Garage Conversion in California
Stop wasting your most valuable space. We design and permit garage conversions across California—from ADU garage conversions and bedroom additions to home offices and studios. Drafting, site plans, and permit processing handled start to finish.
- 10+ Years Experience
- All California Cities
- Full Permit Processing
Why Convert Your Garage in California?
Your garage is the most underutilized space in your home. A professional garage conversion is the fastest, most affordable way to add permitted living space and increase your property value.
Increase Property Value
A permitted garage conversion can add significant value to your property. ADU garage conversions are especially valuable, adding both square footage and rental income potential to your home’s appraisal.
Fastest Way to Add Space
Garage conversions are significantly faster than building an addition or new construction. The structure already exists—we design the interior transformation and handle all permits to convert your garage to living space.
Generate Rental Income
California’s ADU laws make it easier than ever to convert your garage into a rentable unit. An ADU garage conversion can generate consistent monthly income while the property appreciation builds your long-term wealth.
Why Choose Us for Your Garage Conversion
With 10+ years of experience designing and permitting garage conversions across California, we deliver results that other firms simply cannot match
10+ Years, Zero Legal Issues
A decade of experience means we know exactly what every California city requires. Our garage conversion plans are designed to pass the first time—saving you weeks of costly revisions and resubmissions.
All of California, One Team
From San Diego to Sacramento, we design and permit garage conversions statewide. We know the specific requirements for every California city—zoning codes, setbacks, parking rules, and ADU regulations unique to your area.
Complete Permit Management
We don’t just design—we handle every step of the permit process. City submissions, plan check responses, correction letters, ADA compliance, fire department approvals. You never have to visit city hall or deal with bureaucracy.
We Fix Rejected Plans
Had plans rejected by the city? We specialize in plan corrections. Our team analyzes correction notes from any city, re-designs to meet code, and resubmits until approval. We’ve rescued hundreds of stalled projects across California.
Every Conversion Type, Every Style
ADU, bedroom, office, studio, gym, granny flat—we’ve designed them all, hundreds of times. From beach city styles to urban contemporary, our decade of statewide experience means we adapt to any neighborhood and any vision.
Trusted Contractor Network
While we focus on design and permits, we work hand-in-hand with experienced, vetted contractors who’ve been building our designs for years. Quality construction, fair pricing, and a team that already understands your plans.
California Garage Conversion Experts
California’s garage conversion laws are among the most progressive in the nation—but every city interprets them differently. That’s where our statewide experience becomes your greatest advantage.
California ADU Laws Mastery
We stay current with AB 68, SB 13, AB 881, and every new regulation affecting garage conversions. Our designs comply with state law while navigating your city’s specific requirements.
City-Specific Knowledge
From LA’s strict hillside requirements to Irvine’s HOA-friendly ADU codes, we understand the nuances of every California city’s planning department.
Personalized, Not Cookie-Cutter
Every garage is different, every homeowner’s needs are unique. We create custom designs tailored to your specific garage, property, lifestyle, and city—never generic templates.
End-to-End Service
From your first free consultation through as-built drawings, custom design, permit processing, and contractor coordination—we handle everything so you don’t have to.
What Will Your Garage Become?
Every garage conversion starts with a vision. Whether you want to convert your garage to an ADU for rental income, a bedroom for your growing family, or a home office for your business—we design it and get it permitted.
Garage to ADU
The most popular garage conversion in California. Convert your garage into a fully permitted accessory dwelling unit with kitchen, bathroom, and living space. Generate rental income or house family members.
Garage to Bedroom
Convert your garage into a bedroom or a bedroom and bathroom suite. Perfect for growing families, aging parents, or anyone who needs more living space without the cost of a full addition.
Garage to Office
Create a dedicated, professional home office or workspace. We design garage office conversions with proper lighting, ventilation, electrical, and insulation for year-round productivity.
Garage to Studio
Transform your garage into a creative studio, art space, music room, or guest studio apartment. We design conversions that maximize natural light, acoustics, and functional space.
