San Diego’s Trusted ADU Home Builder
Explore Greater San Diego ADU projects.
As an all-in-one ADU design build contractor, our portfolio ranges from standard, efficient designs to expansive, custom ADU projects. Our in-house design team tailors plans to your unique needs, and our construction team ensures your project stays on budget. Whether you’re interested in a small backyard cottage, a large guest house, a two-story ADU, or multiple units, we are equipped to bring your vision to life.
See what our customers are saying.
Search ADU floor plans.
Be inspired by a variety of ADU floor plans from our library. Starting with a plan that has been built before can help speed up the design process. We also offer custom ADUs and can modify any plan or start with your own drawings. Our in-house ADU designers ensure your floor plan & elevations work with the rest of your property constraints and can be permitted with the city.
Size of unit:
Beds:
Baths:
Stories:
Need a custom ADU floor plan?
Your one-stop-shop for ADUs.
SnapADU is your one-stop-shop for all your ADU needs. As the leading ADU builder in San Diego, we provide a comprehensive, turnkey solution for homeowners looking to add value and space to their property. Our expertise as an ADU contractor ensures that every detail is meticulously planned and executed, offering unmatched accountability.
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.
ADU COSTS
Design Selections
Our curated interior & exterior ADU designs create a cohesive look for your accessory home project. Choose from our catalog of styles, or work with our ADU designers to create a custom floorplan.
ADU DESIGNS
Architectural Plans
We’ve created many build ready ADU designs to maximize space utilization & construction efficiency… so you get more out of your budget. We can also customize ADU house plans to fit your unique needs.
ADU PLANS
Construction
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.
BUILD PROCESS
Rental Support
Planning to build your accessory dwelling unit to rent? Check out how to plan for the best ADU design build to maximize rent potential.
ADU RENTAL GUIDE
Permit Processing
We prepare all plans and paperwork for submission to the municipality. Our own employees work with the town to ensure your ADU plans swiftly pass through required plan check and permitting processes.
LOCAL ADU REGULATIONS
Project Management
Our systems and processes keep your ADU design build job running smoothly and give you visibility on progress with our schedule. You can view documents, make approvals, and pay invoices right from your phone or computer.
PROJECT MANAGEMENT
Find Property
Looking to buy a property and build an additional 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 Investments
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.
ADU COSTS
Architectural Plans
We’ve created many build ready ADU designs to maximize space utilization & construction efficiency… so you get more out of your budget. We can also customize ADU house plans to fit your unique needs.
ADU PLANS
Permit Processing
We prepare all plans and paperwork for submission to the municipality. Our own employees work with the town to ensure your ADU plans swiftly pass through required plan check and permitting processes.
LOCAL ADU REGULATIONS
Design Selections
Our curated interior & exterior ADU designs create a cohesive look for your accessory home project. Choose from our catalog of styles, or work with our ADU designers to create a custom floorplan.
ADU DESIGNS
Construction
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.
BUILD PROCESS
Rental Support
Planning to build your accessory dwelling unit to rent? Check out how to plan for the best ADU design build to maximize rent potential.
ADU RENTAL GUIDE
Find Property
Looking to buy a property and build an additional 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 Investments
Project Management
Our systems and processes keep your ADU design build job running smoothly and give you visibility on progress with our schedule. You can view documents, make approvals, and pay invoices right from your phone or computer.
PROJECT MANAGEMENT
ADU Design Ideas

SnapADU employees
Top ADU Contractor in San Diego County.
As deeply experienced ADU contractors, we anticipate pitfalls that less seasoned or less integrated teams will miss. The volume of ADU projects we handle means we have unrivaled expertise that we are excited to bring to your project.
We’re 100% focused on being the best ADU builders in San Diego County, and we take pride in the personal touch our in-house team brings to every project.
Watch our ADU 101 Webinar
ADU Builder Serving Homeowners Like You.
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Bring aging family closer
Build an ADU to comfortably bring aging relatives closer.
Learn more -
Downsize and rent main house
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Create flex space for work/hobby
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House younger family
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Generate rental income
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Bring aging family closer
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Downsize and rent main house
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Create flex space for work/hobby
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House younger family
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Generate rental income
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It’s going to be a great space for my mom to have her own independent area while staying close to our family.
Tiffany Rajski
Homeowner, Poway -
I decided to build an ADU because the property was a double wide lot. I'm a half mile from the beach and could see the view from the top of my house and thought, I have to take advantage of that.
Zeno Rausa
Homeowner, Oceanside -
I'm a product stylist and photographer. I decided to build an ADU because my business was taking off and I was spending a lot of time outside of the home. Building a studio lets me work from home more.
Liz Ream
Homeowner, Vista -
They built a brand new garage and a beautiful two-bedroom two-bath unit over the garage, which is perfect for when my daughters come to visit. Everything about it is amazing!
Mari Muscio
Homeowner, Carlsbad -
We were looking at ways to invest our money. My wife and I thought, why don't we build an ADU for rental income? Also, someday we can move into it. So it has multiple purposes.
Paul & Myra Winter
Homeowners, Oceanside
Where should I start on my ADU?
I'm new to the ADU thing
I'm considering options
I'm ready to build an ADU
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. 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 house that can also be built on budget. Incentives are fully aligned with the client; the entire guest house project must be a success and run as quickly as possible.
Our approach, distinct from prefab ADU providers, is tailored and flexible. We use traditional “stick-built” construction methods, ensuring a custom fit for your property’s unique needs, something prefab often can’t match. And our focus on ADUs in San Diego means that we have deep expertise that allows us to advocate for homeowners, saving thousands.
How to find top ADU contractors near me?
ADU Contractor Serving Greater San Diego
Prefab ADU vs. Stick Built
Comparing ADU construction options in San Diego
We are ADU Builders.
We work with both standard and custom ADU floor plans. We build for multigenerational living and for investors. 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 over a decade of custom home building experience and stellar client feedback as ADU builders, we’re excited to focus exclusively on accessory dwelling units. 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.