San Jose, CA  >

Accessory Dwelling Units (ADU) Builders and reliable garage conversion contractors
ADU (Accessory Dwelling Unit) Contractors and garage conversion builders

Accessory Dwelling Unit (ADU) Contractor in Santa Clara, CA

First step of working with Wise Builders is meeting and looking into the construction plans for your home remodel
Step 1: Let's Get Started
Initial Contact

During our first conversation, our team will ask you a handful of general questions regarding your ADU or garage conversion project so that we can better understand your needs and desires. If it feels like we are a good fit for each other, we will assign an experienced project manager to visit your property for your free in-home consultation.

Free In-Home Consultation

The project manager will arrive on the agreed-upon day & time and examine the location of where you plan to build your ADU. Your project manager will be your main point of contact from this point on so that they can truly understand your vision, style, and design ideas for your ADU project in Santa Clara.

Scope of Work

If all goes well during the in-home appointment, your project manager will work with you and our office to break down the scope of the project. This phase will include an estimate of pricing for the project, the anticipated process, and the expected timeline for the completion of your new Accessory Dwelling Unit.

Iphone of website of Wise Builders contractors
Wise Builders truck with brand logo and company information
Free in-home consultation

Allow us to show you what we can do for you with our no-obligation, free in-home consultation.

Step 2: Build Framework
Meet At Our Showroom

It is incredibly important to us that you’re able to touch and feel the material finishes available to you so that you can make a confident decision on the design of your ADU. Our showroom in San Jose will feature beautifully designed cabinetry, a variety of exquisite tiles, and many more materials to complete your ADU project in the city of Santa Clara.

Finalize Gameplan

As you decide on your design and finishes, we will provide you with the final drawings, layout, design, and 3D renderings so that you can truly see how your ADU or garage conversion will look when we complete your project. Your project manager will walk you through all of the possible choices and outcomes you may have before finalizing your project in Santa Clara.


At this point, the excitement has built up and we will both be incredibly eager to get started on your dream project! So upon review of all the finalized details, your project manager and our office will work with you to review and sign the contract so that we can finally begin building your ADU unit!

Wise Builders showroom in san jose, california with cabinetry and door examples for your home remodel
Doors and cabinet shopping at the Wise Builders Showroom in San Jose for your complete home Remodel
Step 3: Pre-Construction
Obtain Permits

Our team will immediately begin obtaining permits and scheduling appointments with the necessary trade experts to guarantee your home is in the optimal state needed to begin the ADU construction phase. Your project manager will handle this process from A to Z.

Time To Shop!

This is the fun part! Time to shop! You and your project manager will take the time to review all the remaining materials, fixtures, and accessories needed for your ADU Design-Build from our most trusted vendors. These selections will give that final touch to your beautifully designed accessory dwelling unit in Santa Clara.


Consistent communication is crucial for a successful process and the peace-of-mind knowing that your project is moving along. Due to our expertise and the care that our project managers have for their projects, you can expect a smooth and transparent process to the completion of your new ADU home in Santa Clara.

Step 4: Construction Phases

The initial phase of the actual construction will consist of us demolishing the area and removing all of the unwanted materials. Cleaning out the space in a timely manner will ensure that we stay on track with our Santa Clara ADU housing project timeline and prepare us for the framing phase.

Framing and Preparation

Preparation is a key part of a truly smooth installation process, so it is incredibly important that we inspect the space after it’s been demolished and begin the process of framing the structure. As framing is completed, we can then stucco the exterior, interior drywall, plumbing, and other aspects needed to move on to the installation phase.


It’s finally here! The installation process is where your brand new ADU or garage conversion begins to take shape and finally comes to life. Your project manager will ensure that each step is handled with care so that everything is installed in a clean and perfect manner.

Interior home remodel during the construction phase by Wise Builders
Finishing touches of the interior remodel before final inspection by Wise Builders
Step 5: Wrapping Up & Closeout
Review Final Touch-Ups

Once we complete the installation, your project manager will walk through the entire project with you and review the final punch list to ensure that everything was covered and handled properly. Any adjustments or minor tweaks will be handled in this phase of your accessory dwelling unit project.

Final Inspection

While it is hard to say goodbye, we know how excited you will be to finally enjoy your beautiful new ADU home. So this final walk-through with your project manager will be the final inspection needed to bring your ADU project to completion in Santa Clara.

