ADU & Backyard Homes
Detached accessory dwelling units built for rental income, family or resale value. We handle design, permits and construction from conception to occupancy.
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Licensed & Insured · CA Lic. B-239311
Reinvent Your Backyard With San Diego's Premiere ADU Builder
Ritz Design Build creates custom accessory dwelling units, garage conversions, granny flats and backyard offices across San Diego County — and we've been building here since 1965.
- Free 3D design & walkthrough
- Family owned, fully licensed
- Plans & permits handled for you
- 5-star rated on Google, Yelp & Houzz
61 years building
in San Diego
in San Diego
Yelp & Houzz
Licensed & insured
CA Lic. B-239311
CA Lic. B-239311
Our Services
What We Build
Garage Conversions
Turn an unused, glorified storage unit into a livable room or a backyard rental. Attached, detached or integral garages — we convert all three.
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Granny Flats
Keep aging parents close and independent. Single-story, step-free layouts designed around how your family actually lives — from studio to two bedroom.
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Backyard Offices & Studios
A real workspace forty steps from your back door — plus home theaters, gyms and gaming rooms. Quiet, insulated and fully permitted.
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3D Design & Permitting
We measure your home and digitize it into full-color 3D renderings you can walk through virtually — then pull every plan and permit ourselves.
Learn MoreWhy Ritz
The reason our projects don't stall
Most ADU horror stories come from the same place: too many separate companies, and nobody checking what the city will allow until it's too late.
Design and build under one roof
A designer, an architect and the construction crew are the same company. Hiring an architect, a designer and a builder separately is the fastest way to create delays, miscommunication and failed inspections — and to blow the budget.
We check what you can build first
San Diego County doesn't allow every type of ADU in every neighborhood. Clients come to us after finding out their plans can't be built. We research the permitting rules for your address before the design phase starts.
We pull every plan and permit
You have zero chance of paying for designs that cannot be built. We obtain the plans and permits, coordinate every inspection, and manage the timeline so a permit never quietly expires on you.
The same crew, every project
We partner with the same premier tradesmen on all of our projects. They've worked together for years, and it shows in how efficiently the job site runs.
How It Works
The Ritz ADU Planning Process
- 01
Meet the team & explore options
We listen to what you need, suggest ways to improve it, and find out what San Diego County will actually let you build in your neighborhood.
- 02
3D designs & modifications
We measure your property and digitize it into full-color 3D renderings. Walk through your ADU virtually and change it before anyone breaks ground.
- 03
Plans, permits & approvals
We prepare the drawings and walk them through the approval process ourselves — including the plan review and permit fees the city requires.
- 04
Construction to occupancy
One crew, one schedule, one point of contact. We coordinate every inspection through to the final sign-off.
What Our Clients Say
Client Testimonials
“The professionals at Ritz have, in our mind, re-defined the standard of excellence.”
“Their team performed like a fine tuned machine from conception to completion.”
“We are 100% pleased with our new living space! When we are ready for additional home improvement we will be calling Ritz Design Build.”
“Ritz’s team of contractors are excellent. They were generally quick, professional, and showed pride.”
Let's Talk About Your Project
Your Backyard Project Starts Here
Call us directly — a Ritz designer is ready to walk your property, check what's buildable in your neighborhood and put your idea in 3D.
Free 3D design · Fully Licensed & Insured · CA Lic. B-239311