Quickly Build An ADU in California with Our Pre-Approved Plans

Ten Seventy Architecture helps people who love modern architecture overcome the challenges of building an accessory dwelling unit (ADU) in California. Our architecture studio combines a love of modern design, a proven process, and the latest technology to elevate our clients’ lives with incredible architecture.

With our expert developed pre-approved plans, it’s never been more efficient or affordable to build a high-end ADU in California.

Our Pre-Approved ADU Plans Make Building An ADU Easy in California

Accessory dwelling units (ADUs) are becoming popular projects for homeowners and rental property investors alike throughout California. ADUs are great options for those looking to expand their living space or begin rental property investing. Our pre-approved ADU plans help our clients overcome the challenges of building a high-end unit with sleek + functional design by making the process easier and more affordable than ever.

These pre-approved plans, based on our Prince House ADU project, incorporate complex city codes and common regulations for San Diego. When you begin your project with our pre-approved options, you can focus on choosing the design details and customization options that will enhance your life for years to come.

Our modern architecture team has spent 10+ years shaping our proprietary design + build process. We offer a full suite of services to make the ADU building experience as seamless as possible for our clients. If you’re looking for in-depth guides and common questions, check out our ADU Resource Center.

Once you're ready to move forward, click the button below to get in touch. We’ll help you customize our pre-approved ADU plans to fit your style and needs. 

Discover Our Pre-Approved ADU Plans

Key Benefits of Pre-Approved ADU Plans in California

Our ADU plans are expertly designed to help you save time, money, and stress while building a modern + functional ADU in California. While these plans are pre-approved, they’re anything but cookie-cutter. They offer the flexibility to incorporate several customization options and personal touches to make these plans your own.

Elevated Modern Designs at an Affordable Price

When you decide to begin your ADU project with our pre-approved plans, you’ll enjoy high-end designs and details at an affordable price point. These plans were developed to be the framework of your project, tailored to the specifications of your lot. Plus, they cost a fraction of our modular ADU designs but were created with the same modern + minimalist style.

And, for those interested in rental opportunities, our pre-approved plans are an excellent way to achieve extra design value. You'll be able to rent out your space for more than a standard ADU.

With our pre-approved plans and streamlined process, we'll begin the construction of your ADU weeks before the traditional process would allow – saving a substantial amount of money along the way. Of course, we're passing these savings on to you.
Photo of a modern renovation project by ten seventy architecture

Customization for a One-of-a-Kind ADU

As ADU projects in California become more popular, we understand the importance of adding your personal touch to the space. Luckily, we’ve included several customization options to make your future ADU exactly what you have in mind.

With these plans, you can convert your unit into a two-story duplex, add a balcony, or scale down its footprint to fit tighter lots. And, we’ll continue adding more of these customization options in the future.

Our pre-approved California ADU plans were created with the flexibility to be customized to your project needs and lot size. We develop our designs by carefully considering and detailing each and every section of a home.

Our architects have worked to increase efficiency + sustainability, presenting great options regardless of the orientation of your lot. We know how to make smaller spaces feel expansive, while maintaining a smaller footprint and livable outdoor space.
Photo of a modern home in San Diego designed by Ten Seventy Architecture

An Efficient + Streamlined Process

By using our pre-approved ADU plans in California, the process of building an ADU is more efficient than ever. Your project will be designed, permitted, and completed roughly three to four months faster than it would be for a typical ADU.

Because these plans are pre-approved, there will be less of a chance for delay or unexpected cost in the future. The designs incorporate specific codes and regulations, and are designed to fit lots as narrow as 25’ wide. Once we shape the plan to your lot size and incorporate any additional customization, we will draft the final floor plans and submit them for permitting.

Wondering what these pre-approved plans look like in action? Scroll down to see our portfolio and check out the Prince House ADU, the project these plans are based on. 
Photo of a modern ADU project in San Diego by Ten Seventy Architecture

3 Steps to Make Your ADU Project a Reality with Our Pre-Approved ADU Plans

Book an ADU Consultation

Learn More About Our Modern Architecture Studio + Options for Building Your ADU

Share Your Project Goals with Us + Receive Our Professional Advice

Have a Plan to Confidently Hire an Architecture Studio for Your ADU Project

See Our Portfolio of Past ADU Projects in California

With over a decade of experience, Ten Seventy Architecture has become one of San Diego’s leading architecture studios dedicated to creating beautiful ADUs. In fact, our pre-approved ADU plans for California residences were developed based a recent project called “The Prince House.” It’s a perfect case study for achieving high-end designs at a reasonable cost.

