Transform Your Backyard Cottages Into
a Space of Comfort and Style
Let's Get Your Project Started!
Licensed Contractor
Fully Insured & Bonded
5-Star Google Reviews
On-Time Guaranteed
Transparent Pricing
Built for Family, Flexibility, and Future Value
An Accessory Dwelling Unit (ADU) is one of the smartest ways to add space, functionality, and value to your property. Whether you’re building a private suite for family, a rental unit for extra income, or a comfortable home office, DB Construction is your trusted partner for custom ADU design and construction in San Diego.
Our team handles every stage — from planning and permits to design and build — ensuring your ADU meets local requirements and matches your home’s look and feel. With our expertise, you can make the most of your property while enjoying a space that’s efficient, modern, and built to last.
What We Offer
Detached and Attached ADUs
From standalone backyard units to additions connected to your home, we design spaces that blend seamlessly with your property.
Garage Conversions
Turn unused garage space into a comfortable, fully functional living area or rental suite.
Basement and Attic ADUs
Maximize your existing footprint with smart conversions that make every square foot count.
Custom Design and Layout Planning
We create thoughtful layouts tailored to your lifestyle, family needs, or rental goals.
Permit Assistance and Project Management
Our team streamlines the process by handling permits, inspections, and all project logistics from start to finish.
How It Works
Our Simple 4-Step Process
From your first call to the final walkthrough — we make remodeling stress-free.
Free Consultation
Call or fill out the form. We discuss your goals, timeline, and budget — no commitment.
Transparent Estimate
Written estimate with detailed line items. No hidden fees, no vague pricing.
Expert Build
Our crew handles everything — on schedule, respecting your home throughout.
Final Walkthrough
We walk through every detail together. You sign off only when you're fully satisfied.
Why Homeowners Choose DB Construction
Transparent Pricing
Detailed written estimate before any work begins. No surprise costs — ever.
On-Time Delivery
We set a project timeline upfront and we stick to it. No dragging jobs out.
Licensed, Bonded & Insured
CA Lic #1110880. You're fully protected on every project we undertake.
Direct Communication
You get Owner's direct number. No project managers, no phone trees, no runaround.
Workmanship Guarantee
We stand behind every job we complete. Not right? We fix it — no questions asked.
Why Choose DB Construction
We combine craftsmanship, communication, and compliance to make ADU construction stress-free. Our team works closely with you to deliver a space that fits your goals — whether it’s expanding your home for loved ones or creating an income-generating investment.
Every DB Construction project is built with precision, efficiency, and care — because your new space deserves the same quality as the home you already love.
- LICENSED
- INSURED
- BONDED
Lic # 01110880
ABOUT US
We Know The Remodeling Industry
We are DB Construction 18 Inc., a San Diego-based remodeling company dedicated to excellence, integrity, and customer care. With years of experience and a team of skilled professionals, we deliver high-quality home renovations that enhance your lifestyle and increase your property’s value. We pride ourselves on clear communication, timely completion, and workmanship you can count on.
What Homeowners Are Saying
Don’t just take our word for it. See why homeowners in the San Diego area trust us for their remodeling needs.
Area We Serve
We proudly serve the San Diego metro area and nearby communities within a 50-mile radius, including:
- San Diego (City and County)
- La Jolla
- Del Mar
- Encinitas
- Carlsbad
- Oceanside
- Vista
- Escondido
- Poway
- Santee
- Chula Vista
- El Cajon
- La Mesa
- And More!
Areas We Serve
We proudly serve the San Diego metro area and nearby communities within a 50-mile radius, including:
- San Diego (City and County)
- La Jolla
- Del Mar
- Encinitas
- Carlsbad
- Oceanside
- Vista
- Escondido
- Poway
- Santee
- Chula Vista
- El Cajon
- La Mesa
- And More!
FAQS
ADU costs in San Diego typically range from $80,000 to $200,000+, depending on type and size. A garage conversion usually runs $80,000–$120,000. A detached ADU starts around $120,000–$200,000+. We'll give you a detailed written estimate after a free site consultation — no guessing, no hidden fees.
From permit approval to completion, most ADUs take 4–8 months. Permitting itself typically takes 2–4 months in San Diego. We manage the entire process — design, permits, and construction — so you have one point of contact throughout.
Yes. We manage the full permitting process with the City of San Diego on your behalf. We know the local codes and requirements — you don't have to figure it out yourself.
Yes. ADUs are fully legal to rent in California. Many homeowners use them as long-term rentals or Airbnb units. We can help you design the layout with rental income in mind — efficient use of space, separate entrance, and privacy from the main home.
We build detached ADUs, attached ADUs, garage conversions, and basement conversions. Each has different cost, timeline, and permitting requirements — we'll help you choose the right option for your property and budget.
Yes — ADUs are one of the highest-ROI investments in San Diego real estate. A well-built ADU can add $150,000–$300,000+ to your property value depending on size and location, while also generating monthly rental income.
NEed A CAll?
Talk to Owner directly
From your first call to the final walkthrough — we make remodeling stress-free.
- We respond within 24 hours
- 100% free — no obligation
- Serving all San Diego County