Thinking about building an ADU in Santa Clara but not sure where to start? W & W Builders Group is a trusted ADU contractor in Santa Clara, specializing in full-service accessory dwelling unit construction from concept to completion.
We manage every phase of your ADU project—including architectural design, engineering, city permits, and inspections—so you can move forward with confidence and zero stress. Our experienced project managers, designers, engineers, and builders work under one roof to ensure your ADU is built efficiently, correctly, and to the highest standards.
Whether you’re planning an ADU for rental income, a private guest house, or additional living space for family, we tailor every build to meet Santa Clara zoning requirements and your long-term goals. With W & W Builders Group as your ADU contractor in Santa Clara, you get expert guidance, transparent pricing, and quality craftsmanship built to last.
Learn more about our full ADU design and construction services.
In Santa Clara, homeowners can choose from three primary types of Accessory Dwelling Units (ADUs), each designed to meet different property layouts, zoning requirements, and lifestyle goals:
Detached ADU
A standalone structure built separately from the main home, often located in the backyard. Detached ADUs in Santa Clara are ideal for rental income, guest houses, or private living spaces, offering maximum privacy and flexibility.
Attached ADU
An ADU that is directly connected to the existing residence, typically created through a home addition. Attached ADUs are a popular option for Santa Clara homeowners looking to expand living space while maintaining a cohesive architectural design.
Conversion ADU (Garage or Interior Conversion)
This type of ADU repurposes existing space—such as a garage, basement, or unused interior area—into a fully functional living unit. Garage conversion ADUs are especially common in Santa Clara due to faster timelines and lower construction costs.
Homeowners planning an ADU often explore additional upgrades such as kitchen remodeling in Santa Clara, bathroom remodeling, full home remodeling, or home additions to improve comfort and long-term value.
Delivering your dream home with precision, on schedule and within budget.
Building an Accessory Dwelling Unit (ADU) in Santa Clara doesn’t have to be complicated when you work with the right team. As an experienced ADU contractor in Santa Clara, W & W Builders Group manages the entire process—from planning to final inspection—so your project stays organized, compliant, and stress-free.
We begin by evaluating your property, reviewing Santa Clara zoning and ADU regulations, and discussing your goals, budget, and timeline. This step helps determine the best ADU type—detached, attached, or conversion—for your lot.
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As a trusted ADU contractor in Santa Clara, we prepare a detailed proposal outlining your ADU’s scope of work, construction timeline, and budget. This step ensures full transparency from the start, clearly defining materials, structural requirements, and project milestones—so there are no surprises later in the process.
After a walk through of the space, Our in-house designers and engineers create custom ADU plans that meet Santa Clara building codes while maximizing space, functionality, and long-term value. Every design is tailored to your property and lifestyle needs.
We handle the full permitting process with the City of Santa Clara, including plan submissions, revisions, and coordination with city departments. This ensures your ADU project moves forward without unnecessary delays.
While the plans are making their way through the city, We assist you in selecting all design details and finish materials for your ADU, ensuring every choice complements the overall design and complies with Santa Clara building codes. Our team streamlines the material selection process so decisions feel organized—not overwhelming.
Once permits are approved, construction begins. Our dedicated project managers oversee scheduling, inspections, materials, and quality control—keeping your ADU build on time and on budget.
After and during construction, we coordinate all required inspections and finalize the project. Your new ADU is delivered fully compliant, move-in ready, and built to last. We conduct a detailed walkthrough with you to review every aspect of your ADU, ensuring the final result meets—and exceeds—your expectations.
Your ADU is complete and ready to enjoy. After final approvals and a comprehensive walkthrough, we hand over a fully finished, move-in-ready ADU built to Santa Clara codes and designed for long-term comfort, function, and value.
When it comes to building an ADU, working with a local ADU contractor in Santa Clara matters. W & W Builders Group specializes in full-service ADU construction tailored specifically to Santa Clara zoning laws, permitting requirements, and inspection processes.
We handle everything in-house—from ADU design and engineering to permits, construction, and final approvals—so your project stays organized, compliant, and efficient. Our local experience allows us to anticipate city requirements, reduce delays, and deliver a smooth ADU build from start to finish.
