Your Premier ADU Construction Partner.
We are BUILDERS you can TRUST. Explore our seamless process, expert guidance, and commitment to sustainability. Elevate your space today in San Diego County.
Welcome to Vision ADU
Your Trusted Partner for Garage Conversions and ADU Construction. We specialize in building brand new Accessory Dwelling Units or transforming garages into stunning spaces that maximize use and enhance property value.
30+ years of combined residential construction experience from founders Barak and Jaime
Assistance with project financing
Comprehensive architectural & structural plans
Diligent project management from signature to keys
30+
Combined Founder Years
Our Projects & Services
Comprehensive solutions tailored to maximize your property's potential and value.
Garage Conversions
Cost-effective way to create a separate unit. Transform your existing garage into a beautiful living space.
What's Included
New Construction ADU
By law, no city can deny an 800 sqft ADU. We build ground-up separate dwellings up to 1,200 square feet.
What's Included
Junior ADU (JADU)
Conversion of existing space within the home, including attached garages. Limits: 500 sqft or 50% of property sqft.
What's Included
Home Improvement
From stunning remodels to room additions, roofing, painting, windows, and AC. Second to none precision.
What's Included
What Clients Say
Trusted by homeowners across SoCal
Why Build an ADU?
An Accessory Dwelling Unit is one of the smartest investments you can make as a California homeowner. Here's why.
25-35%
Property Value Increase
Adding an ADU can significantly boost your home's market value.
Strong
Monthly Rental Income
Earn passive income by renting your ADU to long-term tenants.
3.5M
Housing Units Needed
California faces a severe housing shortage — ADUs are part of the solution.
100%
Legal on Any Lot
By law, every single-family lot in CA can build at least one ADU.
Multi-Generational
Keep family close while maintaining privacy
Home Office
Dedicated workspace steps from your home
Guest Suite
Comfortable, private space for visitors
Find Out What Your ADU Is Worth
See estimated rental income, property value increase, and financing options for your specific zip code.
How Much Is Your ADU Worth?
Enter your zip code and ADU size to see estimated rental income and property value increase
Make Your ADU Affordable
We work with trusted lenders to help you finance your ADU project. Many homeowners find their ADU pays for itself.
HELOC
Home Equity Line of Credit — flexible, revolving access to your equity. Draw funds as you need them throughout your build.
You have strong home equity and want flexible, draw-as-you-go access.
ARV Loans
After-Repair-Value loans based on what your property will be worth after the ADU is built — borrow more upfront.
You have limited equity today but the finished ADU will significantly boost property value.
Unsecured Loans
No collateral required. Quick approval personal loans to cover all or part of your ADU project.
You'd like to keep the loan separate from your home loans.
Construction Loans
Specialized construction financing that converts to a permanent mortgage upon completion.
You want a single loan that funds the build and rolls into a long-term mortgage.
Cash-Out Refinance
Refinance your existing mortgage to access cash for your ADU project.
Your principal is low or your current interest rate is average to high, and you like having only one payment.
Creative Financing
A custom blend of loan types tailored to your situation. Most buyers stack options to fund the build, then consolidate into one lower-rate loan once property value rises.
Your situation does not fit a single loan — you need a layered strategy.
Cash
Pay out of pocket and avoid interest entirely. Maximum savings and instant equity in your new ADU.
You have liquid savings and want zero debt or interest.
Rates, terms, and approvals shown are typical ranges and depend on credit, income, equity, and lender requirements — all financing is on approved credit (OAC). For curated answers and the best results for your specific situation, consult our finance team.
Your ADU Could Generate Strong Monthly Rental Income
Many homeowners in San Diego County rent their ADUs and cover their entire mortgage payment — plus earn extra income. Your ADU investment can pay for itself.
How We Work
A seamless, pain-free process from the initial idea to handing over the keys.
Consultation, Sign, Start
Begin your ADU journey with a personalized consultation. Discuss vision, sign agreements, and kickstart your project.
