ADU Design & Build Services in San Diego, CA
A Whole New Home on Your Own Property
An accessory dwelling unit (ADU) adds living space, rental income and long-term value to your San Diego property. Pristine Design & Build handles it all with one team: design, engineering, permits, utilities, construction and finishes. Whether you want a detached backyard cottage, a garage conversion or a unit attached to your home, we'll guide you from first idea to move-in day.
What's Included in Your ADU Project
From the first sketch to the keys in your hand, we take care of every detail.
Design & Planning
We review your lot, zoning and goals, then create floor plans, 3D renderings and a clear scope so you know exactly how your ADU will look and live.
Permits & Approvals
We prepare plans, submit applications and manage inspections with the City of San Diego, so your ADU stays compliant and on schedule.
Foundation & Framing
Site prep, slab or garage conversion work, and solid framing, engineered to meet code and built to last.
Roofing, Windows & Insulation
Weather-tight roofing, energy-efficient windows and insulation that keep your ADU comfortable and efficient year-round.
Electrical, Plumbing & HVAC
Full kitchen and bath plumbing, wiring, and heating and cooling, with clean utility connections to the street or your main home.
Flooring, Paint & Finishes
Cabinets, flooring, fixtures, paint and exterior finishes that complement your main home and make the ADU feel complete.
How Your ADU Comes Together
Consultation
We visit your property, check setbacks and utilities, and talk through your goals, budget and timeline.
Design & Proposal
We draw your plans, help you pick materials and finishes, and share a detailed proposal we're happy to adjust.
Construction
After permits are approved, our crew builds your ADU while you get regular updates and one point of contact.
Final Walkthrough
We walk through your new ADU with you and make sure everything is just right before handing over the keys.
Reasons Homeowners Build an ADU
Rental income to offset your mortgage
A private home office or studio
A place for aging parents to live close by
Independent space for adult children
A comfortable guest house for visitors
A garage you want to turn into living space
A boost in your property value
Flexible space that fits every stage of life
Detached, Attached or Garage Conversion?
Some properties suit a detached backyard cottage, others a garage conversion, a junior ADU or a unit above the garage. We'll help you compare the options, set a realistic budget and choose the approach that works best for your lot and your plans.
ADU FAQs
How long does it take to build an ADU?
Design and permitting often take a few months, and construction typically takes several more, depending on size and scope. We give you a clear schedule up front.
Can I rent out my ADU?
In most cases, yes. Rules vary by property and city, so we review current San Diego requirements with you during your consultation.
Do you handle permits?
Yes. We prepare plans, submit the permit applications and manage inspections with the City of San Diego.
How much does an ADU cost?
Cost depends on size, type, site conditions, utilities and the finishes you choose. After a consultation, we provide a detailed proposal with no surprises.
Can I convert my garage into an ADU?
Often, yes. We assess your garage's structure and utilities, then design a conversion that meets code and makes the most of the space.