ADU Design & Build Services for Homeowners Like You

Thinking about adding an accessory dwelling unit? Looking for an all-in-one solution to ensure your project is a success? SnapADU is known for making the process transparent & predictable, with in-house design, regulatory expertise, and real-world building experience… all under one roof. We offer standard & custom stick-built ADUs that provide flexibility to create a space that fits your vision, property, and budget.

Bring Grandparents Closer

House Young Adults

Generate Rental Income

The all-in-one solution for your ADU project.

As a licensed general contractor, we take full accountability for your accessory dwelling unit design build project. We offer transparency throughout the process, keeping you apprised of the all-in costs of your project. We are the only design build firm to guarantee your final pricing while we permit the unit. We can do this because our own team is responsible for delivering on our promises.

From the first time you contact us to the time we hand you the keys to your new ADU home, you'll be working with SnapADU employees. As experienced ADU builders, we will anticipate the pitfalls that less seasoned or less integrated teams will miss. And the volume of ADU jobs we handle means we have gained an incredible amount of expertise that we are excited to bring to your project.

Why SnapADU?

ADU 101 Webinar

Make it your Own: Custom ADU

Try customizing your own large L-Shape floor plan using our interactive 3D floor plan tool. This 1200 sqft ADU plan can be configured to have two or three bedrooms, and one to three baths.




Old Winery Road
Poway, California 92064
1 Bed • 2 Bath • 1,000 ft2


Cherokee Avenue
San Diego, California
1 Bed • 1 Bath • 498 ft2


Camino Arena
Carlsbad, California 92009
1 Bed • 1 Bath • 750 ft2

Why choose a Design Build ADU Contractor?

You may be wondering if you should start with an ADU consultant, designer, architect, general contractor or ADU builder for your guest house project.

The difference with a true design build ADU construction company like SnapADU is that the same company and team of people will be responsible for designing and permitting an ADU house that can also be built on budget. Incentives are aligned with the client; the entire project must be a success and run as quickly as possible. And our deep experience with ADUs that means we know what to anticipate so you don't end up with surprises.

When it comes to building an ADU home, San Diego homeowners are turning to SnapADU for a one-stop shop solution.

See Our Process

We are Your One-Stop-Shop for Accessory Dwelling Units

Feasibility & Budget

Can you build a guest house on your property? How much will it cost? We are ready to dive into your accessory dwelling unit project goals so we can answer questions and get into costs and timeline right away.

Architectural Plans

We’ve created many standard ADU designs to maximize space utilization & construction efficiency… so you get more out of your budget. We can also modify ADU house plans to fit your unique needs.

Permit Processing

We prepare all plans and paperwork for submission to the municipality. Our own employees work with the town to ensure plans swiftly pass through required plan check and permitting processes.

Design Selections

Our curated interior & exterior designs create a cohesive look for your accessory home project. Choose from our catalog of styles, or work with our designers to create a custom adu floorplan.


As an ADU builder, we handle the entire construction process, from breaking ground all the way to the final walk-through to make sure your guest home exceeds your expectations and is built to last.

Project Management

Our systems and processes keep your ADU design build job running smoothly and give you visibility on progress. You can approve design choices and pay invoices right from your phone or computer.


We work with lenders who focus exclusively on ADU loans and who have vetted us as an approved ADU builder. We ensure you have the documentation you need to get funding for your casita.

Rental Support

Planning to build your accessory dwelling unit to rent? We can help you with the best ADU design build to maximize rent potential. We partner with corporate housing companies who make great tenants for steady rental income.

Find Property

Looking to buy a property and build an accessory unit? We can help you assess feasibility & cost of adding an ADU house to property so you can make an informed purchase decision & start planning.

ADU Design Build General Contractor Serving Greater San Diego

SnapADU is the largest design, permit & build ADU general contractor serving San Diego, Oceanside, Carlsbad, Encinitas, Poway, San Marcos, Escondido, La Mesa, El Cajon, Vista, Chula Vista, and surrounding areas of San Diego County.

Find Your City

Floor Plans

SnapADU 2BR/1BA 28×27 Square
2 Bed • 1 Bath • 749 ft2
SnapADU 3BR/2BA 36×31 L-Shape
3 Bed • 2 Bath • 999 ft2
2 Bed • 2 Bath • 1,199 ft2

We are Accessory Dwelling Unit Builders

SnapADU specializes in designing & building accessory dwelling units (ADUs, granny flats, casitas, guest houses, in law suites) in Greater San Diego. As a licensed general contractor, we take responsibility for the entire process for adding accessory homes. We provide the predictability you need on your highly specialized project of building a backyard home.

With a decade of custom home building experience & stellar client feedback as ADU builders, we bring all of our expertise to your stick-built ADU construction project. Our team is responsible for each step, from initial planning & budgeting, feasibility & design, plan check & permitting, & building your guest house. Plus we offer a price lock on the entire build in the first few weeks of your project.

Our Price Lock

From our Blog: How To Find An ADU Contractor

Check our our list of what to look for in ADU contractors, plus how to have a good experience building your custom ADU home... whether you build it yourself, hire a contractor, or something in between. Snap ADU has also been named to the top ADU builders in San Diego. Accessory dwelling units are an exciting opportunity for homeowners and we're excited to be part of this new wave of housing.

How to find the best ADU Builder

Where should I start on my ADU?

There's a lot to consider when building a granny flat and we want to make it easier for you. Clients come to us at all phases of their ADU project... just starting out, ready to go and looking for an ADU builder, or somewhere in between. Choose a path below to get started on the content most relevant to you.

I'm new to the ADU thing.

Just learning about ADUs? Wondering if an accessory home makes sense for you? We can help you get up to speed on the relevant regulations & share what they mean for your ADU in San Diego.

I'm weighing the benefits.

Wondering if an accessory home makes sense for you? Still thinking about whether an ADU is worth it? Learn how much an ADU will cost so you can determine if it is the right investment for your family.

I'm looking for the right ADU builder.

Comparing ADU builders? You've come to the right place. We will look at your property specifics and prepare a proposal to design, permit and build your ADU unit... then stand by that price.