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

General Contractor for Home Expansions in Los Altos, 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 Altos.

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 Altos 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.


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 in Los Altos!

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 full-service construction company in Los Altos, California!

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.

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 Los Altos 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.


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 in Los Altos.

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 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!

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Ready to move forward?

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

Your home is your kingdom. It’s where you make memories, build your life, and spend time with the ones you love. But sometimes, families outgrow their homes. Whether it’s because your family is growing or because you need more room to pursue professional pursuits and hobbies- a room addition project can be a good idea. A room addition in Los Altos is an amazing way to create the space you need in the place you love while also increasing the value of your property. 

When searching for contractors for home additions Los Altos, it’s crucial to find a professional who’s dedicated to bringing your dream to life. Contractors need to dedicate themselves not only to quality construction and craftsmanship but also to create a space that serves your needs. 


Wise Builder understands that no two home additions are alike – each client has their own unique needs and preferences. If you’re looking for the best room addition contractors Los Altos, CA you found them! The professional team at Wise Builders understands how to combine function and design, bringing you a space you’ll love! 

How to build an additional room to your house in Los Altos

When it comes to building home additions Los Altos, you’ll need to make a plan. After all, a quality home addition doesn’t happen overnight! The first step is to do your research. Look for inspiration and do your due diligence to find the most reputable contractors to hire for the project. 

Determine your needs VS wants

When it comes time to build an additional room to your house, you first need to determine your needs VS wants. Do you need an extra bedroom for a growing family? A home office? A man cave? Or do you simply want more space to entertain guests? These are all questions you should ask yourself before creating any plans. 


Once you know what you want, it’s time to dive deeper and decide what you really need. Decide how big you need the space and what features you must have. These are things you must discuss with your contractor to ensure a smooth construction process. Once needs are determined, then your contractor will be able to make proper plans. These are also things to consider when hiring contractors for kitchen remodeling services in Los Altos, California

How to get a permit for a home addition

Once you know what you need, it’s time to start planning your additional room construction. The first step is getting a permit from the city. The Community Development Department can help you understand all the regulations and codes your room addition in Los Altos will need to follow. These codes are strict, but it’s important to make sure that you’re following all the necessary regulations. Contractors who perform home addition services Los Altos will be able to adhere to these guidelines. 


Then, you’ll submit your permit application to the city and wait for approval. After you have the go-ahead from the city, it’s time to start building with your chosen home addition construction company in Los Altos!


Permits are also needed for electrical and plumbing redesigns. This is important to remember if you’re getting your bathroom remodeled in Los Altos

Types of Room Additions

There are many different types of Los Altos room additions, and it’s important to pick the type that best fits your needs. Regardless of what room addition you construct, it will add value to your home. However, it is important to study the layout of your home in order to make proper plans for your room addition. 

Living room addition

If you’re looking for more living space, a living room addition Los Altos might be the way to go. This is one of the most popular types of room additions, as it can add a lot of space and value to your home. Wise builder can help you create a comfortable and functional living space. 

Laundry room addition

If your home doesn’t have a dedicated space for laundry or lacks a washer and dryer hookup altogether, a laundry room addition in Los Altos might be a wise remodeling decision. This is a great way to add functionality to your home and help you save time and money. It is one of the most popular forms of room addition services in Los Altos. 

How much does a house addition cost in Los Altos, CA?

On average, room additions cost somewhere between $86 and $208 per square foot. The final cost depends on a variety of factors, including time, complexity, materials used, and your home addition contractors in Los Altos. This makes creating a bigger space affordable, as it won’t cost nearly as much as a new home building in Los Altos

How long does it take to build a room addition?

You’re probably wondering, how long does it take to complete additions for homes in Los Altos, California? The answer is – it depends. The timeframe will heavily depend on the size and complexity of your space. It will also depend on the efficiency of your home addition contractors in Los Altos. You need to consider how long it takes for the permit to get approved and how long it might take to add the finishing touches once construction is complete. 


