Bump-Out Home Additions in San Mateo

Bump-Out Additions. Professional Service.


We offer free on-site consultations and estimates with our professional team.


We are a local home remodeling company licensed and insured in the Bay Area.


We have a team of experienced builders, designers, and architects.


During the remodeling process, a project manager will be available at all times.
bumpout addition san mateo

Bump-Out Home Additions in San Mateo

If you need additional space in your home or existing garage but have unique yard considerations or space limitations to work around, a bump-out addition could be the perfect choice. While bump-outs tend to be smaller than full-scale additions, they are a cost-effective way to provide a decent amount of extra square footage. From walk-in closets, to a bathtub, to window seating, there are many creative options to upgrade your home and accommodate your needs.  


Our amazing Design-Build team in San Mateo will work with you, your municipality, and each other to ensure your project meets local regulations, the necessary permits are pulled, and you are 100% satisfied. We’ve got you covered from design concept to construction.


Continue reading to learn more about the benefits, options, and costs of bump-out home additions. 

The Benefits of Creating a Bump-Out Addition

There are many benefits to a bump-out addition. For starters, they typically cost less than a full addition. We can build just enough space for what you need, no more, no less. What also makes choosing a bump-out attractive is that we can build them to seamlessly blend into an existing structure so they appear to be original. 


If your yard has mature trees, we can likely work around them to offer you more living or storage space without disturbing your tree canopy. We will assess your yard and home then offer our professional opinion on what type of addition would work well. 


And last, with a bump-out addition you get the benefit of extra square footage without losing valuable yard space.

Lovely breakfast nook with white round table and blue chairs.

Bump-Out Addition Options

Bump-out additions are a unique way to expand the use of your home or existing garage.


You can update your kitchen by adding a bump-out of 2-3 extra feet. This may not sound significant, but if your kitchen is 15 feet wide, this smaller addition can provide an extra 30-45 square feet. You could create a beautiful kitchen island, expand your cooking space, or add a walk-in pantry. This same idea could be implemented in a bedroom or bathroom.


In a bedroom, a bump-out could provide enough room to add a cozy seating area or an expanded walk-in closet. In a bathroom, bump-out additions can provide more storage, additional counterspace and an extra sink, or even a free-standing tub. 


And don’t forget the garage! Here, a bump-out addition can give you the space to add a workshop or more square footage for storage which can free up space inside of your home. 


Cost to Build a Bump-Out Addition

Depending on where and how much square footage you want to add, the cost of a bump-out can vary, but it is a great alternative to a full-scale addition. For instance, if your bump-out is more involved, requiring significant foundation, plumbing, and electrical work, this would cost more than adding a smaller bump-out to a garage that is used only for storage.

Our design team will walk you through the best solution for your home, do a cost-benefit analysis, and come up with a concept that matches your style and needs.

Whatever you decide, Spaces Home Remodeling looks forward to building a creative space that you can be proud of.

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What You Need To Know Before Meeting With Us Or Any Other Contractor

Validating the following information before meeting with a bump-out additions contractor can save you a lot of time and narrow your search:

  1. Visit the contractor’s website check for their license number.
  2. Check they have the right license class (General B12) and that the license is active. 
  3. Check that contractor is bonded
  4. Check that they have an active workers compensation insurance. 

Once you have the contractor’s license number all you need to do is to visit the CSLB (Contractors License Board) and perform a license search. All the information above will be available under the contractors license page.

Click here to check our contractor license information 

What is included in our bump-out estimates?

Our bid includes a detailed description of the scope of work that is involved in your bump-out project.

The total cost stated in the bid is for design services, architectural plans (if required and agreed upon), in addition to labor and rough materials. 
Finish materials are not included in the bid as we want to give our customers the freedom to control costs and choose the type and style of the materials to their liking.

How long does a bump-out addition take to build?

The construction work involved in a bump-out addition can take anywhere from 1-3 weeks depending on the scope of work involved.
If a permit was obtained as part of the project, scheduling inspections with a city/county inspector throughout the project, will be required.

The city/county inspection schedule availability can affect the overall timeline.

Does a bump-out addition require a permit?

If the scope of work involved in your project includes one or more of the following, obtaining a permit will be required: 

* Electrical work
* Plumbing work (if needed)
* Changes to the layout of any existing garage.

City/County permit fees will range between $800-$1700. The city/county determines the fees according to the size and cost of the project.

You do not need to worry about obtaining permits, submitting plans, scheduling inspections or filling in any type of paperwork required by the city or county, as it is part of our service and will be taken care of by our office team.

How soon can we start working on your project?

Our bump-out build team can usually start the construction work 1-2 weeks from the day the work contract is signed.
In case a permit is required, work will begin 1-2 weeks from the day the permit is obtained and approved by the city/county  

What permits will I need for a bump-out addition in San Mateo?

This depends on the type of addition, but in general you will require a building permit (structural BLD), HVAC and plumbing permits. However if you are in a semi-detached then you will require signoff from the neighbor in the form of a party wall agreement.

Can I live at the property during the remodeling work?

Yes. Staying at home during a bump-out addition is very common and most of our customers do so. In addition, we do everything possible to make you and your family feel comfortable during the process.

How do we communicate with our customers during the bump-out addition process?

During the renovation process your project manager, the home remodeling team, and builders who are involved in the remodel, will be 100% available to you.

After signing the work contract, your project manager will open a group messaging system which includes you, our office and any team members related to your project. You can use this platform to ask questions and request updates. In addition, your project manager will visit the property on a daily basis. 

Our home remodeling team will arrive at the property every morning Monday- Friday (if that fits your schedule), in order to meet the project deadline.

Our main goal is for you to be happy with our work and your new home.

Can you also create the design for the bump-out addition?

Yes. We are a full service Design-Build contractor, meaning we take you from concept to completion including architectural design, interior design, structural engineering, building permit acquisition, and of course construction.

Will a bump-out addition add value to my home?

The ROI for additions is quite high when compared to most other renovations because you are adding actual square footage to the home. Depending on the type of addition you build, some actually create an ROI higher than the investment itself. Design plays a big factor in this and should never be overlooked! 

How Can We Help You With Your Bump-Out Project

At Spaces Home Remodeling, we will walk you through the entire addition experience until you are satisfied. Located in San Mateo, CA, our renovation team will design and customize your bump-out addition according to your style. We can work with a range of designs and materials to create the space you want.

Whether you are looking to create a small bump-out or a move involved one, Spaces Home Remodeling can make it happen. We pride ourselves on developing excellent relationships with our clients. Our communication channels are always available and we involve our clients every step of the way in the addition process.

The Process Of Our Bump-Out Additions

Our renovation process involves several stages. During the Design Phase, our talented designers will work together with you to put your renovating ideas on paper. They will offer expert advice  and discuss the options available for your bump-out addition.  This is followed by the planning phase when our architects create a comprehensive plan and schedule of work to ensure that your daily routine remains uninterrupted. We will ensure that our bump-out project activities are done efficiently and effectively with the minimum of disruption to your everyday lives.  

 We promise each of our clients to provide excellent workmanship on every project we undertake.

Spaces Home Remodeling

(650) 409-9574
1900 S Norfolk St. Suite 395, San Mateo, CA 94403
License Number: License #1044595
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