Turn Your Backyard Dream Home into a Reality

OneStop ADU is your backyard home expert in San Diego County

Why Choose OneStop ADU

Your OneStop shop to make your backyard dream home a reality

OneStop ADU was created with you in mind. Do you want to add a backyard home to your investment property or build a living space for your parents, grown children or for rental income?  OneStop ADU has the expertise in the booming ADU (additional dwelling unit) space, construction and property management through our sister company, Onyx Property Management.  Our 6 pre-designed plans are available in 3 exterior styles- Contemporary, Craftsman and Spanish/Mediterranean.  We did all the leg work and have sourced interior and exterior finish selections for each style creating a cohesive designer look.  Since plans are already created, we save you money, time and the hassle of the lengthy back and forth design process and your permit application can be submitted to the city more quickly.  OneStop ADU's construction pricing includes architectural plans, structural plans, Title 24 report, permit processing, individually metered electrical upgrade (does not include SDG&E fees), and required solar for your ADU based on requirements for Climate Zone 7.  Our OneStop ADU team will meet with you to gain an understanding of your vision for your casita. In advance of your initial consultation, we will conduct a basic feasibility study of your San Diego property to verify all local and state rules.  We will also verify allowable sizes and suggest general placement of your new structure. This initial no-cost, no-obligation meeting will help you decide if building a backyard home is right for you.

Whether you call it an ADU, backyard home, granny flat, casita or guest house, OneStop will make your dream a reality!

What Sets Us Apart

OneStop ADU offers a turnkey solution for homeowners to take advantage of this unprecedented opportunity. We have 6 pre-designed floor plans, handle the daunting permitting process, offer a lender matching program, provide quality construction, and have the option of property management services if you plan on renting your backyard home.

No-Cost Initial Consultation

Our OneStop ADU team will meet with you to understand your vision and provide a basic feasibility study at no charge and with no obligation.

6 Pre-Designed Plans

 Our pre-designed floorplans range from a 400 sq ft studio to a 1,200 sq ft four-bedroom option.

3 Style options

Explore our unique exteriors designed in Contemporary, Craftsman & Spanish/Mediterranean styles. 

Curated finishes

We did all the leg work! Pre-selected designer finishes create a cohesive look for your new backyard home.

Permit Processing

OneStop ADU has the knowledge and experience to handle the daunting permitting process on your behalf.


Our in-house licensed building team has over 25-years experience constructing homes and multi-family projects.

Project Management

OneStop ADU will manage your project from inception to finished product helping to ensure a smooth process. 

Lender Matching Program

We have teamed up with some of the top San Diego lenders to help match you to the best loan programs available.

Property Management

If you would like to rent out your ADU, our sister company, Onyx Property Management, can manage it for you.

OneStop ADU clients will also enjoy these bonus inclusions:

ADU Feasibility Study

Provided for no charge at initial in-person consultation

Construction Drawings

Included for our 6 pre-designed plans with signed contract

Permit Processing

Included with signed contract


Included as specified for our 6 pre-designed plans with signed contract

Plans & Designs

OneStop ADU offers 6 floorplans and 3 unique exterior styles for your dream San Diego backyard home.

400 sq ft


749 sq ft

2 Bedroom/1 Bath

1000 sq ft

3 Bedroom/2 Bath

600 sq ft

1 Bedroom/1 Bath

800 sq ft

2 Bedroom/2 Bath

1200 sq ft

4 Bedroom/2 Bath

We Want to Hear From You

Contact OneStop ADU today. We serve owners and investors in the entire county, including San Diego, Chula Vista, Oceanside, Carlsbad, and the surrounding areas.

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