ADU Construction Services in Santa Clara, CA
Looking for ADU construction in Santa Clara, CA? Animas Valley Construction builds detached ADUs, garage conversions, JADUs & more. Licensed contractor — request your free consultation today.
Professional ADU Construction Services in Santa Clara, CA
Attached, Detached, Conversions & More
Santa Clara homeowners are increasingly turning to accessory dwelling units as a smart way to add living space, generate rental income, and increase property value. Whether you need a backyard cottage for aging parents, a detached unit for long-term rental income, or a garage conversion to maximize your existing footprint, ADU construction is one of the most impactful investments you can make in your property.
At Animas Valley Construction, we specialize in designing and building custom ADUs throughout Santa Clara and the greater Silicon Valley area. Led by owner Daniel Zaragoza, who brings over 15 years of residential construction experience, our team handles every phase of the process — from initial design consultation and city permitting to foundation work and final finishes. We understand the unique challenges Santa Clara homeowners face, including navigating the city’s specific zoning requirements, setback regulations, and lot coverage limits.
California’s progressive ADU legislation, including AB 68 and SB 9, has made it easier than ever for homeowners to add secondary units to their properties. Santa Clara, in particular, has embraced these changes, streamlining the permitting process and reducing barriers for homeowners who want to build. According to the California Department of Housing and Community Development, ADU permit applications across the state have increased by over 60% since 2020 — and Santa Clara County remains one of the top regions driving that growth.
“With the rising cost of housing, ADU construction is becoming an increasingly popular option,” says Daniel Zaragoza, founder of Animas Valley Construction. “We help homeowners add value and space to their properties while navigating the entire construction process from start to finish.”
Whether your property is near the Santa Clara University campus, in the established neighborhoods along Benton Street, or in the newer developments near Levi’s Stadium, our team has the local expertise to deliver a high-quality ADU that complements your home and meets all municipal requirements. As a licensed general contractor (CA License #1027294), we ensure every project is fully permitted, inspected, and built to code.
Types of ADUs We Build in Santa Clara
Every property is different, and so is every homeowner’s vision. We offer a full range of ADU types to match your lot size, budget, and goals:
Detached ADUs
A standalone structure built separately from your primary residence, typically in the backyard. Detached ADUs offer maximum privacy for tenants or family members and allow for flexible floor plan design up to 1,200 square feet.
Attached ADUs
Built as an extension of your existing home, attached ADUs share at least one wall with the primary dwelling. This option is ideal for homeowners who want to minimize construction footprint while still creating a fully independent living space with its own entrance.
Garage Conversion ADUs
Transform your underutilized garage into a fully functional living unit with a kitchen, bathroom, and sleeping area. Garage conversions are one of the most cost-effective ADU options because the basic structure already exists.
Junior ADUs (JADUs)
A JADU is a smaller unit (up to 500 square feet) created within the existing footprint of your home. JADUs are perfect for homeowners who want to add a rental unit or guest suite without expanding their home’s physical structure.
Two-Story ADUs
For homeowners with limited lot space but ambitious plans, a two-story ADU maximizes square footage on a smaller footprint. These units are ideal for creating separate living and sleeping levels while maintaining a compact building envelope.
Custom-Designed ADUs
Purpose-built for families who want to keep loved ones close, these ADUs incorporate accessibility features like wider doorways, step-free entries, and single-level layouts. They provide independent living while keeping family members just steps away from the main home.
Request an ADU Construction Consultation in Santa Clara, CA
Free Consultations
Ready to explore what an ADU can do for your Santa Clara property? Our team is here to answer your questions, evaluate your lot, and provide a detailed project estimate. Fill out the form to get started, and one of our ADU specialists will be in touch within one business day.
- Phone: 408-629-4047
- Email: [email protected]
- Office Hours: Monday – Friday, 8:00 AM – 5:00 PM
- Office Location: San Jose, CA 95123
- License #: 1027294
About Animas Valley Construction
Top Construction Company in Santa Clara
Animas Valley Construction is a San Jose-based general contractor founded by Daniel Zaragoza, who brings over 15 years of hands-on residential construction experience to every project. Since incorporating in 2020, we’ve built a reputation across the Bay Area for delivering high-quality kitchen remodels, bathroom renovations, home additions, and custom ADUs. In 2023, we expanded our services to include dedicated ADU construction, helping homeowners throughout Silicon Valley add value and livable space to their properties. We’re fully licensed, insured, and committed to transparent communication on every build.
What Our Clients Say
I found Daniel, the owner, through recommendations from two neighbors who were extremely satisfied with his remodeling work. I also highly recommend Daniel. He completed my two-bathroom remodel beyond my expectations, both technically and aesthetically. The project passed all required city inspections and stayed on budget, all while my family remained in the home throughout the construction.
L. V.
Yelp ReviewWe had a fantastic experience with Animas Construction! They updated our living room, kitchen, family room, and bathroom — and we couldn’t be happier with the results. Daniel was incredibly supportive and attentive throughout the entire process. He really listened to our ideas and offered thoughtful suggestions to help improve our living spaces. We were also amazed at how efficiently Daniel and his team worked, completing everything on time without compromising quality. Their professionalism stood out, and they made sure to clean up thoroughly at the end of each day. Highly recommend Animas Construction!
