Garage Conversions · Santa Monica
Garage Conversions in Santa Monica, CA
Convert an alley garage or attached garage in Santa Monica into a legal ADU, junior ADU or studio, with the structural repairs, insulation and approvals an older coastal garage needs.
- Licensed California general contractor
- Permits with the City of Santa Monica
- Written, line-item estimates
- Design, engineering & construction
Santa Monica, CA
Garage Conversions for Santa Monica Homeowners
Our garage conversions in Santa Monica turn detached alley garages and attached garages into permitted ADUs, junior ADUs and studios. We evaluate the existing structure, design the space, manage the city approvals and build it to a standard that matches the main house.
Garage conversions here are shaped by age. Many Santa Monica garages are decades old, and what looks like a solid building can have a thin slab, undersized framing or no real foundation. We assess the structure honestly before design so you know whether converting or rebuilding in place is the better investment.
Local Knowledge
Converting Santa Monica Garages
The classic Santa Monica conversion is a detached garage at the rear of the lot, facing an alley. Many blocks north of Montana and in Sunset Park have them. Once converted, the unit can take a private entrance from the alley side or the yard, which suits a rental, a studio or a home office that feels separate from the house.
State law does not require replacement parking when a garage becomes an ADU, which matters in a city where street parking is tight and preferential parking zones are common. The ADU route carries that relief; converting the garage into ordinary living space for the main house does not, so the intended use needs to be settled first.
Coastal and historic status can still apply to a conversion. A garage on a property in the Coastal Zone or in a historic district may need additional review, particularly if the exterior changes. We check both at the start and design the new doors, windows and finishes accordingly.
What's Included
Converting an Alley Garage: The Scope
- Structural assessment of the existing garage, including slab, framing and foundation
- Design for an ADU, junior ADU or studio fitted to the garage footprint and height
- City of Santa Monica permits, with coastal or historic review where the property requires it
- Foundation repair or replacement, new framing and a raised or insulated floor as needed
- Insulation, windows and exterior finishes that withstand coastal moisture and salt air
- Plumbing, sewer connection, electrical service and a compact heating and cooling system
- Egress windows or doors meeting code for any sleeping room
For the full scope, process and options, see our main garage conversions page, or browse everything we build on our Santa Monica service area page.
Planning Considerations
Before You Convert an Older Garage
Convert or Rebuild
If the existing garage is too short, lacks a real foundation or sits in an awkward spot, rebuilding it as a new ADU can come close in cost to a full conversion and delivers a better unit. We compare the two with rough scopes, including how each affects setbacks and height, and give you a clear recommendation rather than a sales pitch.
Moisture Near the Coast
Older garages near the ocean were never built to keep moisture out, and converted spaces can suffer from damp slabs, musty air and condensation on cold surfaces. We add vapor protection at the floor, insulate and air-seal the walls and ceiling, and provide ventilation sized for the room so the space stays dry and comfortable in every season.
Why Choose Us
Why Santa Monica Homeowners Choose Simply Construction
Licensed, Bonded and Easy to Verify
Simply Construction inc. is a licensed California general contractor, CSLB [CSLB LICENSE # PLACEHOLDER]. State law requires a license for any job of $1,000 or more in labor and materials, and anyone can check a contractor's license, bond and workers' compensation status on the CSLB website in about a minute. We encourage every Santa Monica homeowner to do exactly that before signing with anyone, including us.
Straight Answers on Feasibility
Some lots cannot fit the project an owner has in mind. We check zoning, setbacks, height limits, easements, slope and utility capacity early, and we tell you plainly what is achievable before you spend money on full drawings. When state law opens a path that the local code seems to block, as ADU and SB 9 rules often do, we explain how it applies to your property.
Care for Your Street and Your Neighbors
Large projects happen next door to people who live there. We plan staging, dumpster placement, deliveries and working hours around Santa Monica rules, keep the site secured at the end of each day, and give you notice before loud or disruptive phases such as demolition, concrete pours or crane lifts, so you can give your neighbors a heads-up too.
More in Santa Monica
Other Services in Santa Monica
Nearby
Garage Conversions Near Santa Monica
FAQ
Garage Conversions in Santa Monica: Common Questions
Does converting my Santa Monica garage mean giving up required parking?
When the garage becomes an ADU, no replacement space is needed, because state law removes the replacement parking requirement for garage-to-ADU conversions. If the garage becomes an extension of the main house instead, the city's parking rules for the home still apply, so we settle the approach during feasibility before anything is drawn.
Can a junior ADU go in my attached garage?
Yes, if the garage is attached to the house. A junior ADU can be up to 500 square feet, must sit within the walls of the home, which includes an attached garage, needs at least an efficiency kitchen, and requires the owner to live in either the main home or the junior unit.
Will my alley garage conversion need a coastal permit?
It might. If the property is in the Coastal Zone, the city may require coastal review, especially when the exterior or use changes. We check the lot's status first and plan for that review so it runs alongside the building permit rather than after it, which keeps the schedule predictable.
Start Your Project
Planning a Garage Conversion in Santa Monica?
Tell us about your property and goals. We will walk the site, flag anything the City of Santa Monica will care about, and give you a written, line-item estimate.
Licensed California General Contractor · CSLB [CSLB LICENSE # PLACEHOLDER]