We are Accessory Dwelling Unit Builders

SnapADU specializes in designing & building accessory dwelling units (also known as ADUs, granny flats, casitas, guest houses, in law suites) in Greater San Diego. As a licensed general contractor, we take responsibility for the entire design, permit and build process for your ADU. We want to provide the predictability you need on your highly specialized project of building an ADU. We have brought ADU design build all under one roof to ensure accountability for the whole process.

We work with both standard floor plans and customization. Our team of employees are responsible for each step, from initial planning & budgeting, feasibility & design, plan check & permitting, and building your guest house. This means we can offer a price lock within the first few weeks of your project.

With nearly a decade of custom home building experience and stellar client feedback as general contractors, we're excited to focus exclusively on ADUs. We're bringing all of our expertise to your ADU construction project, which means we will look at the entire ADU cost from day 1.

We are Your One-Stop-Shop for an ADU Build

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 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 project. Choose from our catalog of styles, or work with our designers to customize a look just for your ADU.


As ADU builder, we handle the entire ADU 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 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 rent out your ADU? We can help you with an ADU design to maximize rent potential. We also 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 to property so you can make an informed purchase decision & start planning.

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
SnapADU 2BR/2BA 48×31 L-Shape
2 Bed • 2 Bath • 1,199 ft2

Where should I start?

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 additional unit 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 ADU makes sense for you? We can help you get up to speed on the relevant regulations & share what they mean for your ADU costs in San Diego.

I'm ready to build an ADU.

Ready to get a proposal for an ADU? 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.

I'm considering options.

Still thinking about ADU construction options? Not sure where to start in the design & permitting process? Take a look at our step by step process, from proposal through ADU construction.



Montauk Street
Poway, California 92064
2 Bed • 1 Bath • 750 ft2


Double Ll Ranch Road
Encinitas, California 92024
2 Bed • 2 Bath • 1,200 ft2


Munevar Road
Encinitas, California 92007
1 Bed • 1 Bath • 495 ft2

Why choose a Design Build ADU Contractor?

You may be wondering if you should start with an ADU consultant, designer, architect, or a general contractor for your guest house project. In any of those scenarios, you will have to assemble a team, which may or may  not work cohesively.

The difference with a true design build ADU construction company is that the same company and team of people will be responsible for designing and permitting an ADU that can also be built on budget. Incentives are fully aligned with the client; the entire project must be a success and run as quickly as possible.

SnapADU is the largest design, permit & build ADU general contractor serving San Diego, Oceanside, Carlsbad, Encinitas, Del Mar, Solana Beach, Poway, San Marcos, Escondido, Fallbrook, La Mesa, El Cajon, Vista, Chula Vista, Rancho Santa Fe, Rancho Bernardo, and surrounding areas of San Diego County.

What makes Snap ADU stand out?

The volume of jobs we handle means we have gained an incredible amount of expertise. We will anticipate the pitfalls that less experienced or less integrated teams will miss. And as a licensed general contractor, we take full accountability for the entirety of your ADU project; you work with us for the whole project and our own team is responsible for delivering on our promises.

About Snap ADU

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 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.

How to find the best ADU Builder