San Jose, CA  >

Room Addition and home expansion services with before and after transformations
Home Addition Contractors and home expansion transformations

Certified Room Addition Contractors in Saratoga, 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 Saratoga home addition 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 entirety of your property. 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 concepts for your project.

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 your entire home addition project. This phase will include an estimate of pricing for the project, the anticipated process, and the expected timeline for the completion of your home addition project in Saratoga.

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 finishes of your home expansion project. Our showroom in San Jose will feature beautifully designed cabinetry, a variety of exquisite tiles and flooring, and many more materials to help you finalize your project.

Finalize Gameplan

As you decide on your finishes, we will provide you with the final drawings, layout, design, and 3D renderings so that you can truly see how the newly added rooms to your house 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 Saratoga.


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 expanding your home!

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 construction phase. Your project manager will handle this process from A to Z since we are a Saratoga full-service construction company!

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 and finishes needed for your room addition project from our most trusted vendors. These selections will give that final touch to your beautifully designed new home.


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 home expansion project in Saratoga.

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 home addition project timeline and prepare us for the next phase.

Preparation & Framing

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, drywall, plumbing, and other aspects needed to move on to the installation phase of your home addition project in Saratoga.


It’s finally here! The installation process is where your home expansion project begins to take shape and finally come 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 phase, 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 final phase of your home addition project.

Final Inspection

While it is hard to say goodbye, we know how excited you will be to finally enjoy your newly expanded and more functional home! So this final walk-through with your project manager will be the final inspection needed to bring your Saratoga home addition project to completion.

5-Star Review!

If your project manager made your dream home a reality, 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.

If you are out of space in your current residence, you can move to a new home, build a new home, or consider building a room addition. Home addition Saratoga will be the best way to fulfill your needs in a cost and time efficient manner. 

A room addition to your home will expand your livable square footage and increase your property’s value. However, planning a room addition is not easy, so working with reputable and trustworthy room addition contractors in Saratoga is important.

There are many aspects to factor in when considering room additions in Saratoga. You have to be aware of the financing options, potential added value, and different types of room additions. Furthermore, you have to ensure your contractor is skilled and experienced, like Wise Builder! 

Steps To Building an Addition to a House in Saratoga

If you want to add a room to your house in Saratoga, you will have to consider your personal choices, your budget, and government regulations. The most important thing is planning ahead – that way you can achieve your desired outcome. Some other things to consider when adding rooms to existing house are setting goals and collecting the correct permits. 

Establish Your Wants vs Needs

Although this new venture of adding on a room to a house can be exciting, you need to keep your wants and needs in mind. Consider what you want to achieve with your new space. How much square footage do you want to add? What kind of room do you want? Do you want to build out or build up? Will you be okay with your yard shrinking? These are all important aspects to consider when constructing housing additions in the Bay Area

Room additions can be time consuming and draining. Therefore, prioritizing what you need vs what you want will save you a lot of headache down the line. This is something you should discuss with your Saratoga home addition contractor. Additionally, you want to set a budget and project timeline. That way your house addition in Saratoga project can go as smoothly as possible. 

Permit for Room Addition

Before starting your home addition Saratoga project, you need to obtain permission from the local authorities. For this, you need to first submit your construction plans so it can be approved. You must ensure you obtain all the necessary approvals and permits. However, if you are hiring a home addition contractor in Saratoga, CA, you don’t have to worry about anything, as they will take care of the details.

This is also the case for bathroom contractors in Saratoga, CA – who will typically only need to collect permits if you plan to change the structural layout or electrical of your bathroom


How Much To Build an Addition to a House in Saratoga, CA?

When considering Saratoga room additions, you need to consider the cost of the entire project. The cost of a room addition typically ranges from $21,000 to $74,000. You will have to determine your budget depending on the materials and equipment required. Or you can hire room addition contractors in Saratoga and ask them to submit a plan according to your budget.

How Long Does It Take To Add a Room Addition?

Typically, room additions take around 12 and 18 weeks.The time it will take to complete your Saratoga room additions project will depend on the extent of your project, including demolition, prep work, rough mechanical work, and insulation.

Types of Home Additions

There are many different types of additions for homes in Saratoga that one can construct. It can take the form of a bathroom addition, home office addition, kitchen addition, and mother-in-law suite addition. However, the most common room additions in Saratoga are family room additions, sunroom additions, and master suite additions. 