Delia Besio
Google ReviewI contacted Daniel to remodel our Master bedroom…. Daniel showed up on time and gave us an honest and sincere evaluation to the project we had in mind. We are definitely pleased with his input to our concerns and we are executing his recommendations one phase at a time and we are at phase 2 out of 3. I will certainly provide another review when we are done with phase 3 … let me just say for now that so far so GOOD. So thank you Daniel Animas.
Miguel Dabliz
Google ReviewWhy Choose Animas Valley Construction for Your Santa Clara ADU
Owner-Led Project Management
Every ADU project is personally overseen by our founder, Daniel Zaragoza. This hands-on approach ensures consistent quality, clear communication, and accountability from the first consultation through final walkthrough.
Years of Residential Construction Experience
Our team has spent over a decade and a half building, remodeling, and renovating homes across the Bay Area. That depth of experience translates into fewer surprises, smarter solutions, and a finished product built to last.
Full-Service ADU Construction
We handle everything — design consultation, architectural planning, city permitting, construction, and final inspection. You get a single point of contact for your entire project, eliminating the hassle of coordinating multiple contractors.
Local Knowledge of Santa Clara Regulations
We’re familiar with Santa Clara’s specific zoning ordinances, setback requirements, and ADU permitting procedures. That local expertise helps us avoid costly delays and keep your project moving on schedule.
Budget-Conscious Construction
We believe quality ADU construction shouldn’t break the bank. Our team focuses on cost-efficient material sourcing, smart design alternatives, and transparent pricing so you know exactly where every dollar goes — no hidden fees or surprise change orders.
Licensed, Bonded & Insured
Animas Valley Construction holds an active California Contractor’s License (#1027294) with full bonding and liability insurance. That means your investment is protected and your project meets all state and local building codes.
Serving Santa Clara Neighborhoods and Nearby Cities
Animas Valley Construction proudly serves homeowners throughout Santa Clara and the surrounding communities. Whether your property is in the tree-lined streets near Central Park, the family-friendly neighborhoods of Pomeroy Green, or the established homes along El Camino Real, we bring the same level of craftsmanship and attention to detail to every project.
We also serve homeowners in nearby cities, including:
- San Jose
- Sunnyvale
- Campbell
- Mountain View
- Palo Alto
- Los Gatos
- Cupertino
- Milpitas
- Morgan Hill
View our full service area to see if your community is covered.
Construction Resources for Santa Clara
Top Construction Company in Santa Clara
Why a Home Addition is Often Better Than Moving in Santa Clara
The Ultimate Guide to Kitchen Remodeling in Santa Clara
Using an ADU for Multi-Generational Housing in Santa Clara
Frequently Asked Questions About ADU Construction in Santa Clara
How much does it cost to build an ADU in Santa Clara, CA?
ADU construction costs in Santa Clara typically range from $150,000 to $350,000 or more, depending on the unit type, size, and level of finishes. Garage conversions tend to fall on the lower end since the shell structure already exists, while detached new-construction ADUs with premium finishes will be at the higher end. During your consultation, we provide a detailed estimate tailored to your specific property and design goals.
How long does it take to build an ADU in Santa Clara?
Most ADU projects take between 8 and 14 months from initial design to completion, including the permitting phase. The City of Santa Clara has been working to streamline ADU permits, but timelines can vary depending on project complexity and plan review cycles. We manage the entire timeline and keep you informed at every milestone.
Do I need a permit to build an ADU in Santa Clara?
Yes, all ADU construction in Santa Clara requires building permits issued by the city’s Planning and Inspection Division. California state law mandates that ADUs meet specific building, fire, and safety codes, and the permitting process ensures compliance. Our team handles the full permit application and approval process on your behalf so you don’t have to navigate the bureaucracy alone.
Can I rent out my ADU in Santa Clara?
Absolutely. California law allows homeowners to rent out ADUs as long-term rentals, and Santa Clara does not currently impose owner-occupancy requirements for ADUs permitted after January 1, 2020. This makes ADUs an excellent source of passive income, especially given the high rental demand across Silicon Valley. We can design your unit with rental-ready features to maximize its appeal to prospective tenants.
What is the maximum size allowed for an ADU in Santa Clara?
Under current California regulations, detached ADUs can be up to 1,200 square feet for units with two or more bedrooms, and up to 1,000 square feet for one-bedroom or studio units. Junior ADUs are capped at 500 square feet and must be built within the existing footprint of the primary residence. Local zoning may impose additional lot coverage or setback requirements, which we evaluate during your initial consultation.
Will building an ADU increase my property taxes in Santa Clara?
Building an ADU will trigger a reassessment of the new construction only — not your entire property. Under California’s Proposition 13, your existing home’s assessed value remains protected, and only the added value of the ADU is subject to reassessment. For most homeowners, the rental income generated by the ADU far outweighs the modest increase in annual property taxes.
Does Animas Valley Construction handle ADU design and permitting?
Yes, we are a full-service ADU contractor that manages every phase of the project. From conceptual design and architectural drawings to engineering, permit submissions, and construction, we coordinate it all under one roof. This integrated approach saves you time, reduces miscommunication, and ensures your project stays on track from day one.