Garage to Gym
Design your dream home gym with proper flooring, ventilation, mirrors, and electrical for equipment. From basic workout rooms to full-featured fitness spaces with bathroom access.
Garage to Granny Flat
Create a comfortable, independent living space for elderly parents or family members. We design ADA-accessible granny flats with all the features needed for safe, comfortable living.
How Your Garage Conversion Works
We’ve streamlined the garage conversion process over 10+ years and hundreds of projects across California. From your first call to permit approval, we handle everything.
01
Free ADU Consultation
Tell us about your garage, your goals, and your city. We assess your conversion options and provide a clear project scope—no obligation.
02
As-Built & Site Survey
We document your existing garage with precise as-built drawings and create a site plan showing your property layout for city compliance.
03
Custom Drafting Design
We design your garage conversion—floor plans, elevations, sections—tailored to your vision. Every detail optimized for your space and city requirements.
04
Permit Processing
We submit to your city, respond to plan check comments, handle all corrections, and manage the process until your garage conversion permit is approved.
05
Build with Confidence
Take your approved plans to any contractor or use our trusted network of experienced builders who’ve been constructing our designs for years.
Our Garage Conversion Services
From initial design to permit approval, we provide every service you need for a successful garage conversion in California
Single Garage Conversion
A single garage conversion typically provides 200-300 sq ft of living space—ideal for a bedroom, home office, or studio. With smart design, even a single car garage becomes a functional, permitted living space.
- Bedroom or bedroom + bathroom
- Home office or creative studio
- JADU (Junior ADU) up to 500 sq ft
- Home gym or wellness room
2 Car Garage ADU Conversion
A 2 car garage conversion gives you 400-600+ sq ft—enough for a full ADU with kitchen, bathroom, bedroom, and living area. This is the most popular conversion for rental income and multi-generational living.
- Full ADU with kitchen + bathroom
- Master suite conversion
- Studio apartment or granny flat
- Half conversion (keep partial garage)
Our Garage Conversion Services
From initial design to permit approval, we provide every service you need for a successful garage conversion in California
Drafting Design
Custom drafting for your garage conversion—floor plans, elevations, sections, and all construction details. We design every conversion type: ADU, bedroom, office, studio, and more.
- Floor plans
- Elevations
- Sections
- Construction details
As-Built Drawings
Accurate documentation of your existing garage structure. As-built drawings are required before any conversion can be designed or permitted—we measure and document everything.
- Existing conditions
- Measurements
- Structural docs
- Foundation plans
Site Plans
Detailed site plans showing your property, garage location, setbacks, parking, and all elements required by your city for garage conversion permit approval.
- Property layout
- Setback compliance
- Parking plans
- Utility connections
Permit Processing
We handle all permit applications, city submissions, plan check responses, and corrections until your garage conversion permit is approved. No stress, no delays.
- City submissions
- Plan check
- Corrections
- Final approval
Plan Corrections
Have garage conversion plans that didn’t pass? We analyze the correction notes, re-design to meet code, and resubmit until your plans are approved.
- Code analysis
- Re-design
- Corrections
- Re-submission
3D Virtual Tours
Preview your garage conversion before construction. Walk through your future space in realistic 3D and make confident design decisions.
- Interior walkthrough
- Realistic visualization
- Clear space planning
Home Remodeling
Complete design for your garage conversion project, including garage to ADU conversion, garage to bedroom, home office, gym, or studio transformation.
- Full Garage Conversion Design
- ADU & Layout Planning
- Space Optimization
- Material & Construction Specs
Custom Home Design
Expert design for garage conversions and space transformations, including garage to master suite conversion, garage to ADU, home office, gym, or studio.
- Garage Conversion Plans
- Master Suite Integration
- ADU & JADU Layout Design
- Modern & High-End Finishes
Trusted Contractors
We work with experienced, vetted contractors who’ve been building our designs for years. They bring your garage conversion to life exactly as designed—on time and on budget.