Family Room Additions

A family room is one of the most common house additions in Saratoga, California. It is a large room where the entire family can gather and spend time together. It can be used for games and entertainment and is a space that grows with the family.

What Is A Sunroom?

Another common type of addition to homes in Saratoga, CA, is a sunroom. A sunroom is a room that gives a great view of the landscape and allows abundant daylight. It is an excellent way to add a modern aesthetic to any home.

Finding Home Addition Contractors Near Me

The best way to find a good home addition contractor in Saratoga, CA, is by word of mouth. Ask your friends and relatives who have had room additions and had a good experience.

You can also run a Google search for home addition contractors near me and filter through the reviews. It is pivotal that your contractor has past experience with the type of construction project you want. 

Is Your Room Addition Contractor Licensed?

The first step when searching for room addition contractors near me is checking for a license. You can ensure the license is valid by searching up the license number with your local city authority to see if it’s registered. Additionally, you should ensure your contractor has insurance – these are all wise remodeling decisions to make when searching for a general contractor. 

Ensuring your general contractor is licensed and insured is a must for every renovation project especially when hiring a contractor to build new construction homes in Saratoga, CA.

Do You Need a Designer for Home Addition?

When considering additions for homes in Saratoga, you’ll need to decide if you want a designer to help you. Although it is not necessary, a qualified designer will definitely help you make the most out of your space and can recommend the best materials and appliances for your vision. This is also something to consider when hiring home renovation contractors in Saratoga.

How to Finance an Addition to Your Home in Saratoga?

When considering a room addition Saratoga, there are many ways you can finance your project. Some of them are:

  • Home equity loans
  • Home-equity lines of credit
  • A Cash-Out refinance
  • A personal loan or home improvement loan


These are also the available financing options you should consider when hiring a kitchen remodeling company in Saratoga

What Additions Add Value to a Home?

Adding rooms to your home not only adds comfort and space but also improves its value. In most cases, an extra room can add anywhere between $30,000 to $50,000 in potential resale value, depending on factors such as the current residence value and location. 

Such additions include:

  • Adding bathroom
  • Adding a deck
  • Adding a sunroom
  • Adding a family room

You may consult Saratoga room addition contractors to get their opinion on the kind of addition that will add value to your space. Another popular renovation project that adds value and much needed space is building an additional dwelling unit in Saratoga

What To Do in Saratoga, CA

Saratoga is a beautiful city in Santa Clara county. It is located in the famous Silicon Valley, which is known for being the headquarters of the largest technology companies in the world. There are many things to do in Saratoga including visiting wineries and attractions like the Villa Montalvo or Hakone Gardens. 

Average House Price in Saratoga, CA

The average price of a home in Saratoga is $3.75M – which is 4.9% higher than last year. Typically, a home will sell after 15 days. However, it is not necessarily the best time to sell your home as mortgage rates are at all time highs – therefore make the wise construction decision and remodel the home you already own! 

Room addition construction is one of the most popular and efficient options to add much needed space to your home. Additionally, it can add value and boost your resale value significantly. Reach out to Wise Builder today to get a free quote!

Frequently Asked Questions on Saratoga Room Additions

Are there zoning restrictions to consider when building a room addition?

Yes, most cities do have rules about where you are allowed to build. Although the laws vary depending on your location, you are typically not allowed to build anything within 20 feet of your property. Additionally, there are limits on how tall your home can be – which is why you may have to build out rather than build up when constructing an extra room. 

Do I need a house addition architect?

No, for most remodels, an architect is not required. However, an architect will be able to help you with the proper design and structuring of your addition. They will provide you with designs that will fulfill your needs and offer maximum strength.

Can you add a modular addition to an existing home?

Yes, typically you can, but you should definitely double check with your local contractor. Modular additions are prefabricated additions that contractors build off-site. They attach to the side of the home or can also be installed as a second story. They can be setup as little as three days. 

Does a non-permitted addition add value to a home?

No it does not. In fact, it can do the opposite. The appraisal of your property could be less than your asking price. Hence, buyers will not be able to secure financing and can expect a discount on the price.

How much does a house addition cost per square foot?

House additions can cost anywhere between $80 and $200 per square foot. The cheapest way to add livable square footage is by building up rather than out. This is because it requires less material and labor.

Our Services & Locations