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Service 04 / 11

Garage Conversion

From garage to living space. Done right.

Real Deal Builders converts garages into legal, permitted living space designed around how you want to use it, from full ADUs and junior ADUs to bedroom suites, home offices, and gyms.

A successful conversion takes more than finishes. We account for what makes the space livable: floor leveling, insulation, heating and cooling, electrical, plumbing, natural light, egress, and code requirements.

From permits and plan review through framing, utilities, insulation, drywall, flooring, and final finishes, we coordinate the whole project on one schedule, with our own crews on site.

The result is a space that feels like it was designed as part of your home, not converted from a garage.

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Design rendering of a garage converted into a bright family room, with three windows where the garage door opening was, oak plank flooring and white shelving
Design rendering

Garage conversion

At a Glance

Timeline
We plan 6 to 12 weeks of building, after approval
Trades we manage
Framing, insulation, electrical, plumbing, HVAC, drywall, flooring, finishes
Permits
Always required, with inspections we coordinate
Typical scope
Home office or bedroom to junior ADU or full ADU

The Process

What it takes to create legal living space

A garage is built differently from a habitable room

Closing that gap is most of the job. We work through the requirements that make the space safe, comfortable, and code compliant: leveling the floor, meeting ceiling height, insulating and finishing walls and ceilings, getting real heating and cooling to the room, and coordinating the electrical and plumbing upgrades it needs. Ceiling height is the one that often changes a plan, because raising the floor takes some of it away.

For a bedroom, we plan for the required egress, natural light, and ventilation. Where part of the space stays a garage, the required fire separation stays with it.

These are the details that separate living space from a garage with drywall on it, and they decide whether the finished room counts as legal square footage or turns into a problem at resale.

Choose the space that fits your goals

Depending on your property and your city, a garage can become a full ADU, a junior ADU, a bedroom, an office, a gym, or simply more living space.

A full ADU can have its own kitchen, bathroom, and entrance. A junior ADU is a more compact answer inside the existing footprint. An office, bedroom, or flex room adds usable space without a full ADU build out.

Before construction begins we go through your lot, zoning, setbacks, parking, utilities, and permit path to find out what is actually possible. Done properly, a conversion is legal, permitted and adds real value to the house.

Garage conversion code requirements, section view Section through a converted garage showing a raised level floor over the sloped slab, seven foot minimum ceiling height, an egress window with a sill height limit, new wall and ceiling insulation, a ductless mini split, the garage door opening framed into a finished wall, and fire separation at the house. Garage conversion, section Seven key changes that make it living space 7 feet minimum finished ceiling height Sill 44 in max above the floor 1 2 3 4 5 6 7 House Existing slab pitches toward the door opening 1 · Level the floor Slabs pitch to the door. New floor is raised flat. 2 · Meet ceiling height requirements Habitable space needs 7 feet finished, minimum. 3 · Provide proper egress 5.7 sq ft net clear opening in a sleeping room. 24 in min height, 20 in min width. Sill no higher than 44 in above the floor. 4 · Insulate the space Garage walls and ceilings are bare. Both get filled. 5 · Add heating & cooling Extend the ducts or add a ductless mini split. 6 · Transform the garage opening The opening becomes a wall with a window or slider. 7 · Maintain required fire separation Any garage left over keeps its rated wall and door. The finishes are only the beginning. It is the work behind the walls that makes a garage truly livable.
Scroll or swipe to see the full diagram. What has to change to make a garage legal living space. A garage conversion is a code compliance project as much as a finish project. The floor has to be raised and leveled, the ceiling has to clear seven feet, a sleeping room needs a real egress window, and insulation, heat, and fire separation all have to be brought up to habitable standard before the drywall goes on. Sources: 2025 California Residential Code, Title 24 Part 2.5, section R313.1, ceiling height, effective 1 January 2026. Section R319.2.1, emergency escape opening size

Built for living. Built to code.

