If you live in an area with a high demand for housing, constructing a walkout basement from the existing home may be one of the best ways to create additional living space and increase your home’s value. This involves extending your house’s foundation down to below-ground level, as well as digging out “rooms” that provide access to the outdoors.
In this blog post, we will look at steps on how to build a walkout basement from existing home and to build a successful walkout basement from scratch. We’ll discuss everything you need to know—from materials and tools needed, connecting utilities like electricity and plumbing, installing exterior walls for ventilation and temperature control, plus more! Get ready to add valuable square footage (and potential resale value) by creating an entirely new usable level of living space in your house.
What Is a Closed Basement?
A closed basement is a type of walkout basement that connects to the main living area of an existing home. It can provide additional space for bedrooms, storage, or even recreational activities such as a media room. The difference between closed and open basements is that the former does not have an exterior entrance and instead provides access through interior stairs or a door.
The process for building a closed basement is fairly straightforward. First, a contractor will need to excavate and pour the concrete foundation, which must be done in accordance with local building codes. Once the foundation walls are in place, they can be insulated with rigid foam panels or block insulation to keep out moisture and sound. The walls can also be sheeted and finished with drywall or other materials.
9 Methods How to Build a Walkout Basement from Existing Home
1. Hire a Professional
The first step in how to build a walkout basement from an existing home is to hire a professional. A professional will be able to help you determine if your home is suitable for a walkout basement and will also be able to provide you with the necessary permits. A professional can also help you understand the local building codes and will be able to provide you with detailed plans for your project. If you plan on doing the work yourself, be sure to hire a professional to help you through the process.
2. Excavate the Area
Once you have determined that your home is suitable for a walkout basement, the next step is to excavate the area. This can be done by hand or with the help of a machine, depending on the size of the area. The goal is to create a level area that is the same size as your planned walkout basement. Although excavating can be a difficult task, it is an important part of the process.
3. Install Drainage
After the excavation is complete, the next step is to install drainage. This is important in order to prevent water from seeping into your basement and causing damage. Drainage methods may include installing a French drain, using gravel and drainage pipes, or using a sump pump.
This can be done before or after the walls and floors are in place, depending on the type of drainage system you decide to use. Make sure that any water that collects is directed away from your house and towards an area that can handle the extra water, such as a storm drain.
4. Pour the Foundation
Once the drainage is installed, the next step is to pour the foundation. The foundation will need to be at least eight inches thick in order to support the weight of the walkout basement. It is important to use the right mix of materials in order to ensure the foundation is strong and able to support the weight. The type of concrete used will also need to be chosen carefully in order to ensure the foundation will be able to support the weight of the basement. Try to use a mix that is designed for foundations and has the right strength and durability.
5. Install Walls and Ceilings
After the foundation has been poured, the next step is to install walls and ceilings. This can be done with either wood or metal framing. The type of framing used will depend on the area and the space available. You’ll also need to decide if you want to insulate or use vapor barriers. Once the walls have been framed, they will need to be covered with drywall or other appropriate materials.
Additionally, you’ll need to install wiring and plumbing for outlets, lights, fans, and other components. This is generally easier to do before the drywall is installed, as it gives you better access to the wiring and plumbing. Once these components are installed, then the drywall can be hung in place.
6. Install Windows and Doors
After the walls and ceilings are installed, the next step is to install windows and doors. This will allow natural light into your basement and will also provide ventilation. Make sure to select windows and doors that are energy-efficient, such as double-paned glass.
You’ll also need to install framing and door frames in order to properly hang the windows and doors. You may also need to install window wells if you choose to have any underground windows. Finally, make sure to take steps to waterproof your windows and doors in order to prevent moisture from entering the basement.
7. Install Insulation
After the windows and doors are installed, the next step is to install insulation. This will help to keep your basement warm in winter and cool in summer. Choose a type of insulation that is suitable for basements, such as spray foam or rigid board insulation. Make sure to seal any air leaks around the windows and doors before installing the insulation.
The finished space will be much more comfortable if you properly insulate it. However, if budget is a concern, you may want to consider skipping or reducing the insulation in your basement.
8. Finish the Interior Walls
After insulation has been installed, the next step is to finish the interior walls. This can be done with drywall or paneling. Drywall is the most common and popular choice, as it provides a consistent look that can easily be painted or wallpapered.
The installation of drywall includes hanging the drywall sheets, taping and mudding the seams, and sanding to complete. Once the drywall is installed, the walls will then need to be primed and painted or wallpapered. Though labor-intensive, this is one of the most rewarding parts of building a walkout basement from an existing home because it adds so much character and individualization to the space.
9. Paint or Stain Interior Walls
After finishing the interior walls, you can then paint or stain them according to your preference. You may also want to add trim or molding around doors and windows for a more finished look. You can also install floorings such as carpet or tile. Be sure to check for any cracks in the walls and seal them with caulk before painting or staining.
Things to Consider When Building a Walkout Basement from Existing Home
1. Structural Integrity:
It is important to consider the structural integrity of a home before attempting to build a walkout basement. Adding additional space to a home can put a strain on existing support structures. Therefore, it is important to consult a professional engineer prior to any construction work in order to ensure the structural integrity of the home is not compromised.
2. Cost Considerations:
Building a walkout basement from an existing home is typically more expensive than starting from a blank slate. Homeowners need to consider the cost of excavating and pouring concrete for the foundation as well as additional labor costs associated with having to connect utilities and ductwork in tight spaces.
3. Timeframe:
When planning the construction of a walkout basement, it is essential to incorporate enough time into the project schedule for unexpected delays or complications that may arise during excavation or construction.
4. Safety:
Safety is of the utmost importance when it comes to construction work, regardless of whether or not the job is taking place in a residential area. Homeowners should make sure that proper safety measures are taken throughout the entire construction process and have an emergency plan in case of any accidents or injuries onsite.
Conclusion
Building a walkout basement from an existing home is possible with some creativity and hard work. It’s a great way to add value to your home while also increasing the amount of living space. Although it is a more challenging and expensive home improvement project, building a walkout basement from your existing home can add considerable value to your property.
With careful planning and execution, you can create an additional living space that your family will enjoy for years to come. Thanks for reading our blog post on how to build a walkout basement from existing home! We hope you found it helpful and informative.
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