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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 San Jose

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.

Scope of Work

If all goes well during the in-home appointment in San Jose, 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.

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.


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 in San Jose!

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.


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 completion of your new ADU home.

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 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.

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.

Building an ADU in San Jose is an excellent way to expand your living space, venture into renting the ADU out, or even increase storage capacity.

Ultimately, you decide the best fit for you, which you can seamlessly achieve with the help of San Jose ADU builders.

The only challenge you may encounter is finding the right contractor to build an ADU unit in San Jose. There are many different contractors in the area, but which should you choose to work with? Worry less, because we at Wise Builders will help you achieve your ADU construction San Jose project.

How to Plan for ADU Building in San Jose?

When you decide to proceed with your ADU building, you want to start with an excellent plan. Taking time to figure out exactly how to go about the ADU in San Jose will save you from incurring extra costs on oversight and give you much-needed peace of mind.

The primary elements to consider when planning for an ADU building include:

  • Setting the budget.
  • Finding a competent team of San Jose ADU builders.
  • Designing and determining how to obtain paperwork on time.

How Much Does an ADU Cost?

The price varies greatly, depending on the size of the ADU unit in San Jose and its design. Therefore, determining a fixed figure immediately requires consulting with one of our project managers.

Our main priority at Wise Builders is our clients’ happiness, making us the most sought-after ADU contractor in the San Francisco Bay Area.

We provide you with a quote after reviewing what designs you have in mind for your future ADU home. The building area, material, design, standards, and various other factors may influence the cost of ADU houses.

At Wise Builders, we also incorporate permit fees in the cost to build ADU San Jose. As a house owner, you deserve the peace-of-mind, and we make constructing an ADU in San Jose look easy because we’ve been doing it for many years.

How Long to Build an ADU?

Similarly, the time general contractors spend building your San Jose ADU varies depending on the size of your project and whether you intend to start from scratch or convert your garage.

We believe in providing your clients with a schedule and sticking to it as much as possible. Whether we’re constructing ADUs or designing a kitchen renovation in San Jose, CA, we provide you with a timeline of when the project will be completed and update you on your ADU’s status.

ADU San Jose Checklist

Like any major financial decision, making a checklist is very helpful. This is especially true when trying to predict the ADU cost San Jose. Once you have a budget, you can start considering design ideas.

As the top ADU contractors in San Jose, we will help in suggesting design ideas and types of building materials to help stay within your budget. Make sure your checklist includes budget, design ideas, wants, needs, and, most importantly, questions. Our project managers are experienced ADU builders San Jose, so they have encountered all kinds of questions from clients.

Steps for Building ADU Housing in the San Jose Area

Every construction project requires a systematic plan to complete. As an experienced local contractor in San Jose, we’re prepared to guide you, especially if you haven’t undertaken a construction project by yourself before. Our input will help you take primary steps towards deciding on the specific ADU design build.

We have an online portfolio of previously constructed ADUs in the Bay Area for design ideas. Visual ideas are a great way to become inspired when creating an ADU. You should also check out some of our other projects, such as beautiful house additions in San Jose, CA.

Our different San Jose ADU design ideas range from different styles, from a modern look to a rustic design.

Afterward, you can wait for us to prepare blueprints as your project’s primary structural and architectural guide. When you obtain all the required paperwork, we can proceed to apply for construction permits and work on building the additional dwelling unit.

Can You Finance an ADU?

Absolutely! Financing your ADU or garage conversion San Jose is an intelligent consideration that may save you from an otherwise financially stressful situation.

You can look into different financing options, including a Home Equity Loan and Line of Credit (HELOC). This is a common option for anyone looking to construct an ADU in San Jose, as it allows you to secure the equity percentage of your home that you already own to obtain funding.

Most of our clients also funded their ADU construction San Jose, CA project by refinancing their mortgage on their primary home. Most banks are willing to assist and provide you with a loan, but financing an ADU project is critical and should be taken care of first.

How Much Does an ADU Increase Property Value?

Home valuation reports indicate that building an ADU can increase your home value by up to 30% or more of the initial value. Whether you have a San Jose garage conversion or an entire ADU built, your property value is very likely to increase.

In general, its value will most likely increase when you add square footage to a property. This is true when building an ADU or even constructing a bathroom renovation in San Jose, California.

Although the findings are positive, they also vary greatly depending on factors like your home location. These types of questions are commonly seen on an ADU checklist San Jose. Naturally, different locations attract varying price ranges depending on the amenities, proximity to work areas, and overall land valuation.

Consulting with an experienced home builder or a realtor is one way to determine whether your project is a valuable investment and, if so, the exact value you can extract.

How to Build an ADU?

Building an ADU requires you to liaise with a professional ADU builder in San Jose instead of doing it alone. Our experience and expertise are crucial in the construction phase because we apply technical knowledge to put up a structurally sound ADU.

Building an ADU property from the ground up begins with laying a foundation. This stage is critical, as the foundation supports the entire building and ensures it remains sturdy despite external conditions.

Next, we will fix any underground structures and features necessary for a functional building. These include the ADU partitions, piping, and sewage spaces, as well as the general ADU design expected once the structure goes up.