  • Full ADU conversions: kitchen, bathroom, living area, and a private entrance
  • Junior ADUs: a compact living space inside the existing footprint
  • Additional living space: bedrooms, offices, gyms, studios, and media rooms
  • Floor leveling: the sloped slab raised flat to meet the house
  • Insulation and climate control: walls and ceilings filled, then ducted air or a dedicated mini split
  • Egress and natural light: windows sized to code for a sleeping room
  • Garage door conversion: the opening framed into a finished wall, window, or slider
  • Electrical upgrades: new circuits, outlets, lighting, and subpanel capacity as required
  • Fire separation: kept wherever part of the garage stays a garage
  • Permits and inspections: application, plan check, corrections, and inspection scheduling, managed through approval

For reference

Garage Conversion in pictures

Design rendering of a stucco house front where the old garage opening is filled in with matching stucco and two windows, and the driveway is shortened with planting
Design rendering

From first call to final walkthrough

A clear process. A better experience.

  1. 01

    Site Consultation

    We visit your home or property, listen to your goals, assess the space, and establish the scope of work.

  2. 02

    Detailed Proposal

    You receive a written scope and a fixed price before any construction begins.

  3. 03

    Expert Coordination

    We coordinate every trade and phase in the proper sequence, with one dedicated point of contact keeping the project moving.

  4. 04

    Final Walkthrough

    We review the completed work with you, address any final details, and make sure everything meets the Real Deal standard before we close the project.

Cities we serve

Real Deal Builders delivers this service across the twenty cities we serve, from the Santa Clarita Valley into the San Fernando Valley. These pages cover the work city by city.

FAQ

Common questions

The questions we hear most often, answered plainly. If your question is not here, call us and we will answer it the same way.

Can I convert my garage into an ADU?

Usually yes. California has made garage conversions to accessory dwelling units far easier than they used to be, and a garage is a common and cost effective way to add an ADU because the foundation, walls, and roof already exist. We confirm what your specific lot and city allow before we design anything.

What is the difference between an ADU and a junior ADU?

A full ADU is an independent dwelling with its own kitchen, bathroom, and entrance. A junior ADU is smaller, created within the existing footprint of the home, and can have an efficiency kitchen rather than a full one. Junior ADUs often carry a lighter permit path and lower cost, but they are also more limited in what they can be used for.

Does a garage conversion need a permit?

Yes. Converting a garage to living space always needs a permit, and doing it without one creates real trouble at resale, at refinance, and with insurance. Unpermitted converted space also does not count toward your legal square footage. We handle the permit and the inspections as part of the job.

Why does the floor have to be raised?

A garage slab is poured with a slope toward the door so water drains out. A room you live in needs a level floor that meets the height of the rest of the house. That usually means building a raised subfloor over the slab, which also gives us a place to run insulation and utilities.

Is my garage ceiling tall enough?

Habitable rooms have a minimum ceiling height under code. Many garages clear it comfortably, but some, especially where the floor has to be raised, end up tight. We measure before we design, because ceiling height is the constraint most likely to change the plan.

Do I need an egress window?

If the room will be used for sleeping, yes. Code requires a window with a minimum net clear opening, a minimum width and height, and a sill within a set distance of the floor, so a person can get out and a firefighter can get in. Rooms that are not bedrooms have lighter requirements.

What happens to the garage door?

It comes out. We frame the opening into a finished wall, and depending on the design that wall gets a window, a slider, French doors, or an entry door. Detailing that wall so it matches the rest of the house from the street is what keeps the conversion from looking like a converted garage.

Do I lose required parking?

It depends on your city and on whether the conversion is an ADU. State ADU law has removed replacement parking requirements in many situations, but the rules are not identical everywhere. We check your specific case before we design, because parking is one of the more common reasons a plan has to change.

How long does a garage conversion take?

Plan on several months once you count the permit and plan check window. The construction itself commonly runs six to twelve weeks depending on whether it includes a kitchen and bathroom. The permit stage is usually the longest and least predictable phase.

How much does a garage conversion cost?

Cost is driven mostly by whether you are adding a kitchen and a bathroom, since plumbing is the expensive part. A conversion to an office or a bedroom is far less than a full ADU conversion. We price against a specific written scope once the design is real rather than guessed at.

Will a garage conversion add value to my home?

Converted space that is permitted and legal counts toward your livable square footage, and an ADU can generate rental income on top of that. Unpermitted converted space does the opposite, because a buyer, an appraiser, and a lender will all treat it as a liability. The permit is what makes it an asset.

Planning a project like this?