Company LLC is a licensed commercial general contractor based in Harahan, Louisiana. We cover heavy and municipal construction, the plumbing, mechanical and electrical trades, fire protection, and metal buildings.
What we build.
Our licenses cover the whole job, so one contractor can carry it from sitework through the building trades to final inspection.
Metal Buildings
We estimate it, supply the steel, pour the slab and build it. That covers shops, barndominiums, warehouses and barns across Southeast Louisiana.
See metal buildings →Commercial Construction
Ground-up builds, additions and interior renovations for commercial, healthcare and education clients.
LA Commercial #62878Heavy & Civil
Highway, streets and bridges, plus heavy construction and sitework.
Highway, Streets & Bridges · HeavyMunicipal & Public Works
Public projects for parishes, cities and agencies, built to spec and on schedule.
Municipal & Public WorksPlumbing & Gas
Commercial plumbing and gas systems installed by our own master-licensed team.
Master Plumber #7376 · Master Gas #LMNGF7799Mechanical & Electrical
HVAC and electrical work, self-performed and coordinated under one contract.
Mechanical · Electrical #62878Fire & Life Safety
Fire alarms, fire sprinklers, fire suppression and life-safety systems.
Specialty: Fire & Life SafetyOne contractor. Every trade.
Most jobs need a general contractor plus a handful of licensed subs. Gilco holds the commercial license and the trade licenses, so you get fewer hand-offs, one schedule and one team responsible for it.
We're based in Harahan and work across Southeast Louisiana.
Let's talk about your project.
Have a bid package, a set of plans or just an idea? Call or email and we'll get back to you the same day.