5-Star Review!

If your project manager made your ADU construction process seamless and enjoyable, then let’s give them the praise they deserve! You can find us on all review websites like Yelp and Google, and it truly warms our hearts to hear the good news directly from you!

Wise Builders logo and branded hard hat, which is the construction hat
Ready to move forward?

Begin your home remodeling project with us today with our free in-home consultation.

A Santa Clara ADU can serve as a secondary living space with all the necessary housing components required to live comfortably. There are many different types of ADUs one can build, but one thing they all have in common: they are beneficial to homeowners. ADUs can provide passive income and add long-term value to your home.  

The demand for ADU in the City of Santa Clara is on the rise because they are one of the best solutions to the housing problem in California. There are many different categories ADUs are divided into and the decision to build one can be tough. However, with proper guidance and an experienced general contractor, you have nothing to worry about!

An ADU Contractor in Santa Clara is responsible for taking care of the ADU building process from A-Z. It is important that your local ADU contractor has experience and familiarity with the zoning laws and regulations. Wise Builders prides itself on providing its clients with a solid understanding of the different types of ADUs, the various requirements and costs, and of course the benefits for each ADU home

What is an Accessory Dwelling Unit?

An accessory dwelling unit is an additional residence on a single-family residential property. ADU is the legal and administrative terminology for an independent unit that shares a larger, principal residence’s building. While the property cannot be purchased individually, it can be used as extra housing for a relative or can be rented out to generate extra income. 

What Qualifies as an ADU in the City of Santa Clara?

Additions to Home in Santa Clara may not seem like they have a wide range of requirements and regulations, but there are rules you need to follow in order to construct a legal ADU. ADU’s can be attached or detached, but it needs to be built on the same property as a primary Home. Your ADU Santa Clara must be self-contained units with a full kitchen and restroom.

Is an Accessory Dwelling Unit Legal in Santa Clara?

A Santa Clara County ADU is completely legal. ADU construction is not a new concept, however, it has recently grown in popularity considering the current housing market in California. However, it is important to hire qualified ADU contractors in order to ensure you get the necessary permits and follow local zoning laws.   

Benefits of Building an ADU in Santa Clara, CA

There are various benefits to building an ADU Santa Clara County. It can be used as a home office or an extra guest room for family and friends. With the right ADU builders, the process can be cost friendly, easy, and increase the value of your home. 

Remodeling Homes in Santa Clara, CA is another way to add long-term value to your home. 

How Much Value does an ADU Add?

Santa Clara County ADU may add more value to your property than you are aware of. Depending on the land and the residential zone, ADUs can increase the value of your home by up to 30-50%.

Rent Your ADU Unit in Santa Clara

Renting out your Santa Clara ADU is a great way to earn additional income. Monetizing from your ADU can help maintain your additional unit and help with mortgage payments on the main property. 

In order to rent your ADU for top dollar, you should consider looking for reliable Kitchen Remodeling Companies in Santa Clara, CA. This will provide your rentee with the best possible experience, which is why ensuring you hire a wise builder, no pun intended, is a smart move.

What Types of ADU Homes Can You Build In Santa Clara?

There are multiple different ways you can build your ADU Santa Clara. Depending on the layout of your home, there will be different forms that may be more appropriate than others. Your local ADU contractor should educate you on the Santa Clara ADU rules for the different types of ADUs and their benefits. 

Detached Accessory Dwelling Unit

Detached ADUs are standalone structures that are separated from the primary single-family house or multi-family structure. This is one of the most popular ways to build your ADU Santa Clara County, because it provides the guest with complete privacy. 

Attached ADU

As the name implies, attached ADUs are an addition to your single-family house, sharing a wall with the primary home. Your ADU Design Build Bay Area may require an attached ADU if there is already an attached unit or if you have limited backyard space. 

ADU Garage Conversion

ADU Garage conversions are built by transforming your garage or pre-existing structure into a living space. An ADU contractor in Santa Clara should encourage this type of ADU construction, if possible, because it is cost and time efficient. This is because there is no need to build an entirely new external structure. 

