ADU Construction Service
Accessory Dwelling Unit Builder | Bay Area
Get a stylish ADU that adds value and rental income. Full-service design, permits, and construction by Animas Valley Construction.
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(408) 629-4047
Open Monday - Friday | 8:00 AM - 5:00 PM
What is an ADU?
An Accessory Dwelling Unit (ADU), often referred to as a granny flat, in-law suite, or backyard cottage, is a secondary housing unit built on the same property as a primary residence. From a construction contractor’s perspective, an ADU offers a versatile solution for property owners looking to maximize their space, increase property value, or generate rental income. ADUs can range from detached units and garage conversions to additions integrated into the main house. Constructing an ADU involves careful planning to meet zoning regulations, building codes, and utility requirements while ensuring the design complements the existing property.
As contractors, we focus on creating functional and aesthetically pleasing spaces that optimize the available land and meet the specific needs of homeowners, whether for accommodating family members, creating a home office, or providing long-term rental opportunities.
Building ADUs: Maximizing Space & Property Value
Advantages of a Detached ADU Construction
Increase Living Space
A detached ADU provides a perfect solution, giving you more space without having to move.
Rental Income
Many homeowners choose to rent out their ADU to help offset the cost of the construction and bring in additional income.
Versatile Use
A detached ADU can be used for a variety of purposes such as a home office, a rental unit, or even a mother-in-law suite.
Increased Privacy
Having a separate living unit, you can enjoy more privacy and peace of mind, knowing that you can have your own space.
Popular ADU & Garage Conversion Services
Here is a short list of our many remodeling services. Please feel free to contact us to request a quote!
Additional ADU & Garage Conversion Services
- Kitchen and Bathroom Installations
- Energy-Efficient Upgrades
- Permitting Assistance
- Accessibility Modifications
- Garage Remodeling for Living Space
- Garage Insulation and Flooring Installation
- Structural Reinforcement
- Window and Door Installations
- HVAC System Integration
- Soundproofing for Privacy
- Interior Finishing
- Utility Hookups
- Garage Partitioning
- Custom Storage Solutions
- And More!
Let's Get Started!
ADU Construction Resources
We design, permit, and build ADUs in San Jose—clear timelines, expert utility coordination, and detailed estimates. Request a quote today.
A detached Accessory Dwelling Unit (ADU) is a standalone residential structure located on the same lot as a primary single-family or multi-family home.
Garage to ADU, done right. We design, permit, and build beautiful, code‑compliant garage conversion ADUs across the Bay Area—tailored to your property, budget, and goals.
A Junior Accessory Dwelling Unit (JADU) is a compact, efficient living space—typically up to 500 sq. ft.—created within an existing home.
Latest Articles
ADU Construction Services
Maximizing 400 Square Feet: Small ADU Layouts That Feel Spacious
Attached vs. Detached ADUs: Which Is Best for Your Palo Alto Lot?
Garage Conversions: Turning Your Sunnyvale Garage into a Living Space
Everything You Need to Know About Building an ADU in Fremont
Using an ADU for Multi-Generational Housing in Santa Clara
