ADU Construction Services in Milpitas, CA
Animas Valley Construction builds custom ADUs in Milpitas, CA. Detached, attached, garage conversions & more. Licensed contractor. Request your free quote today.
Professional ADU Construction Services in Milpitas, CA
Attached, Detached, Conversions & More
Milpitas 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 a family member or a fully independent rental unit, Animas Valley Construction provides full-service ADU construction in Milpitas and throughout Santa Clara County.
As a licensed California general contractor (License #1027294), we handle every phase of your ADU project — from initial design consultation and city permitting through final construction and inspection. Our owner, Daniel Zaragoza, brings over 15 years of residential construction experience to every project, ensuring your new ADU is built to the highest standards of quality, functionality, and compliance with Milpitas building codes.
The City of Milpitas permits ADUs across all residential zones and follows both state and local ADU regulations. Detached ADUs can be built up to 1,200 square feet with a maximum height of 16 feet, and minimum setbacks of just four feet from rear and side property lines. Milpitas also offers helpful resources like its ADU Mondays program, where homeowners can schedule virtual meetings with city planning and building staff to explore ADU development on their property.
We understand the local permitting process inside and out. Compliant ADU applications in Milpitas are typically reviewed within 60 days, and our team prepares complete permit packages — including architectural drawings, structural calculations, site plans, and Title 24 energy documentation — to help keep your project on schedule. When you work with Animas Valley, you’re partnering with a contractor who knows Milpitas regulations and is committed to making ADU construction a smooth, stress-free experience.
Types of ADUs We Build in Milpitas
Detached ADUs
A detached ADU is a standalone structure built separately from your primary home, typically in the backyard. These units offer maximum privacy and design flexibility, with sizes up to 1,200 square feet allowed under Milpitas zoning regulations.
Attached ADUs
An attached ADU is added directly onto your existing home, sharing at least one wall with the primary residence. This option is often more cost-effective because it leverages your home’s existing foundation and utility connections.
Garage Conversion ADUs
Transform your underutilized garage into a fully functional living space without the cost of ground-up construction. California law prohibits cities from requiring replacement parking when you convert a garage to an ADU, making this one of the most accessible options available.
Junior ADUs (JADUs)
A JADU is a compact unit of up to 500 square feet created within your existing home’s footprint, ideal for homeowners looking for a lower-cost entry into ADU ownership. In Milpitas, you can build both a JADU and a standard ADU on the same lot.
Above-Garage ADUs
A second-story unit built on top of an existing or new garage, maximizing your lot’s vertical space. This design preserves your parking and yard area while adding a fully independent dwelling above.
Multi-Generational ADUs
Repurpose existing interior space — such as a basement, bonus room, or underused portion of your home — into an independent living unit. Conversion ADUs require proper egress, ventilation, and independent access but can be one of the fastest and most affordable paths to adding an ADU.
Request an ADU Construction Consultation in Milpitas, CA
Free Consultations
Ready to explore your ADU options? Our team provides complimentary consultations where we assess your property, discuss your goals, and outline a clear path from concept to completion. Whether you’re considering a detached backyard ADU or a garage conversion, we’re here to guide you through every step. Fill out the form or contact us directly to get started.
- Phone: 408-629-4047
- Email: [email protected]
- Office Hours: Monday – Friday, 8:00 AM – 5:00 PM
- Address: 5361 Armonk Court, San Jose, CA 95123
- License #: 1027294
About Animas Valley Construction
Top Construction Company in Milpitas
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. As a fully licensed and insured California contractor (License #1027294), we specialize in ADU construction, kitchen remodeling, bathroom remodeling, and home additions throughout Santa Clara County and the greater Bay Area. Our commitment to quality craftsmanship, transparent communication, and budget-friendly solutions has made us a trusted partner for homeowners across Silicon Valley. Learn more about our team and values.
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 ReviewServing Milpitas Neighborhoods and Nearby Cities
Animas Valley Construction is proud to serve homeowners throughout Milpitas, including established neighborhoods like Sunnyhills, Calaveras Hills, Augustine, and the areas surrounding the Great Mall and Milpitas BART station. Whether your property is on a quiet residential street near Cardoza Park or in a newer development off Jacklin Road, we bring the same level of expertise and dedication to every project.
Our service area extends well beyond Milpitas. We also provide ADU construction and home remodeling services to homeowners in neighboring cities including San Jose, Santa Clara, Fremont, Sunnyvale, Mountain View, Campbell, and throughout the greater Silicon Valley region. No matter where you’re located, our team is familiar with the local building codes and permitting processes that apply to your project.
Additional Construction Resources for Milpitas
Top Construction Company in Milpitas
Choosing the Right Home Builder in Milpitas
Garage Conversion vs. Building an ADU in Milpitas: Which Path Is Right for You?
The Ultimate Bathroom Remodeling Guide for Milpitas Homeowners
Frequently Asked Questions About ADU Construction in Milpitas
ADU construction costs in Milpitas vary depending on the type and size of the unit. Garage conversions typically range from $100,000 to $180,000, while detached new construction can run between $200,000 and $400,000 depending on square footage and finish level. During your free consultation, we provide a detailed estimate tailored to your specific property and goals.
Most ADU projects take between six and twelve months from design through completion, depending on the complexity of the build. The City of Milpitas typically reviews compliant permit applications within 60 days, and construction timelines range from three to eight months after permits are approved. We keep you informed at every milestone so there are no surprises.
Under current Milpitas regulations, detached and attached ADUs can be up to 850 square feet for a studio or one-bedroom unit and up to 1,000 square feet for a two-bedroom unit. Properties in the Hillside Combining District may be allowed up to 1,200 square feet. We review your specific lot during the consultation to confirm exactly what you can build.
No, there is no owner-occupancy requirement for standard ADUs permitted after January 1, 2020, under California state law. However, if you build a Junior ADU (JADU), the property owner must reside in either the primary home or the JADU itself. We can walk you through all the occupancy requirements during your initial consultation.
In many cases, no. Milpitas does not require additional parking for ADUs located within one-half mile of public transit, which includes properties near the Milpitas BART station and VTA routes. Garage conversions are also exempt from replacement parking requirements under California law. We assess your property's parking situation as part of our planning process.
Yes, both ADUs and JADUs can be rented in Milpitas, but they cannot be used as short-term rentals for stays under 30 days. A well-built ADU can generate meaningful monthly rental income, making it an excellent long-term investment. We design and build units with rental appeal in mind, optimizing layouts and finishes to attract quality tenants.
Absolutely. We prepare and submit complete permit packages to the City of Milpitas Planning Department, including all required architectural drawings, structural engineering reports, site plans, and Title 24 energy compliance documentation. Our team manages the entire permitting process so you don't have to navigate city departments on your own. Contact us to get started.
