San Jose ADU Builders You Can Trust
Custom ADU Builders
in San Jose, California
- 30+ Years Combined Experience
- Licensed, Bonded, and Insured
- 200+ ADUs Built
200+ Happy Customers
San Jose ADU Builder
Custom ADU Builders
in San Jose, California
- 30+ Years Combined Experience
- Licensed, Bonded, and Insured
- 200+ ADUs Built
We Build ADUs in San Jose
MODELS
ADU Models in San Jose
Secondary Homes from 328 SQFT to 1,200 SQFT
Turnkey Custom ADU Calculator
300
SF
Choose Your ADU Size
Why Build an ADU in San Jose?
- Increase Property Value – ADUs significantly boost your home’s market appeal.
- Earn Passive Income – Use your ADU as a short-term rental or a long-term lease.
- Multigenerational Living – Create a private space for aging parents or young adults.
Process
Our Seamless ADU Building Process ADUs
From consultation to handing over the keys, we manage every step to ensure your San Jose ADU is built right—on time and on budget.
Consultation
We start with a free consultation to understand your goals, property layout, and budget. Whether you're planning a rental unit or space for family, we'll walk you through the possibilities and local ADU requirements.
Pre-Construction
Our team handles everything from permits to plans. We’ll guide you through zoning, engineering, and design – making sure your ADU is fully approved by the City before we build.
Construction
Once permits are in place, our skilled crew gets to work. We manage every step of the build with precision and care, keeping your timeline and budget on track while delivering top-tier craftsmanship.
Hand off Keys
When your ADU is complete, we’ll walk you through the final inspection and turn over the keys. All that’s left is to move in, rent it out, or start enjoying your new space.
Reviews
What our clients say
Why Build an ADU in San Jose?
See why 1,000s of home owners are building ADUs
The Perfect Retirement Plan
Thousands of retirees are choosing
an ADU over expensive retirement
homes in San Jose
Increase Living Space
Expand living space up to
1,200 SQFT
The Perfect Retirement Plan
Thousands of retirees are choosing
an ADU over expensive retirement
homes in California
Thousands of retirees
are choosing an ADU over
expensive retirement homes
in California
Types of ADUs We Build in San Jose
We build all types of ADUs in San Jose — including attached units, detached backyard homes, and garage conversions — designed to fit your lot, needs, and budget.
Attached ADUs
Built as an extension of your existing home, attached ADUs blend seamlessly with your layout while adding valuable square footage.
Detached ADUs
Standalone backyard homes that offer privacy, flexibility, and full living space — perfect for rentals or extended family.
Garage Conversions
Transform your existing garage into a livable, code-compliant unit ideal for guests, tenants, or a home office.
No Cookie Cutter ADUs Here - Each One is Uniquely Yours
San Jose ADU Regulations Made Simple
Thinking of building an ADU in San Jose? Our team at IMKAT Construction is here to guide you through the city’s requirements and ensure your project meets all local building codes. Here are some of the key regulations for accessory dwelling units in San Jose:
Maximum ADU Size
San Jose allows ADUs up to 1,200 square feet, depending on your lot size and zoning district. Junior ADUs (JADUs) are limited to 500 square feet and must be within the primary residence.
Setback Rules
A minimum 4-foot side and rear setback is required for detached ADUs. Front yard setbacks depend on the zoning designation of the property.
Parking Requirements
No additional parking is required if your property is within half a mile of public transit, such as a bus stop or light rail station. Garage conversions do not require replacement parking.
Utility Connection
New detached ADUs require separate utility hookups for sewer, water, and electricity. Attached ADUs may share existing utility systems.
Height Limits
Detached ADUs in San Jose can be up to 16 feet tall in most single-family zones. Taller structures may be allowed with additional review, especially in multi-family zones.
ADU Zoning
ADUs are permitted in most residential zoning districts in San Jose, including R-1 and R-2. Before starting construction, it’s important to verify your lot’s eligibility and specific zoning regulations.
Projects
Our San Jose ADU Projects
Why Us?
Why Build with Imkat Homes?
San Jose #1 ADU Builder
General Contractors
Other ADU Contractors
Specializing in ADUs
ADU Built in Just 8 Months
Financing
3 Months of Free Assisted Living for Retirees
Over 200+ ADUs Built
General Contractors
Other ADU Contractors
Specialize in ADUs
Free Assisted Living
Financing
200+ ADUs Built
FAQ
Frequently Asked Questions About ADUs
Everything You Need to Know About Building an ADU: Costs, Permits, Benefits, and More