Meet the ADU Team at Our Modern Architecture Studio

At Ten Seventy Architecture, we put our clients’ goals and feedback at the center of every design. Our modern architecture studio utilizes a proven process and the latest technology to develop modern + functional designs that delight for years to come.

Founder / Principal Architect

Sean Canning

Sean is a graduate of NJIT, where he studied architecture + industrial design. He relocated to San Diego in 2009 to open the boutique architecture studio, Ten Seventy Architecture, focussing predominantly on modern, minimalist, + creative architecture. Sean has also won various awards for modern furniture he has designed.

  • California Registered Architect

  • LEED Accredited Professional

  • Bachelor of Architecture (NJIT)

  • Certification in Project Management (SDSU)

Profile Picture of Sean Canning - Principal Architect and Owner of Ten Seventy Architecture in San Diego, California

Project Manager / Permit Specialist

Margaret Canning

Margaret is also a graduate of NJIT, where she studied architecture + civil engineering. She relocated to San Diego in 2010 working at a LEED consulting firm before taking a job as a project manager in San Diego’s permit office for 5 years. Later she brought her skillset to Ten Seventy Architecture where she manages projects + permitting.

  • LEED Accredited Professional

  • Bachelor of Architecture (NJIT)

  • Masters of Civil Engineering (NJIT)

  • Certification in Project Management (SDSU)

Margaret Canning Profile Photo of Ten Seventy Architecture

Architectural Designer

Jen-Ni Lin

Jen-Ni is our Architectural Designer who works on projects which require greater graphic illustration. She works on our aesthetic commercial projects as well as small modern ADU projects that require tight planning and out-of-the-box thinking. Jen-Ni is a talented designer who can develop good ideas into beautiful architecture.  

Margaret Canning Profile Photo of Ten Seventy Architecture

Architectural Designer

Nolan Delgado

Nolan is the team’s Architectural Designer who works on custom residential projects which require the highest level of attention to detail. He has worked to refine our 3D printed study models as well as build templated architectural processes. Nolan brings a modernists rational to our projects.  

Margaret Canning Profile Photo of Ten Seventy Architecture

10+ Years of Experience
in San Diego Architecture and Design Services

"Sean is the guy if you are looking for a Los Angeles architect. I was referred to him via a mutual business connection, and couldn't be happier with his work...The final product was phenomenal. I could not be happier. His work was not only exactly what I was looking for, but he did it in a timely fashion. "

Alexandra G.

"An element we loved about Sean was his ability to see creatively from the very beginning. And I can tell you that when we walked out of the meeting with Sean, we both looked at each other and said: “That’s the guy we want” And we’ve had no regrets ever since."

Tom R.

“5.000 stars. The recent opening of our ophthalmology practice has been a year in the making, and Sean Canning from Ten Seventy Architecture was integral to the successful design and execution of our space.”

Adam D.

“Highly recommend working with Sean, he is a licensed Architect who puts the customer's best interests first. I have worked with Sean on several projects, his thoroughness streamlines the project helping save money and time.”

Curtis P.

Frequently Asked Questions
About Our Pre-Approved ADU

How much Will This Pre-Approved ADU Cost?

Municipal permit fees will be about $10k per ADU. Current construction costs in San Diego start around $300/sf.

How Much Money Will I Save Compared to A Custom ADU?

By using one of our pre-designed ADU plans you can save upwards of $20k from typical design + engineering fees.

How Long Will It Take To Build This Pre-Approved ADU?

Permitting in San Diego can take around 3-4 months. Construction projects will generally take 12 months +/- depending on your contractor.

How Much Time Will I Save By Using These Pre-Approved Plans?

Our pre-designed ADU can shave 3-4 months off of our typical design process of designing an ADU from scratch.

Is Permitting Still Required for This Pre-approved ADU?

Yes, all projects, including ADUs + JADUs, require a permit.

What Do I need To Know About Permitting?

You don't need to know anything about permitting. We have the best permit expert in San Diego on staff!

How Long Will It Take To Customize The Plans?

If you'd like us to customize the plans per your specifications it will take us a few weeks.

How Can I Purchase These Pre-Approved ADU Plans?

Fill out the form on the bottom of this page to get in touch with us!