Design, Permit, Demo
Design your ideal ADU to meet local regulations. We handle the permit process efficiently, then swiftly move into demolition.
Build, Inspect, Finish
Watch your ADU take shape. We ensure quality through regular inspections and add the final finishing touches.
Your ADU Build, Phase by Phase
Know exactly what happens on-site at every stage of construction. No guesswork — just transparency.
Site Prep & Demo
Garage cleanout, demolition of existing structures, debris removal, and site preparation.
Site Prep & Demo
Garage cleanout, demolition of existing structures, debris removal, and site preparation.
Foundation & Underground Plumbing
Foundation reinforcement or new slab pour, underground plumbing lines, and drainage.
Foundation & Underground Plumbing
Foundation reinforcement or new slab pour, underground plumbing lines, and drainage.
Framing & Windows
Wall and ceiling framing, window and door rough openings, structural headers, and installation.
Framing & Windows
Wall and ceiling framing, window and door rough openings, structural headers, and installation.
Rough MEPs
Rough mechanical, electrical, and plumbing — wiring, pipes, HVAC ductwork, and panel upgrades.
Rough MEPs
Rough mechanical, electrical, and plumbing — wiring, pipes, HVAC ductwork, and panel upgrades.
Stucco & Roofing
Exterior stucco application, roofing materials, waterproofing, and weather barrier.
Stucco & Roofing
Exterior stucco application, roofing materials, waterproofing, and weather barrier.
Insulation & Drywall
Wall and ceiling insulation, drywall hanging, taping, mudding, and sanding.
Insulation & Drywall
Wall and ceiling insulation, drywall hanging, taping, mudding, and sanding.
Patch, Prime & Paint
Wall patching, primer coat, interior and exterior paint in your chosen colors.
Patch, Prime & Paint
Wall patching, primer coat, interior and exterior paint in your chosen colors.
Flooring, Baseboards & Doors
Flooring installation (LVP, tile, or hardwood), baseboard trim, and interior door hanging.
Flooring, Baseboards & Doors
Flooring installation (LVP, tile, or hardwood), baseboard trim, and interior door hanging.
Kitchen Cabinets & Countertops
Cabinet installation, countertop templating and installation, hardware and backsplash.
Kitchen Cabinets & Countertops
Cabinet installation, countertop templating and installation, hardware and backsplash.
Bathroom Tile & Finishes
Shower/tub tile, vanity installation, mirrors, fixtures, and bathroom accessories.
Bathroom Tile & Finishes
Shower/tub tile, vanity installation, mirrors, fixtures, and bathroom accessories.
Electrical, Plumbing & Mechanical Finishes
Light fixtures, outlets, switches, faucets, toilets, water heater, and HVAC trim-out.
Electrical, Plumbing & Mechanical Finishes
Light fixtures, outlets, switches, faucets, toilets, water heater, and HVAC trim-out.
Exterior Finishes
Exterior trim, lighting, walkways, landscaping touch-ups, and final cleanup.
Exterior Finishes
Exterior trim, lighting, walkways, landscaping touch-ups, and final cleanup.
Construction Duration
4–6 Months
Build Phases
12
Timelines may vary based on city permit processing times and project complexity.
Start Your ProjectService Areas
See What You Can Build in Your City
Tap your city to see <1>local ADU rules</1>, max size, height limits, setbacks, parking requirements, and typical permit timelines — everything you need to know before building.
Find Your City Below
Each city page shows the exact ADU regulations, what styles fit best, real local projects, and what your property qualifies for.
Don't see your city?
We likely serve your area too — and we'll walk you through your local ADU rules on the call.
Free Property Assessment
Tell us about your property and we'll create a custom ADU plan with estimated costs, rental income projections, and permit timeline.
75+
ADUs completed across our service area
30+
Combined Founder Years
5.0
Google Rating
Before & After
Drag the slider to reveal stunning garage-to-ADU transformations. These are real Vision ADU projects — no stock photos, no renders.
