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

Integrated team of designers, permit technicians, and project managers who turn great ideas into approved plans 25-30% faster than the industry norm

Urbatect brings every discipline together — from sketches to permit-ready plans, so your design stays on budget, approvals move faster, and you navigate California’s toughest cities with ease.

Real ADU Projects — From Garage Conversions to Detached Units

Albany ADU

  • Size: 800 sq ft
  • No of stories: 2
  • Special features: ADU with ~200 sq ft patio with wood trellis

Phan ADU

  • Size: 750 sq ft
  • No of stories: 1
  • Special features: Designed for flexibility

Castro Valley ADU & office/gym space

  • 798 sq ft ADU + 639 sq ft attached office/gym space
  • No of stories: 1
  • Special features: Attached office/gym space & newly completed driveway

Perlita ADU

  • Size: 1,200 sq ft
  • No of stories: 2
  • Special features: Roof deck

Shaff ADU

  • Size: 685 sq ft
  • No of stories: 2
  • Special features: 2 Car garage

Governor ADU

  • Size: 704 sq ft
  • No of stories: 1
  • Special features: ADA Accessibility

Gallegos ADU

  • Size: 750 sq ft
  • No of stories: 1
  • Special features: Exterior deck & front porch

Camden ADU

  • Size: 222 sq. ft
  • No of stories: 1
  • Special features: Compact design & murphy bed

Whittier ADU

  • Size:700 sq ft
  • No of stories: 1
  • Special features: Custom built design

Arcilla ADU

  • Size: 375sq ft
  • No of stories: 1
  • Special features: Compact design and skylight

Build Ready ADU Plans

Fast track your design and construction process!

Model 13 – 1188SF, 3 Bed and 2 Bath

  • 1188
  • 3
  • 2
Arrow icon

Model 12: 950SF, 2 Bed and 2 Bath

  • 950
  • 2
  • 2
Arrow icon

Model 11 – 900SF, 2 Bed and 2 Bath

  • 900
  • 2
  • 2
Arrow icon

Model 10- 800SF, 2 Bed and 2 bath

  • 800
  • 2
  • 2
Arrow icon

Model 09- 800SF, 2 Bed and 2 bath

  • 800
  • 2
  • 2
Arrow icon

Model 08: 792SF, 2 Bed and 2 bath

  • 792
  • 2
  • 2
Arrow icon

Model 07: 700SF, 2 Bed and 1 Bath

  • 700
  • 2
  • 1
Arrow icon

Model 06: 650SF, 2 Beds and 1.5 Bath

  • 650
  • 2
  • 1.5
Arrow icon

Model 05 – 634SF, 1 Bed and 1 Bath

  • 634
  • 1
  • 1
Arrow icon

Model 04: 600SF, 1 Bed and 1 Bath

  • 600
  • 1
  • 1
Arrow icon

Model 03 – 500SF, 1 Bed and 1 Bath

  • 500
  • 1
  • 1
Arrow icon

Model 02: 500SF, 1 Bed and 1 Bath

  • 500
  • 1
  • 1
Arrow icon

Model 01: 420SF, Studio, 1 Bath

  • 420
  • 1
  • 1
Arrow icon

Our Step by Step Process

Free Consultation – A 30-minute Consultation to understand your goals, budget, timeline and answer your top questions.

Feasibility Review – We evaluate your project, check zoning & applicable building code, local regulations and flag opportunities or constraints upfront.

Collaborative Design Development – We translate your vision into schematic plans informed by zoning and site conditions, with 3D renderings or models to help you visualize the space. Each round of revision is reviewed with you to refine layouts, incorporate feedback, and align on scope before moving into final design development. Our construction and design teams collaborate from day one to ensure your plans stay aligned with your approved budget; minimizing surprises later.

Structural Design & Permit Set – We deliver a complete set of permit ready plans including design, structural design and Title 24 (energy compliance services), which are coordinated in-house for fewer delays.

Budget Alignment – Our construction and design teams collaborate from day one to ensure your plans stay aligned with your approved budget; minimizing surprises later.

Permitting & Approvals – Our dedicated permitting specialist handles all submissions and coordinates with your local city or county to get your building permits approved efficiently.

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.


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.

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.

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.

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.

1,000+ Happy Customers.
Real Stories, Real Results.

How We Build ADUs — The Urbatect Way

Site Discovery & Assessment
1
Feasibility & Conceptual Designs
2
Detailed Design Development
3
Permitting
4
Build & Execute
5
Walkthrough & Completion
6

Our Awards and Recognition

award1
award4
award
award6
award7
houzz-awards
award5
award2

What Sets Us Apart

years of experience
0 +
projects
0 +
California Cities Served
0 +

Licensed

& Insured

Ready to get started with an ADU or custom home?

Start with a free consultation. We’’ll provide:
  • A project assessment, zoning & feasibility check, planning and layout options
  • A personalized cost estimate
  • Guidance on timelines, permits and design possibilities