Can I convert my garage into an ADU in Los Angeles?

Yes. California law lets homeowners on single-family lots add an accessory dwelling unit, and converting an existing garage is one of the cleanest paths to one. State law also bars cities from making you replace the parking you lose when the garage becomes living space. The work stays inside the existing footprint, so setbacks that would complicate a new detached build generally do not apply. Los Angeles reviews ADU permits ministerially against objective standards. We walk the garage, check the slab, the header height, and the utility service, then tell you what the structure will actually support.

How much does a garage conversion or ADU cost in LA?

Garage conversion investment depends on what the existing structure gives you and what it withholds. A sound slab, adequate ceiling height, and a nearby panel and sewer line keep the scope at the entry tier. Raising a low roof, pouring a new slab, trenching a sewer lateral, upgrading the main panel, and adding a full kitchen and bath push it toward the premium tier. Detached new construction carries more than a conversion because you build the shell from the ground up. Plans, engineering, permit fees, and utility connections each get their own line in our estimate.

How long does it take to get an ADU permitted and built in Los Angeles?

Plan on a few months for design and permitting, then three to six months of construction for a garage conversion. California requires the permitting agency to approve or deny a complete ADU application within 60 days, so the quality and completeness of the plan set drive that calendar. Structural calculations, Title 24 energy compliance, and utility coordination happen before the clock starts. Detached new construction runs longer than a conversion. We manage the drawings, the plan-check corrections, and every inspection, and we hand you a milestone schedule you can hold us to.

Does an ADU need its own kitchen and bathroom?

A full accessory dwelling unit needs a kitchen, a bathroom, a sleeping area, and its own entrance. A junior unit built inside the existing house allows a smaller efficiency kitchen and can share sanitation with the main home. That difference changes the plumbing scope, the permit path, and the investment. We size the water and sewer lines, confirm the electrical load, and lay the unit out so the kitchen and bath sit near existing lines where the structure allows. Build And Decor Construction holds CSLB license #1113888 as a Class B general builder and runs framing, plumbing, electrical, and finish work under one contract.

How do you scope the investment for an ADU in Los Angeles?

Garage conversions are the most efficient path to an ADU because the shell already exists. Detached new-construction ADUs cover more ground and require full foundation, framing, and utility runs. Site conditions, finishes, and utility hookups shape the scope. You receive a detailed line-item estimate at your consultation.

How long does it take to build an ADU in Los Angeles?

Total timeline is typically 8-14 months: 2-4 months for design and permitting, then 4-8 months for construction. Garage conversions are faster (6-10 months total). LA's streamlined ADU permit process has reduced approval times, but construction timeline depends on scope and complexity.

Do I need a permit for an ADU in Los Angeles?

Yes, permits are required for all ADUs in Los Angeles. California's ADU laws have streamlined the process with no discretionary approval needed. Build & Decor handles all architectural plans, permit applications, and city inspections. We ensure full compliance with LA's building codes and ADU ordinances.

How much does an ADU add to property value?

A well-built ADU typically adds meaningful long-term value to the property and produces monthly rental income scaled to the neighborhood, size, and finish. Many homeowners recover their investment through rental income alone; your appraiser and financing partner can model the specifics for your parcel.

What is the maximum ADU size allowed in Los Angeles?

Los Angeles allows ADUs up to 1,200 square feet for detached units or 50% of the primary dwelling's floor area, whichever is less. Garage conversions can use the full garage footprint. Junior ADUs (JADUs) can be up to 500 sq ft within the existing home. Setback requirements vary by lot.

Can I convert my garage to an ADU in Los Angeles?

Yes. Garage conversions are one of the most efficient ADU paths in LA. California law prohibits cities from requiring replacement parking when converting a garage, and the existing shell keeps the construction scope smaller. We handle all structural upgrades, insulation, HVAC, plumbing, and finishes.

Can I live in an ADU while renting my main house?

Yes. Many LA homeowners use ADUs for multigenerational living or as their primary residence while renting the main house for maximum income. This is especially popular in high-rent areas like Santa Monica, Venice, and Beverly Hills where main house rental income can exceed mortgage payments.

Do I need a separate utility meter for my ADU?