Local ADU contractor in Santa Clara with hands-on city experience
Design-build ADU services under one roof
Permit & inspection management with the City of Santa Clara
Transparent pricing & defined scope of work
Dedicated project manager for clear communication
High-quality craftsmanship built for long-term value
Whether you’re building a detached ADU, garage conversion, or attached ADU, we design and build each project to meet Santa Clara regulations while maximizing usability, comfort, and return on investment.
The timeline for building an ADU in Santa Clara depends on the ADU type, property conditions, and the city approval process. Working with a local ADU contractor in Santa Clara helps streamline each phase and avoid unnecessary delays.
1. Planning & Feasibility (2–4 weeks)
Property review, zoning verification, and initial layout planning to confirm ADU eligibility under Santa Clara regulations.
2. Design & Engineering (4–8 weeks)
Custom ADU design, structural engineering, energy calculations, and plan preparation tailored to Santa Clara building codes.
3. Permits & City Approval (8–16 weeks)
Plan submission, city review, corrections, and permit issuance. Timelines vary based on ADU complexity and city workload.
4. Construction Phase (3–7 months)
Site preparation, foundation, framing, utilities, inspections, and finishes. Garage conversions are typically faster than detached ADUs.
5. Final Inspections & Occupancy (1–2 weeks)
Final city inspections and approval for occupancy, allowing you to fully use or rent your ADU.
Most ADU projects in Santa Clara take 6 to 12 months from initial consultation to completion.
The cost of an ADU project in Santa Clara depends on several factors, including the type of ADU, square footage, design complexity, site conditions, and finish selections. On average, ADU projects in Santa Clara typically range from $150,000 to $450,000 or more.
Garage conversion ADUs are usually on the lower end of the cost range, while attached and detached ADUs tend to be higher due to new foundations, structural work, and utility connections. Additional factors such as permits, engineering requirements, and material choices can also impact the final price.
Working with an experienced ADU contractor in Santa Clara helps ensure accurate budgeting, clear scope planning, and transparent pricing before construction begins.
In Santa Clara, homeowners can build several types of Accessory Dwelling Units (ADUs) depending on their property size, layout, and local zoning requirements. The most common ADU types include detached ADUs, attached ADUs, and conversion ADUs.
A detached ADU is a standalone structure built separately from the main home, offering maximum privacy and flexibility. An attached ADU is connected to the primary residence, typically created through a home addition. Conversion ADUs involve transforming existing spaces—such as garages or interior areas—into livable units and are often the most cost-effective option.
A qualified ADU contractor in Santa Clara can help you determine the best ADU type for your property and ensure the design complies with city regulations and building codes.
Yes, building an ADU can significantly increase property value in Santa Clara. A well-designed and properly permitted ADU adds usable square footage, increases rental income potential, and makes a property more attractive to buyers seeking flexible living options.
In Santa Clara’s high-demand housing market, ADUs are often viewed as long-term investments that enhance both resale value and functionality. Whether used as a rental unit, guest house, or space for extended family, an ADU adds versatility that many buyers are willing to pay for.
Working with an experienced ADU contractor in Santa Clara ensures your ADU is built to local codes, designed efficiently, and positioned to maximize long-term property value.
Homeowners in Santa Clara have several options for financing an ADU project, depending on their financial situation and long-term goals. Common ADU financing options include home equity loans or HELOCs, cash-out refinancing, construction loans, and personal savings.
Some homeowners may also qualify for local, state, or utility-based incentive programs, depending on availability and eligibility. Financing options can vary based on credit, property value, and project scope.
An experienced ADU contractor in Santa Clara can help coordinate project budgeting and connect you with trusted lenders or financial professionals, but it’s always recommended to consult directly with a licensed financial advisor or lender to determine the best financing option for your situation.
The best way to plan for ADU construction in Santa Clara is to start with a clear understanding of your property’s zoning requirements, budget, and intended use for the ADU. Evaluating whether you want a detached ADU, attached ADU, or conversion ADU early on helps shape the design, timeline, and overall cost.
Working with a trusted local ADU contractor like W & W Builders Group makes the process significantly smoother. Our team assesses site conditions, manages design and permitting, and creates a realistic construction plan that aligns with Santa Clara building codes and approval processes. With early planning, a clearly defined scope, and experienced professional guidance, your ADU project stays efficient, compliant, and stress-free from start to finish.
Many homeowners coordinate ADU construction alongside full home remodeling in Santa Clara to improve layout, flow, and long-term functionality.
