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DETACHED ADU PLANS

Choose from one of our 20+ pre-designed ADU floor plans, modify an existing design to meet your needs, or work with our designers to create a custom plan all your own.

We've helped over 100 California families design and permit their dream ADU, and we're ready to help you too.

Detached ADU Plans

Choose one of our 20+ pre-designed ADUs.
Or, design a custom ADU from scratch.

Studio Cottage ADU Plan
Cottage ADU
Modern Cottage ADU Plan
Modern Cottage
Spanish Style ADU Plan
Spanish ADU
Modern Bungalow ADU Plan
Modern Bungalow ADU
Traditionl ADU Plan
Traditional ADU
Farmhouse ADU Plans
Farmhouse ADU
Modern ADU Plans
Modern ADU

Completed ADU Projects

Designed and Permitted by CALI ADU

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How It Works

FREE 30-Minute Consultation

We offer a free initial consultation and preliminary feasibility study to make sure your property is eligible and has the space for a Detached ADU. We'll also answer any questions you have regarding planning, designing, and building a Detached ADU.

Design & Construction Documents

Our Designers are ADU experts, and focus solely on designing beautiful small homes. We work collaboratively with you to make sure your new ADU design meets all your lifestyle needs.

Once you are 100% satisfied with the design, we generate the construction documents (i.e. - blueprints). This is where we add all the construction details and building code requirements and create a set of construction documents which will be used to build you new ADU.

Permit Approvals

We handle all the permit approval paperwork and expedite your project through the local building department. We have processed over 200 ADU projects throughout California, and have the knowledge and experience needed to get your project permitted and approved fast.

What Our Clients Are Saying


Josh - Burbank

We had a TERRIFIC experience with Charlie at CALI ADU. He was efficient, communicative and provided us with great blueprints for our garage conversion. Whenever the city had corrections, he was right on top of it responding and resubmitting. Highly recommend working with him.

Read the Google Review Here


Madeline - Manhattan Beach

I am so happy we chose CALI ADU to design and build our garage ADU. Charlie Melvin is exactly as easy to work with as he seems when you first meet him.

The consistent communication is so appreciated, and the outstanding quality of their work is exactly like the pictures we saw in the CALI ADU online portfolio.

Read the Google Review Here


Kevin - North Hollywood

We worked with Charlie from CALI ADU, who we engaged to draft our ADU. Initially, we worked with him to draft the ideas, but ultimately determined he was the best person to carry out the work. 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.

Read the Google Review Here

Plan & Permit Packages

Transparent, Flat-Fee Pricing.

Starting at

$ 5,990 *

Pre-Designed ADU Plans

Pre-Designed (Stock) Plan

Custom Site Plan

Building Elevations & Sections

Door & Window Schedule

Foundation & Framing Plans

Plumbing & Electrical Plans

Construction Notes & Details

Minor Design Revisions

Title 24 Energy Calculations

Permit Processing/Expediting

FREE CONSULTATION

Starting at

$ 7,490 *

Custom Detached ADU Plans

Custom Floor Plan

Custom Site Plan

Building Elevations & Sections

Door & Window Schedule

Foundation & Framing Plans

Plumbing & Electrical Plans

Construction Notes & Details

Unlimited Design Revisions

Title 24 Energy Calculations

Permit Processing/Expediting

FREE CONSULTATION

* Flat-fee pricing starts at $7,490 and increases based on ADU size and complexity of the design.

Consultants such as Structural Engineers, Surveyors, Civil Engineer, Soils Engineers, etc, may be needed to address any property specific requirements, and are not included in the flat-fee pricing. These consultants may or may not be needed depending on your property and the design of the ADU.

Book a Free Consultation Call for more information and to confirm pricing for your project.

100% Money-Back Guarantee

You'll love your ADU design and we'll get it permitted. Guaranteed!

ADU Plan Approval Guarantee

All of our Garage Conversion Plans and Permit Packages come with two separate money-back guarantees. If you don't love the design, or we can't get it approved, we'll give you all your money back.

The "Perfect ADU Plan" 100% Money Back Design Guarantee

If you don't absolutely love the design and floor plan of your new ADU, just let us know, and we will provide unlimited revisions to make it perfect. And if you don't like any of the designs we provide, we'll refund you every dollar you've paid. No questions asked and no hard feelings.

We truly want you to love your new ADU design

Assuming you love your new ADU design (and we're sure you will), we move forward with creating all the technical construction documents needed to obtain a building permit. That is where our 2nd 100% money back guarantee kicks in.

Our "Permit Approval" Guarantee

We are ADU experts and know what is allowed, and what is not, with the ADU laws and building codes. We're 100% confident our designs and plans will pass all required plan checks. If they don't pass, we will refund every dollar you have paid including all design fees and City/County plan check fees.

Pretty incredible, right? We offer these two guarantees because we understand the ADU process and know what it takes to get an ADU approved. We don't waste time and money designing and planning projects that wont be approved.