Separate meters are optional but recommended for rental ADUs to simplify billing with tenants. Electric sub-meters are affordable. Water typically stays on the main meter. Gas depends on appliance configuration. We advise on the most practical setup during design consultation.

What's included in your ADU construction package?

Our full-service package includes: architectural design and engineering, permit applications and city approvals, foundation work (if needed), framing and structural, electrical and plumbing, HVAC system, insulation and drywall, flooring and finishes, kitchen and bathroom, windows and doors, exterior finishes, and final inspections.

What ADU financing options are available?

Common ADU financing options include: home equity loans or HELOCs, construction loans, cash-out refinance, ADU-specific loans (increasingly available), and some LA homeowners qualify for low-interest programs. We can refer you to lenders experienced with ADU financing.

Are there setback requirements for ADUs in Los Angeles?

Yes. Detached ADUs typically require 4-foot rear and side setbacks. ADUs can be built to 16 feet high (or taller in some zones). Garage conversions usually don't require new setbacks if keeping the existing footprint. We assess your lot during the initial consultation to determine buildable area.

What warranty do you provide on ADU construction?

We provide a 1-year workmanship warranty on all labor and installation. Appliances, HVAC, and materials carry their respective manufacturer warranties (typically 1-10 years). We're a licensed California contractor (CSLB #1113888) with full liability insurance up to $2M and bonded as required.

Garage Conversions & ADUs in Los Angeles

Maximize your Los Angeles property's value and income potential with a professionally built ADU. Build & Decor handles everything from architectural design and permits to construction and final inspections. Whether you're converting an existing garage or building a detached unit, we create income-generating rental spaces or multigenerational living solutions that comply with California's ADU regulations.

Call Now: (949) 558-9738

Why Choose Build & Decor

Full architectural design and engineering to meet California ADU regulations

All permit applications, city approvals, and inspection coordination included

Licensed electricians and plumbers ensure code-compliant utilities

Premium finishes and energy-efficient systems for tenant appeal

Garage conversions - the most efficient path to a permitted ADU

Detached ADUs up to 1,200 sq ft with custom floor plans

1-year workmanship warranty covering all labor and installation

Dedicated project manager for seamless communication throughout

Our Process

Discovery

Initial consultation and needs assessment

Design & Permits

Detailed planning and permit acquisition

Build

Licensed professionals execute the work

Final Walkthrough

Quality assurance and warranty

CSLB #1113888

CA General Contractor

5.0★ average

88 client reviews

Quality Guarantee

1-Year Workmanship Warranty

Full Insurance

General Liability up to $2M

Recent Projects

Mar Vista Garage Conversion

2-car garage to 500 sq ft studio ADU

•Full kitchen with quartz countertops
•Modern bathroom with walk-in shower
•Mini-split HVAC for year-round comfort
•Private entrance and patio area

Culver City Detached ADU

New 800 sq ft 1-bedroom ADU

•Open-concept living and dining
•Full kitchen with stainless appliances
•Washer/dryer hookups included

Frequently Asked Questions

ADU Construction Scope Tiers

Understanding ADU investments helps you plan your investment. Here's what to expect for different project types in the Los Angeles area.

Most Affordable

Garage Conversion (400-600 sf)

• Uses existing structure
• Studio or 1-bed layout
• Full kitchen & bath
• 6-10 month timeline

What Affects ADU Construction Cost?

Site Conditions

Slope, access, soil conditions, and utility connections affect site work investments

ADU Type

Garage conversions investment less than detached new construction

Finish Level

Standard vs. premium appliances, countertops, and flooring

Utility Requirements

New utility runs vs. tapping into existing infrastructure

ADU Construction Timeline

A typical ADU project takes 8-14 months from design to move-in ready. Here's the detailed breakdown of each phase.

Month 1-2

Design & Engineering

Site assessment, architectural design, structural engineering, Title 24 energy calculations, 3D renderings.

Month 2-4

Permits & Approvals

Submit to LA Building & Safety, respond to plan check comments, obtain building permits. Streamlined ADU process.

Month 4-5

Site Prep & Foundation

Clear site, excavate if needed, pour foundation (or reinforce existing slab for garage conversions).

Month 5-7

Framing & Rough Systems

Frame walls and roof, install electrical, plumbing, and HVAC rough-in. Pass inspection milestones.

