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Garage Conversion ADU Plans

Your garage is already halfway there.

Converting your garage into an ADU is the least expensive and fastest way to add a permitted dwelling to your property. The foundation, walls, and roof already exist — we handle the design, permits, and construction to turn it into a beautiful, code-compliant home.

From $7,490
Plans & permitting
From $145K
Turnkey construction
126
ADU projects since 2017
Visualize My ADU

15 minutes · No obligation

Spanish bungalow garage conversion ADU in Jefferson Park, Los Angeles
Garage conversion plan types

Three approaches, one goal.

Every garage is different. Choose the approach that fits your existing structure, or start with a consultation and we will recommend the best path.

Straight garage conversion ADU — exterior rendering Straight garage conversion ADU — floor plan

Straight Garage Conversion

320–440 sqft · Studio / 1 Bath

Convert your existing garage footprint as-is. No structural additions — just a full interior build-out with kitchen, bath, flooring, and finishes. The fastest and most affordable option.

All-inclusive From $150,000
Plans & permitting only From $7,490
Garage conversion with addition — exterior rendering Garage conversion with addition — floor plan

Conversion + Small Addition

400–500 sqft · Studio or 1 Bed / 1 Bath

Extend beyond the original garage footprint to add a bedroom, a larger kitchen, or a more open floor plan. Requires a small foundation pour for the addition.

All-inclusive From $175,000
Plans & permitting only From $8,490
3-car garage conversion ADU — exterior rendering 3-car garage conversion ADU — floor plan

3-Car Garage Conversion

600+ sqft · 1 Bed / 1 Bath

A large garage gives you room for a full one-bedroom home with a spacious kitchen, living area, and separate bedroom. The most square footage at the lowest cost per foot.

All-inclusive From $185,000
Plans & permitting only From $8,490
How it works

Three steps to a new home.

01

Free Consultation & Feasibility

We assess your garage, verify zoning eligibility, review setbacks and utility access, and determine which conversion approach works best for your property. No cost, no commitment.

02

Design & Construction Documents

Our team designs your garage ADU — floor plan, elevations, structural engineering, Title 24 energy compliance, and permit-ready construction drawings. We specialize in ADU code and have processed 126 projects through LA County building departments.

03

Permitting & Construction

We handle the full permit process and, if you choose all-inclusive, manage construction from demo to certificate of occupancy. Same crews, same project management, same quality standard as every CALI ADU project.

Client reviews

What our clients are saying.

★★★★★

"We had a TERRIFIC experience with Charlie at CALI ADU. He was efficient, communicative and provided us with great blueprints for our garage conversion. Highly recommend working with him."

Josh — Burbank

★★★★★

"I am so happy we chose CALI ADU to design and build our garage ADU. The consistent communication is so appreciated, and the outstanding quality of their work is exactly like the pictures."

Madeline — Manhattan Beach

★★★★★

"Charlie is professional, and he was always accessible when we had questions. He is adaptable and patient with changes. My wife and I highly recommend Charlie."

Kevin — North Hollywood

Looking for a detached ADU?

Browse our Signature Home lineup.

If your project calls for a new detached structure rather than a garage conversion, our nine Signature Homes offer fixed pricing from $219K to $459K — single-story and two-story options.

Browse Signature Homes
Next step

Find out if your garage qualifies.

Not every garage is eligible for conversion — zoning, setbacks, and utility access all matter. Our free consultation gives you a definitive answer in 15 minutes.

Architect-designed · Fixed price · Timeline guaranteed in writing