We will then raise the ADU structure using your material of choice. The two main options used by most construction companies are wood or concrete. Regardless of your choice, you can trust your San Jose ADU builders to deliver an excellent ADU structure for your use.

Additionally, we cover the framing and installation of electrical and plumbing features to ensure that your ADU construction San Jose is habitable. You can provide personal touches that you would like included in the project, as you may have preferences for your fixtures.

To conclude, the roofing and finishing touches follow. Your input is highly valuable to us at this stage, as the ADU finishes bringing out your taste and style. Thus, take maximum advantage of the interactions available to ensure your opinions are considered.

Notably, garage conversions will be different from typical ADU construction San Jose. In conversion projects, we demolish any unwanted material and improve the current foundation to complete a City of San Jose garage conversion.

Types of ADU Units in San Jose, CA

Every client is also at liberty to choose their preferred ADU unit, and you have several choices for your selection. As an expert ADU builder San Jose, we evaluate your property space to help determine which kind of ADU fits you best.

You may have seen the different ADU buildings on our portfolio, but here’s a breakdown of each kind of ADU we can build for you.

Detached ADU Unit

A detached accessory dwelling unit is among the most common; you will find them built alongside or behind the main house. Usually, a detached unit works best as an extra space to host guests or to rent out for an additional source of income. You may also consider using the unit as extra storage space, particularly if you run a business from home.

These types of ADU homes are smaller and do not take as long to construct as a brand new home. As the top custom home builders in San Jose, California, we know what it takes to build a new living space.

Attached ADU Home

Alternatively, you may opt for an attached ADU home based on the ease of building it up. This option is excellent for you if you prefer to convert your upper floor and create an attic.

Further, you can explore your creative options and have the basement redone to transform it into a fully functional ADU. Our team has decades of experience building attached accessory dwelling units.

ADU Garage Conversion

Garages often remain unused, yet they provide expansive home space. Therefore, you can transform your garage by remodeling the walls and making new installations as you see fit through ADU garage conversions. By doing so, you will have maximized the otherwise overlooked space to your benefit.

A garage conversion ADU project is one of the most requested services. At Wise Builders, we work with expert subcontractors to help convert your garage into a cozy house. We take care of any required San Jose garage conversion permit before any construction can begin.

How to Hire ADU Contractor in the City of San Jose?

Choosing a great ADU contractor San Jose directly impacts the project outcome, so you want to take your time and ensure they meet all the crucial requirements. Luckily, we meet all the requirements and have plenty of reviews from satisfied clients. Happy customers are more likely to recommend our services to others, such as a complete home renovation in San Jose.

What to Look for in an ADU Building Company?

Among the best qualities that indicate reliable and experienced ADU companies in San Jose is their wealth of experience in similar projects. You can request us to provide our completed projects portfolio containing our previous work for your reference.

Additionally, you can check out the various reviews available on your ADU unit in San Jose team to ensure that their work is at par with the required ADU standard. Customer satisfaction also speaks to more than just the ADU construction and includes how the team works with their clients and the delivery rate on promises.

This also touches on how responsive the ADU builder is to your needs, especially when you raise concerns or request a review of the plans in question. Moreover, you may need to inspect licenses, insurance, and certifications to ensure that the team you entrust to undertake your project is up to the task.

ADU Builders Near Me

When you decide to take on an ADU home project, you want it to turn out perfect the first time. Finding a skilled and reliable team will be highly advantageous for you, as you will avoid setbacks. With Wise Builders, you can expect the best ADU construction services in San Jose. Our team comprises professionals with over 25 years of experience and was awarded as Santa Clara’s Best General Contractor in 2020.

About the San Jose, California Area

Anchoring your life in San Jose by building your ADU unit opens up a world of opportunities, fun, and better living. If you are new in town, you might want to know what is in store for you. Or, if you have lived all your life in San Jose, you might want to take a break from your dwelling unit project and explore what this city has to offer.

Fun Activities in San Jose

Make sure to visit the incredible San Jose Rose Garden, where you can unwind and enjoy the warm, breezy weather. If you enjoy art, you can also try the San Jose Museum of art or switch things up at the Casino M8trix with a little bit of slot machine fun.

For family fun, Monopoly in the Park grants visitors the chance to play their favorite game with a giant Monopoly board painted on the asphalt. The world of possibilities is endless, and you will love it here! Don’t let yourself become stressed with San Jose ADU regulations; instead, explore the great city.

San Jose ADU Frequently Asked Questions


Can I Build an ADU on My Property in San Jose?

You can build an ADU on your property. Our project managers are ready to meet with you and explore which type of ADU benefits your available property space.

Which Type of ADU Is Best for My Home in San Jose?

Your current property space can determine which ADU is best for you and your family. An ADU garage conversion is most suitable if you have a garage.

How to Get an ADU Permit For San Jose, CA?

Our project managers are familiar with the different permit and zoning regulations regarding ADU construction. We take care of all that for you before any construction is started.

Is Building an ADU Unit Tax Deductible?

If you plan to place your property for sale within the same year you constructed an ADU, then it may be tax deductible.

Does a Garage Conversion Add Value to a House?

An ADU garage conversion will make your existing property more charming and add plenty of value to your house.

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