Month 7-9

Insulation & Drywall

Install insulation, hang and finish drywall, exterior siding and roofing. Windows and doors installed.

Month 9-11

Finishes & MEP Trim

Flooring, tile, paint, cabinets, countertops, fixtures, appliances. Complete all finish work.

Month 11-12

Final Inspections & CO

Final city inspections, obtain Certificate of Occupancy, walkthrough with homeowner, warranty review.

ADU Types & Options

California law allows multiple ADU types-choose the best option for your property and goals

ADU Types

Garage ConversionMost efficient path
Detached ADUUp to 1,200 sf
Attached ADUConnected to home
Junior ADU (JADU)Up to 500 sf

LA ADU Regulations

Max Size (detached)1,200 sq ft
Setbacks4 ft rear/side
Height Limit16 ft (varies)
ParkingNot required

ADU ROI in Los Angeles

• Typical ROI: 100%+ in 5-7 years
• Tax benefits for rental income
• Multigenerational living savings

Why Choose Build & Decor

• Licensed CSLB #1113888
• $2M liability insurance
• 50+ ADUs completed in LA
• Full permit handling included
• 1-year workmanship warranty

Where we build ADUs

Each city permits accessory dwelling units its own way. These pages cover the local process in detail.

ADU Builder in Santa Monica

Santa Monica Building and Safety, Section 9.31.025, alley-facing units

ADU Builder in Brentwood

LADBS permitting, standard plans, estate-lot placement

ADU Builder in Beverly Hills

Article 50 plan check, guest and junior units, finish parity

ADU Builder in Pacific Palisades

Hillside grading, soils engineering, coastal zone review

Related Services

Often paired with ADU construction for complete property development

Full Home Renovation

Update your main house while building an ADU

Kitchen Remodeling

ADU kitchen design and installation

Bathroom Remodeling

ADU bathroom design and installation

ADU Construction by Location

Trusted by Los Angeles Property Owners

50+

ADUs Completed

5.0★ average

88 client reviews

100%

Permit Approval Rate

100%

Permitted, Code-Compliant Builds

Same service nearby

"Converted our two-car garage into a beautiful studio ADU. Permits, design, construction - they handled it all. The rental income has been meaningful and consistent. Best investment we've made."

Carlos & Maria G.

Garage Conversion ADU · Mar Vista

Serving West Los Angeles

We proudly serve homeowners and businesses across West LA, including:

Santa Monica

Venice

Mar Vista

Culver City

Brentwood

Pacific Palisades

Westwood

West LA

Beverly Hills

Century City

Ready to Get Started?

Schedule a consultation today and let's bring your vision to life.

(949) 558-9738

Garage Conversions & ADUs in Los Angeles

Why Choose Build & Decor

Our Process

Discovery

Design & Permits

Build

Final Walkthrough

Recent Projects

Mar Vista Garage Conversion

Culver City Detached ADU

Frequently Asked Questions

Can I convert my garage into an ADU in Los Angeles?

How much does a garage conversion or ADU cost in LA?

How long does it take to get an ADU permitted and built in Los Angeles?

Does an ADU need its own kitchen and bathroom?

How much does an ADU add to property value?

What is the maximum ADU size allowed in Los Angeles?

Can I live in an ADU while renting my main house?

Do I need separate utility meters?

What's included in your ADU construction package?

What ADU financing options are available?

Are there setback requirements for ADUs?

What warranty do you provide on ADU construction?

ADU Construction Scope Tiers

What Affects ADU Construction Cost?

ADU Construction Timeline

Design & Engineering

Permits & Approvals

Site Prep & Foundation

Framing & Rough Systems

Insulation & Drywall

Finishes & MEP Trim

Final Inspections & CO

ADU Types & Options

ADU Types

LA ADU Regulations

ADU ROI in Los Angeles

Why Choose Build & Decor

Where we build ADUs

ADU Builder in Santa Monica

ADU Builder in Brentwood

ADU Builder in Beverly Hills

ADU Builder in Pacific Palisades

Related Services

Full Home Renovation

Kitchen Remodeling

Bathroom Remodeling

ADU Construction by Location

Trusted by Los Angeles Property Owners

Related services and areas

Same service nearby

Serving West Los Angeles

Ready to Get Started?