In the heart of Silicon Valley, space is more valuable than ever. An Accessory Dwelling Unit (ADU) offers a flexible way to expand living space, create rental income, or support multigenerational living — without leaving your property.
Whether you’re reimagining a detached garage or adding a modern backyard home, an ADU in San Jose provides both immediate functionality and long-term financial benefits.
Top reasons homeowners build ADUs in San Jose:
Every neighborhood in San Jose — from Willow Glen to Almaden Valley — has its own character and lot conditions. We tailor each ADU design to fit seamlessly within the site and surrounding architecture.
Building an ADU in San Jose requires careful coordination with city planning and utility services. We provide full-service management — from design to permitting to construction oversight — ensuring your project runs smoothly and meets all local requirements.
The cost of an ADU in San Jose depends on factors like lot access, soil conditions, and finishes. Average price ranges:
Additional costs may apply for hillside grading, foundation work, or premium materials. We provide clear cost breakdowns upfront, so you can make informed investment decisions.
Use our San Jose ADU Cost Calculator below for a quick estimate — or schedule a consultation for a detailed project proposal.
Our San Jose floor plans are designed for the way people live and work today. Whether you need a rental-ready studio or a spacious two-bedroom layout, each plan emphasizes natural light, storage efficiency, and a modern aesthetic that fits Bay Area architecture.
Explore our ADU floor plans to find inspiration for your property — from sleek modern cottages to warm, minimalist backyard homes.
At Ataman Studio, we bring deep experience with San Jose’s zoning, permitting, and energy codes. Our designs combine modern California architecture with practical construction management — ensuring that your ADU adds value, livability, and long-term durability.
We handle the entire process so you don’t have to: design, documentation, coordination, and final inspection. The result? A high-quality, compliant ADU built on time and on budget.
Serving all San Jose neighborhoods — Willow Glen, Almaden Valley, Rose Garden, Cambrian, and beyond.
Office: 13151 Fountain Park Dr, Los Angeles, CA 90094​
Phone: (213) 618-5456
Email: info@atamanstudio.com
Most projects take 8–12 months, depending on design complexity and city review timelines.
Yes. All ADUs require city permits, Title 24 energy compliance, and engineering documentation — which our team fully manages.
Yes, ADUs can be rented long-term. However, short-term rentals (like Airbnb) are restricted by city ordinance.
Detached ADUs can be up to 1,200 sq ft, depending on lot size and zoning. We’ll verify all site-specific limits during the design stage.
Yes, several lenders in San Jose offer ADU-specific loan programs. We can help you explore financing options that fit your goals.
From design to permits to construction management — we handle every detail, ensuring your new ADU enhances comfort, flexibility, and property value. Call (213) 618-5456 or request your free consultation to get started today.
