ADUs & Home Additions in San Diego
Add real living space — a guest unit, rental, or extra room — built to last.
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Overview
ADUs & Home Additions in San Diego
We start by understanding your goal — rental income, multigenerational living, or more space — then assess feasibility, develop design and scope, handle permitting, and build on a confirmed schedule. You get one accountable contractor for the full project.
- Detached and attached ADUs plus room additions, designed and built by one licensed team.
- Guidance through design, permitting, and California ADU requirements so the process is less daunting.
- Construction that matches your existing home and holds its value over time.
Do you need it?
Signs an ADU or addition is the right move
Adding space pays off when your home no longer fits your life or your plans. These are the signs it's time:
You want rental income from your property
A detached or attached ADU can become a long-term rental, a common reason San Diego homeowners build one.
You're planning for multigenerational living
Aging parents, adult kids, or a live-in caregiver often call for a separate, self-contained living space.
You're simply out of room and don't want to move
When the location is right but the square footage isn't, adding space beats taking on a new mortgage and a move.
You have an underused garage or backyard
A garage you don't park in, or unused yard space, is often the easiest path to added living area.
You want a home office, guest suite, or flex space
A dedicated room or unit separates work and guests from the main living areas of the house.
Why add space with one licensed team
Design, permit, and build under one company
Detached and attached ADUs plus room additions are designed and built by one licensed team, so you have a single accountable contractor.
Guided through California and local ADU rules
ADU requirements cover size, setbacks, parking, and utilities. We guide you through design and permitting so the project meets the rules before construction starts.
Built to match your existing home
New space is detailed to tie into the look of your house rather than read as an obvious add-on, which protects long-term value.
Real, lasting living space
Whether it's rental income, family living, or more room, the result is durable square footage built to hold its value over time.
Feasibility checked before you commit
We assess your specific lot — size, setbacks, and local rules — during discovery before committing to a scope.
Make the right call
Detached ADU, garage conversion, or room addition?
All three add usable space, but they differ in cost, privacy, and what your lot allows. A detached ADU is a standalone unit; a garage conversion turns existing structure into living space; a room addition extends the main house. Your goal and lot usually point to one.
A detached ADU fits when…
- You want a fully separate, private unit for rental or family
- Your lot has room to meet setbacks for a standalone structure
- Long-term rental income or independent living is the goal
- You want the most flexibility in layout and entrance
A garage conversion or room addition fits when…
- A garage conversion: you have an underused garage and want a lower-disruption path using existing structure
- A garage conversion: lot space is tight and a standalone unit won't fit the setbacks
- A room addition: you want to expand the main home itself — a bedroom, suite, or larger living area
- A room addition: the new space should function as part of the house, not a separate unit
Pro tips before you build
- ◆Start with a feasibility check — lot size, setbacks, and local rules decide which options are even on the table before you fall for a design.
- ◆A garage conversion can be the most cost-effective path because it reuses existing structure, but confirm parking rules for your area first.
- ◆If rental income is the goal, design the unit's privacy and separate entrance early — it shapes the whole layout.
- ◆Match rooflines, materials, and finishes to your existing home so the addition reads as original and protects resale value.
- ◆Map out utility connections early; tying water, sewer, and electrical into a new unit is a real part of the budget and schedule.
What affects your investment
- Type and size — detached ADU, garage conversion, or room addition
- Whether you're building new structure or converting existing space
- Utility connections: water, sewer, electrical, and any panel upgrades
- Foundation, roofing, and how the new space ties into the existing home
- Site conditions, setbacks, permitting, and finish level
How it works
A clear path from first call to final walkthrough.
We start by understanding your goal — rental income, multigenerational living, or more space — then assess feasibility, develop design and scope, handle permitting, and build on a confirmed schedule. You get one accountable contractor for the full project.
Consult & assess
A free on-site visit to understand your goals, space, and conditions before anything is priced.
Scope & schedule
A written scope, material selections, and a realistic timeline you approve before work begins.
Build & walkthrough
One accountable team executes on the confirmed schedule, then walks the finished result with you.
Related work
Projects in this category.
Planning guidance
What to budget and how long it takes.
Planning range
Scoped to your project
Every adus & home additions is priced to your space, materials, and scope — confirmed in a written quote after a free on-site consultation, never a one-size-fits-all number.
Typical timeline
Confirmed at consultation
Timelines vary with scope, materials, and permitting. Your project manager confirms the schedule before work begins.
FAQ
ADUs & Home Additions, answered.
What's the difference between a detached and attached ADU?
A detached ADU is a separate structure on your lot; an attached ADU connects to or converts part of your existing home (like a garage). Each has different cost, permitting, and design implications. We'll help you choose based on your lot, budget, and goals.
Do you handle ADU permitting and requirements?
Yes. California and local ADU rules cover size, setbacks, parking, and utilities. As a design-build GC, we guide you through design and permitting so the project meets requirements before construction starts.
Can I build an ADU on my San Diego property?
Most San Diego residential lots can accommodate some form of ADU, but feasibility depends on lot size, setbacks, and local rules. We assess your specific property during the discovery and site-visit phase before committing to a scope.
Ready to plan your adus & home additions?
One licensed, family-owned team accountable from first call to final walkthrough. Book a consultation or get a planning range to start.