You can safely expect the entire process to take between 2-3 months when working with experienced room addition contractors Los Altos, CA. 

How do you finance a home addition Los Altos?

There are many different ways to finance a Los Altos home addition. The option that’s best for you will depend on the cost of your addition and your financial situation. Some people choose to pay with their savings or with credit. For larger additions, the most common form of payment is a personal or home equity loan. This is also the case for complete house remodels in Los Altos, California.

Do additions add value to a home?

Yes – room additions do add value to a home. Increasing the total square footage adds liveable space to the property, thus making it more valuable. Plus, functional rooms, like a living room made for entertainment or a laundry room will add value. Another popular way to add value to your home is through constructing accessory dwelling units in Los Altos, CA

Where to find a contractor for home addition near me?

You’re probably asking yourself – how can I find room additions contractors near me? The most important thing you can do when looking for a contractor is to choose reputable professionals you can trust. Experienced and honest contractors will complete a job with integrity, leaving you with a safe and quality space. Make the wise construction choice of doing your due diligence before choosing a contractor. 

Check your home additions contractors references and credentials

When searching for a home addition contractor near me – references and credentials will tell you a lot about the work the contractor has done in the past. First, make sure the contractor is licensed and insured. Then, look into reviews from past clients. The best room addition contractors will have sufficient experience and positive credentials. 

Do i need an architect for a home addition?

An architect can help you design the perfect addition for your home and can ensure that all the necessary permits are obtained. While it’s not required, an architect will make sure your space fits your needs and adheres to all regulations. 

Experienced and licensed home addition contractors Bay Area understand local regulations and will work to make your space functional and safe – therefore hiring an architect is definitely optional. 

What is the median price for Los Altos house for sale?

The housing market in Los Altos Hills is very competitive, with the median sale price hovering around $4 million. However, home prices have been down 4.8% compared to last year. They also typically stay on the market for 17 days, as compared to 9 days last year. 

Los Altos Building Inspection

After your home addition is complete, you’ll need to get it inspected by the Los Altos Building Division. The inspector will check to see that your addition adheres to all codes and regulations and is safe for you to live in. Typically, inspectors will write down notes and use special equipment to detect things like moisture or poisonous materials. 

Building a room addition in Los Altos is an amazing way to transform the aesthetic of your home while adding space and value. Being educated and informed about the different types of room additions in addition to the various benefits is pivotal.

Frequently Asked Questions about Home Additions in Los Altos

How to design a house addition?

Designing a house addition happens over a series of steps. First, you must decide on your wants and needs. Then, you should look for inspiration so you can clearly show your contractor the look and feel you’re going for. You can also consult with an architect or designer who can help create the blueprints for your addition.

How to build a foundation for a house addition?

The three steps to building a foundation for a house addition is erecting wooden forms, installing bars between the form faces, and then filling the forms with concrete. If your existing foundation doesn’t support the additional weight of the new structure, then you’ll need to build a new foundation. Qualified and skilled room addition contractors can build the right foundation to support your expanded space.

How to build an addition to your mobile home?

There are a number of additions you can make to your mobile home, like a bedroom, living room, or even a porch. A contractor can help you explore your options and discover additions that meet your needs. However, in general, a mobile home addition must be able to move independently of the home. It has to attach to the mobile hope but also be able to move freely from the home itself. 

How much does a 12×12 room addition cost?

The median cost for a 12×12 room addition is $17,300. The exact cost will depend on a number of factors including complexity, materials, and the cost of labor for your home addition contractor. Typically, the cost will be around $80 – $200 per square foot. 

Can I get a construction loan for home addition?

Typically, people will not get a construction loan to finance home renovations such as room additions. However, there are a variety of different loans available to pay for home additions. Home equity loans and personal loans for construction are two of the most popular ways to finance room additions.

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