2nd St Garage Conversion — Santa Ana, CA
From cluttered 2-car garage to a stunning 400 sqft ADU with full kitchen, bedroom, and bathroom.
Select a Project
View Full Project GalleryWhy Choose Us
We prioritize your peace of mind and the quality of your investment.
Expert Craftsmen
We only use professional, vetted craftsmen for our projects.
Free Professional Consults
Includes 7 inspections, rough designs & full report — a tremendous value at no cost.
Licensed Architects
Face-to-face meetings to help design your dream space.
Fair & Transparent Process
Honest, clear, and transparent communication every single time.
Premium Materials
Exclusive contracts with award-winning manufacturing companies.
Unmatched Warranties
Ask our team about the specific workmanship and product warranties available for your project.
Written Construction Schedule
Construction schedules are set in your written agreement; permit processing times are estimates, not guarantees.
Licensed & Insured
Fully licensed, bonded, and insured for your total peace of mind.
Pay Per Stage
Pay only for completed milestones — never upfront for unfinished work.
30+ Years Combined Experience
Founders Barak Golan and Jaime Costilla bring over 30 years of combined residential construction experience. Vision ADU was founded in 2018.
Hablamos Español
Full bilingual service — clear communication in English y en español.
And So Much More
Free 3D renderings, in-house design studio, financing assistance, and more perks await.
See It. Touch It.
Choose It.
Most ADU builders show you a catalog and ask you to imagine the rest. At Vision ADU, we invite you to our team where you can see, touch, and select every finish for your project — flooring, countertops, cabinetry, fixtures, and more. It's the experience that separates us from everyone else.
Pick Your Finishes
Touch and compare real flooring, countertops, cabinetry, tile, fixtures, and hardware — all under one roof.
Preliminary Layouts & Design
Work with our design team to explore floor plans, layouts, and configurations tailored to your property.
One-Stop Shop
No running between tile stores, cabinet shops, and flooring warehouses. Select everything in a single visit.
Expert Guidance
Our team walks you through every option, answering questions and helping you make confident decisions.
By appointment, on-site or virtual
Serving all of San Diego County
The Clear Choice
Vision ADU vs. The Average Builder
Not all ADU builders are created equal. See how we stack up against the competition.
Our Team
Meet The Experts
Our leadership team brings decades of combined experience to every project.
Barak Golan
VP of Construction Management
Jaime Costilla
VP of Sales
Iris Pineda
VP of Finance
Alejandra P.
Field Construction Manager
Irving M.
Office Construction Manager
Sergio H.
Assistant Field Manager
Adrian H.
Project Specialist
Erick A.
Project Specialist
Flor C.
Lead Operations Manager
Gabriel V.
Social Media Manager
Jorge R.
Project Specialist
Juan G.
Project Specialist
Marquez A.
Project Specialist
Yadira P.
Pre-Construction Liaison
Ray R.
Project Specialist
Carlos R.
Project Specialist
Missed Deadlines
ADUs Completed Across Our Service Area
Architects & Crafters
Years Experience
FAQ
Frequently Asked Questions
Everything you need to know about building your ADU in San Diego County.
Still have questions? We'd love to help.
Earn Cash for Referrals!
Refer a friend or family member. When they break ground on their ADU project with us, you earn a referral bonus. It's that simple!
Start Referring Today
Follow Our Journey
Watch our latest projects, tips, and behind-the-scenes content. Follow us on social media to see what we're building right now.
This ONE Mistake Can Ruin Your ADU Project
Common pitfalls to avoid when building your ADU.
Watch on InstagramBefore You Build, Read This
Essential tips before starting your ADU project.
Watch on InstagramEver Wonder What We Do?
A behind-the-scenes look at our ADU building process.
Watch on InstagramReal Words From a Real Client
Hear directly from a satisfied Vision ADU homeowner.
Watch on InstagramNew ADU Project Underway
Follow along as we start a brand new ADU build.
Watch on Instagram