ADU Solutions

Garage Conversion
to ADU

Your garage is already a structure — we transform it into a fully livable, permitted ADU at a fraction of new construction cost.

Convert Unused Garage Space

Your garage is one of the most cost-effective structures to convert. The slab, walls, and roof are already in place — we build out the livable interior.

Full Insulation & Climate Control

We insulate walls, ceiling, and garage door replacement opening to current Title 24 energy standards. Mini-split HVAC systems keep the space comfortable year-round.

Plumbing & Electrical Rough-In

New kitchen or kitchenette plumbing, bathroom rough-in, dedicated electrical panel, and lighting — all installed to code with licensed subcontractors on our team.

Fully Permitted

Garage conversions require building, electrical, and plumbing permits. We handle all submittals, plan checks, and city inspections from start to finish.

Cost-Effective ADU Option

Because the structure exists, garage conversions typically cost 30–50% less than a new detached ADU — making them one of the highest-ROI ADU strategies.

6–12 Week Timeline

Most garage conversions are complete in 6 to 12 weeks from permit approval. We keep you updated weekly with a clear milestone schedule.

At a Glance

Typical Size

400 – 600 sq ft

Typical Cost

Lower than new construction

Timeline

6 – 12 weeks (post-permit)

Permits Required

Building, electrical, plumbing

HOA Check

Required before design

Rental Ready

Yes — separate address eligible

Why a Garage Conversion?

California law has made garage conversions easier than ever. Under AB 2221 and SB 897, most garages can be converted without replacing the parking space, and setback requirements have been relaxed significantly. That means if you have an attached or detached garage, you likely have a viable ADU project already on your property.

Garage conversions are particularly valuable in dense neighborhoods where a new detached structure might be difficult to site. They also tend to move through permit review faster because the footprint is already established.

NASA Construction has completed garage conversions across Los Angeles, Ventura, and surrounding counties. We know the local permit offices, typical plan check timelines, and the most common corrections — so your project doesn't get stuck.

Is Your Garage a Candidate?

Call (818) 836-0199 or submit our form and we'll review your property for free.

Get Free Property Review