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

Qualified Home Addition Construction Company in Los Gatos, 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 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 in Los Gatos.

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 Los Gatos home addition project.

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 Los Gatos.


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 Los Gatos 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 Los Gatos.

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 Los Gatos.


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 Los Gatos 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.

Some people find their dream homes and some people make their dream homes. One way to transform your home into the house you’ve always dreamed of is through house additions Los Gatos. House additions allow homeowners to personalize their space while adding much needed space. 

Professional contractors should complete Los Gatos room additions in two to four months. Finding time in your schedule to supervise the project is a key factor. If you plan your renovation project right, your extra bedroom, living room, or home office will be ready in no time!

The most important step in the process is picking reputable and skilled home addition contractors Los Gatos. Keep reading for a quick, easy, and comprehensive guide to walk you through the room addition process.

How to add an addition to your house in Los Gatos?

If your bedroom, dining room, or family room has been feeling cramped lately, then it may be time to consider hiring room addition contractors in Los Gatos. Determining your needs and setting your goals for your room addition is the first step. You should consult with a professional contractor for room additions to see how you can properly add to your existing layout.

How to get a permit for a house addition?

Whenever a residential building is altered in California, the homeowner or general contractor needs to file permits to get the renovation approved. This applies for any house additions in the San Francisco Bay Area. When you hire a room addition contractors in Los Gatos, the general contractor will take care of all business between your residential property and the city or local government.

All permits for house additions Los Gatos can be found at the Los Gatos Government website in the building division. Typically, permits will cost anywhere from $500 – $2000. 

Set a timeline and budget for your home expansion in Los Gatos

Setting a budget for house additions Los Gatos is important before beginning any construction. If you budget wisely, then it will remove a lot of the problems that may arise down the line. Your set budget will determine the materials, fixtures, and contractor you utilize. 

Next, create a timeline for your additions to home in Los Gatos.This way your contractor is clear on completion dates and the project doesn’t go overtime. Setting a budget and timeline before hiring a contractor is important for any renovation project especially when hiring a bathroom remodeler in Los Gatos. 

How much value does a room addition add?

When a homeowner wishes to construct a Los Gatos room addition, the value of the home increases between $200 and $400 per square foot. If the room addition is 10×10 sq ft, the value of the home increases by $20,000 to $40,000. Garage Conversions in Los Gatos, CA usually add about 20% to your home’s value.

If the home being renovated is old and outdated, the value of the room addition could be more. The exact value added will depend on the scope of the renovation, location of the home, and current market condition. 

How to finance home addition in Los Gatos

There are several ways to finance a house addition in Los Gatos, CA. If your credit is particularly good you can take out a personal line of credit. People also can take out equity in their home by refinancing their current mortgage – which is one of the most popular ways to finance renovations. 

If you’re planning on a complete home remodel in Los Gatos, California – then a cash out refinance line of credit may be your best option. 

What are the different types of home additions?

There are several types of house add ons one can construct. Different room additions include a sunroom, an extended bedroom, an extended master bedroom, an extended bathroom, a bump-out, a garage conversion or a partial second story.

Master bedroom addition

If your master bedroom feels cramped, you should consider adding a room extension. A typical Los Gatos room addition for a master bedroom can include a separate closet space or a sitting area. This will transform your bedroom into the safe space you’ve always dreamed of. 

What is a sunroom extension?

Sun room additions is a separate room surrounded by windows on all sides. It is supposed to be a room that opens up into the outdoor living area and the patio. Sun room addition in Los Gatos can be designed with windows on the ceiling to allow as much sunlight in the room as possible.

How long do home additions take?

Adding an addition on home in Los Gatos, CA will take 2 to 4 months long. This will depend on the efficiency of your contractor, which is why it is a wise construction decision to create a set project timeline. 

It is also highly recommended to set a timeline when planning a Kitchen Renovation in Los Gatos, California which usually takes 3 months.

How much is an addition on a house in Los Gatos, CA?

The average cost of a housing additions Los Gatos is about $71,000. The range for a home addition cost in Los Gatos can be as low as $15,000 and as high as $130,000. These numbers were estimated in 2022 and will always depend on the scope of your project. 

How to choose room addition contractors near me

Los Gatos home additions contractors often provide potential clients with free evaluations and estimates. Contractors will come into your home, describe the project, and they will quote you a price. When they come to your home, you can request their licensing number so you can look them up online.

Also, request to see their portfolio project so you can see their past work. If they’re on a website like Yelp, Google reviews, or Angie’s list, look at the reviews and see what other past customers have to say about them. 

How Much Do Home Addition Contractors Cost?

Typically, contractors will charge between $40,000 and $80,000 to build a room addition Los Gatos. Each contractor has their own price for the same project that will depend on numerous different factors. When you search for a home addition contractors near me – ensure they quote you at the beginning of the project so there are no price changes once the construction begins. 

Check if your room addition contractor has a license

Checking the status of a contractor license when hiring home additions builders near me is a must. All you need is their business name and full legal name and you can check their status online or by phone. This is especially important when hiring contractors for custom build homes in Los Gatos, CA.

Housing Market Los Gatos

In September 2022, Los Gatos home prices were down 4.3% compared to last year – selling for an average price of 2.1M. With the cost of borrowing at record highs, home additions contractors Los Gatos are busier than ever! People are turning to renovating their current home rather than buying new ones. 

Visit the Los Gatos Wineries

The Los Gatos Wineries are certainly a positive feature of the city of Los Gatos. It is one of the many activities adults can do in the city of Los Gatos. Los Gatos is also known for its beautiful hills, fun restaurants, and top notch schools. 

There are several types of room additions in Los Gatos, California one can construct. These include sunrooms, a converted garage, a separate closet space, a master bedroom extension, a bump out, and a family room or kitchen addition. A home addition or extension is not a simple project and it can take up to 4 months long to complete, which is why it is so important to hire skilled home addition contractors los Gatos.

Frequently Asked questions about Room additions in Los Gatos

Do you need an architect for home addition? 

No. According to California building laws, a homeowner does not require an architect to build a room addition. A homeowner will need an architect’s approval if their home addition creates or extends the third floor. However, if the home addition is on the first or second floor, the homeowner simply has to file a permit with the city government.  

Can I build my own home addition? 

Yes, technically a homeowner can build their own addition. As long as they get the correct permits, they are permitted to do so. However, it is not recommended as it can be a complicated process if you have no prior construction knowledge. Your room addition construction will go much more smoothly if you hire a professional contractor to handle plans, permit collection, and inspections.

How much would a 10×10 room addition cost? 

It costs between $9,000 and $16,000 to build a 10×10 room addition. This will depend on the materials you choose and the cost of labor. Although a 10×10 room addition is quite small, it can be used as a home office or spare bedroom. 

How to frame a house addition? 

The contractor will start with laying the concrete foundation, then they will place wooden or stone support for a subfloor. The walls must be measured and the studs must be placed into the wood. Then the headers, cripples, jack studs, and additional pieces can then be installed. Finally, a nail top plate has to be placed on top of the wood.

Are home additions tax deductible? 

No, home additions are not tax deductible. In general, renovations on personal residences are not tax deductible. However, if you construct energy efficient equipment, like solar panels, the homeowners can write off the solar panels and cost of labor to install.

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