The Two-Bay Detached Garage

The Two-Bay Detached Garage

A detached two-bay garage raised from cleared ground, on a monolithic slab with clear-span steel frame and roll-up doors.

Category :

Client Name :

The Mercer Family

Location :

Miramar, Half Moon Bay, California

Total Duration :

5 Months

Twelve hundred square feet of covered workshop, built from bare ground. Site work came first, clearing the pine flatwoods edge, importing and compacting fill to raise the pad above grade, then forming a monolithic slab with turned-down perimeter footings, wire mesh, and anchor bolts set to the building’s column layout. A pre-engineered steel frame followed, sheeted in ribbed panels with a low-slope gable roof and two insulated roll-up doors.

Function set every dimension here. Door width and eave height were sized for vehicles and equipment rather than storage boxes; the clear span keeps the floor free of interior columns, and a walk door plus a slider window give daily access and light without opening the bays.

Raw ground now carries a weathertight structure delivered on the 5-month schedule.

Drainage was decided more than the building was. Excavated material was stockpiled on site, screened, and placed back as compacted fill to raise the pad and shed water away from the slab, with the surrounding grade cut and shaped before backfill. Slab edges were kept high, the apron graded to fall away from the openings, and the perimeter left clear for a concrete approach at the doors.

Placement answered to the existing house. The new garage sits set back from the residence with a clear vehicle path between the two, close enough to share the driveway approach and far enough that neither building crowds the other or interferes with roof drainage.

Handover covered a swept slab, tested door operation, cleared laydown areas, and a documented punch list closed within a week.

Inside This

From conceptualization to final delivery, we provide comprehensive solutions that transform raw potential into refined reality.

What This Build Took

A detached garage is only as good as the ground under it, and none of that work is visible once the doors go on. Three things carried this build.
Pad Preparation and Reused Fill

Pad Preparation and Reused Fill

Excavated material was stockpiled, screened, and placed back as compacted fill to raise the pad above surrounding grade, which is what keeps water out of a slab-on-grade building and what saved the client the cost of importing material.

Slab and Anchor Bolt Tolerance

Slab and Anchor Bolt Tolerance

A pre-engineered frame will not forgive a slab that is out of square or bolts that miss the template, so the pad was formed, checked, and set to the building drawings before the pour rather than shimmed straight afterward.

Erection Sequence and Inspection Timing

Erection Sequence and Inspection Timing

Foundation, anchor bolt, and framing inspections each had to clear before the next stage could proceed, so our crew sequenced clearing, pour, cure, erection, and sheeting around the review calendar instead of waiting on it.

 Frequently Asked Questions

How long does it take to build a detached garage?

This one ran 5 months from site clearing to finished shell. Most ground-up detached garages at this size land between four and six months. Site labor is rarely what holds it up. Permit review, the fabrication and delivery window on the engineered building package, and the inspection sequence between foundation and framing are what move the date.

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