Custom ADUs Designed & Built in California — Permits, Plans & Construction Included
We bring your ADU vision to life — from zoning and permits to full construction, handled by a local, award-winning team.
- 3500+ Projects
- Fully Licensed & Insured
- Serving All of California
Let's bring your vision to life
From Zoning to Final Walkthrough — We Handle It All Under One Contract
No handoffs. No confusion. Just a streamlined, high-touch ADU delivery process that keeps you in control and on budget.
Project Management & Inspections
Custom Design & Plans
Permit Approval & Compliance
Full-Service Construction
Why Homeowners in California Choose Urbatect for ADU Projects
- 1. One-stop Solution with Expert Project Management, Design, Permit & Construction Team, so you avoid delays and communication breakdowns.
- 2. Custom Design Expertise so you can Maximize Your Lot. Our designers know how to work within tight city lots, setback rules, and zoning codes to help you get the most space and comfort possible.
- 3. Flexible And Customizable Design-build Solutions with Allowances to Choose Your Own Finishes.
- 4. Budget Transparency & Cost Control with Fixed Pricing That Protects Against Labor and Material Cost Increases For 16 Months.
- 5. 25–30% Faster Project Completion Without Compromising Quality.
- 6. Dedicated Permit Technician & 30% Faster Permit Expediting. California’s permitting process is complex. Our dedicated permit technician accelerates approvals and keeps your project moving.
- 7. Advanced technology & 3D visualization.
Real ADU Projects From Garage Conversions to Detached Units
Addition to a Senior Living Facility
Lynnwood
- Size: 120 units
- No of stories: 3
- Special Features: Addition to a ground up senior living facility with 120 units & cottage homes
Albany ADU
Albany, CA
- Size: 800 sq ft
- No of stories: 2
- Special features: ADU with ~200 sq ft patio with wood trellis
Amburose Custom Home
Fremont
- Size: 2,984 sq ft
- No. of stories: 2
- Special features: Grand Entry with Stone Accents
Arcilla ADU
San Diego
- Size: 375 sq. ft
- No of stories: 1
- Special features: Compact design and skylight
Camden ADU
Oakland
- Size: 222 sq. ft
- No of stories: 1
- Special features: Compact design & murphy bed
Castro Valley ADU & Office/Gym Space
Castro Valley, CA
- Size: 798 sq ft ADU + 639 sq ft attached office/gym space
- No of stories: 1
- Special features: Attached office/gym space & newly completed driveway
Custom Home
Santa Rosa
- Size: 3,512 sq ft
- No of stories: 2
- Special features: Modern farmhouse design
Flying Lady Winery
St. Helena
- Size: 40,305 Sq. ft.
- No of stories: 1
- Special Features: A 2 story residence accompanied by a winery building, featuring an outdoor tasting deck.
Gallegos ADU
Watsonville
- Size: 750 sq ft
- Number of stories : 1
- Special features: Exterior deck & front porch
Governor ADU
Harbor City
- Size: 704 sq ft
- No of stories: 1
- Special features: ADA Accessibility
Millbrook Residence
Santa Rosa
- Size: 3416 sq ft
- No. of stories: 2
- Special features: Modern farmhouse-style custom home
Milpitas ADU
- Size: 800 sq ft
- No of stories: 2
- Special Features: 2-story unit designed to maximize living space with private entry, open living, and full-home functionality.
Modern Custom Home
Santa Rosa
- Size: 4,444 sq ft
- No of stories: 2
- Special features: Symmetrical modern farmhouse with grand entry and high ceilings
Multi Family Development
Location: San Diego
- Size: 18 units
- No of stories: 4
- Special Features: Ground up 18 unit multifamily development
Paxton custom home
Santa Rosa
- Size: 2,683 sq ft
- No of stories: 2
- Special features: Modern 2-story home with pool, spa and stone facade
Perlita ADU
Los Angeles
- Size: 1,200 sq ft
- Number of stories : 2
- Special features: Roof deck
Phan ADU
San Leandro
- Size: 750 sq ft
- No of stories: 1
- Special features: Designed for flexibility
Salvator Apartments
Sacramento
- Size: 120 units
- No. of stories: 4
- Special Features: Developed comprehensive steel shop drawings for the ground-up, four-story apartment complex
Sawgrass Residence
Santa Rosa
- Size: 3,100 sq ft
- No of stories: 1
- Special features: Vaulted beam ceilings & open layout
Shaff ADU
Aptos
- Size: 685 sq ft
- No of stories: 2
- Special features: 2 Car garage
Sierra Home
Sacramento
- Size: 4,084 sq ft
- No of stories: 1
- Special features: Mediterranean-inspired home with pool
Smiley custom home
Olympic Valley
- Size: 3,529 sq ft
- No of stories: 2
- Special features: Modern architecture with high ceilings
St. Leo’s Apartments
Redwood
- Size: 15 units
- No. of stories: 3
- Special Features: Ground-up construction, 3-story wood structure consisting of 15 units
Tynan Village Apartments
Salinas
- Size: 171 units
- No of stories: 4
- Stucco/construction work on the most recent project remodeling
Whittier ADU
Whittier
- Size: 700 sq ft
- No of stories: 1
- Special features: Custom built design
Build Ready ADU Plans
We Know California ADUs Inside and Out
Our California team is deeply familiar with local building codes, parking exemptions, and energy compliance standards (like Title 24), helping you avoid project delays or expensive redesigns. Whether you’re building a backyard cottage, a garage conversion, or a two-story detached unit – we’ll ensure your ADU meets your needs and local regulations.
Build Smarter. Build Faster. Build with Urbatect.
Thousands of homeowners across California trust Urbatect to handle everything under one roof — and now, we’re helping San Jose homeowners unlock the full potential of their properties with ADUs that are as beautiful as they are functional.
Detached ADU
A Detached Accessory Dwelling Unit (ADU) is a standalone structure, built independently from your main house and any other buildings on your lot. This offers maximum privacy and flexibility, perfect for rental income, guest accommodations, a home office, or multi-generational living.
Attached ADU
While an Attached Accessory Dwelling Unit (ADU) integrates with your existing home by sharing a wall, it’s important to understand its independent nature. Unlike a simple extension, an attached ADU operates as a self-contained living space with its own private entrance. This ensures clear separation and privacy between the main house and the ADU.
Garage Conversion / Junior ADU (J-ADU) / ADU Over Garage
Your garage holds untapped potential! Converting it into a self-contained living space is a smart way to add value and flexibility to your property. Often, garage conversions fall under the category of an Accessory Dwelling Unit (ADU). When this conversion stays within the existing footprint of your single-family home, it might be classified as a Junior ADU (JADU). JADUs often have specific size limitations set by local ordinances and can be a cost-effective way to create an independent unit for family, guests, or even rental income. We can help you navigate the possibilities and determine if a JADU conversion is the right fit for your needs.
Basement & In-Law Unit Transformations
Have an underused basement or an existing in-law unit in your home? These are prime candidates for Accessory Dwelling Unit (ADU) conversions! Let us help you reimagine these spaces into comfortable, self-contained living areas. Whether you need extra income, guest accommodations, or a solution for multi-generational living, we’ll handle the design and build process to create a valuable ADU that meets local requirements.
Real Homeowners. Real Projects. Real Results.
How We Build ADUs — The Urbatect Way
Our Awards and Recognition
What Sets Us Apart
Licensed
& Insured
Ready to Build an ADU in California?
Start with a free consultation. We’ll provide:
- A project assessment, zoning & feasibility check, planning and layout of an ADU
- A personalized cost estimate & free site visit
- Guidance on timlines, permits and design possibilities