Bump-Out Home Additions in San Francisco

Bump-Out Additions. Amazing Results.


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.

Bump-Out Home Additions in San Francisco

Bump-out additions are a unique, cost-effective option for upgrading your home or existing garage. If you have yard limitations to consider, bump-outs can be designed with that in mind while providing you with the extra indoor space you desire. 

Homeowners in the San Francisco area choose bump-outs for a variety of reasons: walk-in closets, kitchen nooks, bathtubs, sun porches, or window seats in a family room. Our Design-Build team will meet with you to go over your vision and determine the best solution for your space.

It is our goal to provide you with excellent service and workmanship. We handle everything from permits and paperwork with the local building agencies to design and construction of a space you will enjoy for years to come. Read below to learn if the bump-out addition is right for you.


The Benefits of Creating a Bump-Out Addition

The benefits of adding a bump-out are many. For starters, you can build just enough space for what you need. In addition, it is an attractive option and can be designed to flow seamlessly into an existing structure. Another, less discussed benefit, is that bump-outs can provide additional indoor square footage without taking away valuable outdoor space. And last, but not least, bump-out additions typically cost less than a full-scale addition.


Our team will take into consideration your landscaping and yard design and work around mature trees as not to disturb your tree canopy. As always, we will offer our professional advice on the type of bump-out that would be well-suited to accommodate your unique home and vision.

Gorgeous black breakfast nook

Bump-Out Addition Options

There are a variety of bump-out options and ideas to consider. If you are looking to add square footage to your kitchen, for instance, a 3–4-foot bump-out might be all you need. That may not sound like a lot, but if your kitchen is 12 feet wide, you would be adding 36-48 square feet. This extra space could be used for a kitchen island, additional counter or storage space, or pantry.


In a bedroom a bump-out addition would allow extra space for an office, comfortable sitting area, or a walk-in closet. In a bathroom, you could add a sink, tub, or extra counterspace. 


Bump-outs can also be added to an existing garage or to the back of your home to create a beautiful, covered porch area. At Spaces Home Remodeling, we look forward to bringing your vision to life.

Cost to Build a Bump-Out Addition

While bump-out additions tend to be less expensive than a full addition, the costs can vary depending on the complexity of the project. If we build a bump-out that involves considerable plumbing, electrical, and foundation work, this will be more expensive than an addition that is used simply for storage.

Our approach involves a cost-benefit analysis and concept design that matches your style and meets your needs. Bump-out additions are creative options and Spaces Home Remodeling takes pride in building additions that our homeowners are proud of and get to enjoy for years to come.


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 Francisco?

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 Francisco, 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

954 Taraval St. #108, San Francisco, CA 94116
License Number: License #1044595
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