Finding the Right ADU Contractor Near You

Let’s face it- finding the best contractor to build ADU units is neither an easy nor an inexpensive decision. Wise Builders encourage customers to do their due diligence before committing to any project, which is why providing information and being transparent about the cost and time taken is pivotal.  

How Much Does it Cost to Build an ADU?

Typically, your ADU construction will start at 100,000. However, the exact costs will vary depending on the type of ADU you want to build, the size, the materials you choose, and the home builder you hire.  

However, an ADU Builder should believe in ‘Wise’ Construction, and this is best accomplished by advising customers on best practices to reduce costs without compromising quality and vision.

City of Santa Clara ADU Requirements

A City of Santa Clara Accessory Dwelling unit has certain requirements that need to be fulfilled before the project can be started. Some requirements include size, number of ADUs, maximum height, parking spaces, and minimum distance requirements for fire safety. 

If somebody wants to improve the state of the bathroom in their ADU, for example, they need to find the best service for Bathroom Home Improvement in Santa Clara, California. Making the ADU habitable is one of the key requirements of an ADU.

Process of Building an ADU Unit in Santa Clara, California

Even though it may sound very appealing, it is not always an easy or quick process to build an ADU. Your Santa Clara ADU builder should let you know everything you need to start the project. Nonetheless, some of the basic queries have been answered below.

Do you Need a Permit for an Accessory Dwelling Unit in Santa Clara?

An ADU in Santa Clara County needs an application submission from the willing party, followed by an inspection. Generally, your contractor must follow all the Santa Clara ADU regulations, but it is always better to be educated on the laws yourself. 

County of Santa Clara ADU Ordinance

ADU ordinance in Santa Clara contains a lot of information regarding Architectural Value, Flood Area Ratio, Dwelling Purpose, and much more. It is important to go through it before talking to an ADU Contractor or Home Remodeler.

ADU Contractor in San Jose, CA has to follow similar regulations and ADU ordinances. 

How Long Does it Take to Build an ADU in Santa Clara?

ADU building typically takes a year to complete. However, this can vary depending on the type of ADU. An ADU Builder in Santa Clara should provide their clients with the rate and project timeline. Timelines will vary from contractor to contractor so it is important to review this in advance. One thing is for sure – Santa Clara County ADU requirements must be followed no matter how long the project takes. 

What You Should know about the City of Santa Clara

Now that you have a little information about building an ADU in Santa Clara, it makes sense for you to know about the land you are building it on. The housing market in Santa Clara is competitive, with the average sale price for homes being around 2M. This makes it a prime area for ADU housing

Is the city of Santa Clara in Santa Clara County?

Santa Clara is a city within Santa Clara County. It is the home of many large tech companies – one of the reasons why people are attracted to this city. New House Construction in Santa Clara, California is an extremely profitable opportunity for the people of Santa Clara. 

Building an ADU in Santa Clara County is an excellent investment opportunity. Besides contributing to the affordable housing market within the county, it is also a great way to earn passive income. Wise Builders will help you with your ADU construction by providing top-of-the-line services in a cost-effective and time-efficient manner!

Frequently Asked Questions (FAQs)

What is the Santa Clara ADU Property tax?

Building owners should expect additional property tax when building an ADU home. This is because ADUs add value to your property. However, it increases only by a marginal amount, because the entire home is not being re-evaluated. ADUs are treated like home additions, so they are independently assessed. 

Does Santa Clara County require an ADU Permit?

Santa Clara County must approve the construction of ADU units through the issuance of building permits on any single or multi-family residence. Typically, states will require at least one electrical permit and location permit, but it could be more depending on the property. 

Can you build an ADU before the main house in California?

No, you cannot build an ADU before the main house. Only people with a family home are permitted to construct an Accessory Dwelling Unit. Although, the ADU cannot be sold separately, as it is still legally attached to the primary residence. 

How many bedrooms can an ADU have?

An ADU can contain more than one bedroom, but the size limit is between 800 to 1000 square feet for the entire Additional Dwelling Unit, so the bedrooms should be accommodated based on this. ADU contractors are responsible for creating blueprints that will properly fit your property. 

Can a duplex have an ADU?

Yes! ADUs can be added to multi-tenant buildings, including duplexes, triplexes, residential buildings, and huge housing residences. In most instances, your home builder will be able to construct two ADUs on your multifamily property.

Our Services & Locations