- Vetted partners
- Years of trust
- Quality builds
- Design fidelity
What Our Clients Say
Homeowners across California trust us with their garage conversion projects
⭐⭐⭐⭐⭐
“We wanted to convert our 2 car garage into an ADU for rental income. Jean Prescott handled the entire design and permit process—as-built drawings, site plans, drafting, everything. The city approved our plans on the first submission. Now we rent it for $2,100/month.”
Carlos & Maria G. – Anaheim
2 Car Garage ADU Conversion
⭐⭐⭐⭐⭐
“Our garage conversion plans from another company got rejected twice by the city. Jean Prescott reviewed the correction notes, re-designed the plans, and got them approved within weeks. Their plan correction service saved us months of frustration.”
Jennifer T. – Irvine
Garage to Bedroom + Bathroom
⭐⭐⭐⭐⭐
“I needed a professional home office and didn’t want to lose my entire garage. They designed a half garage conversion that gave me a beautiful office while keeping one car space. The permit process was seamless and their contractor finished on time.”
Robert M. – Pasadena
Partial Garage to Office Conversion
Garage Conversion FAQs
Answers to the most common questions about garage conversions in California
How much does a garage conversion cost in California?
Garage conversion costs vary widely depending on the type of conversion, size of your garage, your city’s requirements, and finishes you select. A basic garage to bedroom conversion will differ significantly from a full ADU garage conversion with kitchen and bathroom. Because every project is custom, we provide personalized quotes after understanding your specific needs during a free consultation.
Do I need a permit for a garage conversion in California?
Yes, all garage conversions in California require permits. This includes building permits for structural, electrical, plumbing, and mechanical work. Depending on the conversion type, you may also need planning permits, zoning approval, and multiple inspections. Our team handles all permit processing—from initial submission through plan check corrections to final approval—so your conversion is fully legal and code-compliant.
Can I convert my garage to an ADU in California?
Yes. California’s ADU laws (AB 68, SB 13, AB 881) make it easier than ever to convert your garage into an ADU. In most cases, cities cannot require replacement parking for garage conversions to ADUs. We specialize in ADU garage conversions and handle the complete design, site plans, and all permit processing statewide.
What is the difference between a garage conversion and a JADU?
A JADU (Junior ADU) is a specific type of conversion that is 500 sq ft or less and must be within the existing footprint of your home, including an attached garage. A JADU requires an efficiency kitchen but may share a bathroom with the main house. A standard garage conversion or ADU conversion can include a full kitchen and bathroom. We design both and help you determine which option best suits your property and goals.
Do I need to replace parking if I convert my garage?
In most cases under California law, cities cannot require replacement parking when you convert a garage to an ADU. However, some conversions that are not classified as ADUs (such as converting to a bedroom for the main house) may still require parking solutions depending on your city’s zoning. We analyze your specific situation and city requirements during your free consultation.
Can I convert only half of my garage?
Yes, partial garage conversions are very popular. You can convert half of a 2 car garage into a bedroom, office, or studio while keeping the other half as usable garage space. We design half garage conversions that include proper fire separation, insulation, and all required building elements for a code-compliant conversion.
What if my garage conversion plans were rejected by the city?
We specialize in plan corrections for rejected garage conversion plans. Our team analyzes the city’s correction notes, re-designs the plans to meet all code requirements, and resubmits until approved. Whether the rejection was for structural, zoning, fire safety, or any other issue—we fix it and get your plans approved.
How long does a garage conversion take from design to permit approval?
The timeline depends on your city and project complexity. Design typically takes 2-4 weeks, and permit processing varies by city—some approve in 2-4 weeks, others take 6-8 weeks. We’ve streamlined this process over 10+ years and work proactively with city plan checkers to minimize delays and get your garage conversion approved as quickly as possible.
Have More Questions? Find Answers in Our FAQ Section!
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