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  • Darren Tuitt

Types of Home Additions

Lateral Extension

Photo by RenoAssistance:

Lateral extensions are home additions that extend the house sideways with a bump out addition or a full addition. Most two-story homes would work for a lateral extension. You can do a lateral extension to add a garage or an additional room. This could be a room on top of the garage, a bedroom, bathroom, kitchen, entertainment rooms, sunroom, and much more.

Full Addition

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A full addition is a smaller house attached to the main house. They have several rooms, but typically don’t have a kitchen. The full addition typically includes guest rooms, garages, bathrooms, and in-law suites. This type of addition involves plumbing, electrical, and HVAC installation so there will be extensive construction.

Bump Out Addition

Photo by Glickman Design:

Bump out additions are micro additions that allow you to add square footage to your home. You can increase by twelve feet in width and three feet away from the home. However, the size of your addition will depend on how much land you have to use. With a bump out addition, you can increase the size of your kitchen, bathroom, or another room. Otherwise, you can add a walk-in closet or mudroom to your home. If you go for a bump out addition, you can get additional living space without having to deal with a large-scale construction.

Rear House Extension

Photo by Cooke Bros:

A rear house extension is an addition to the back of your home that gives you extra space. This is a complicated type of addition that has a few different methods for construction. This includes using piers or a foundation. Using piers means no digging is needed for the creation of a foundation because the piers will support the room. The foundation method requires a concrete foundation. The pier option works great for sunrooms and family rooms, whereas the foundation option is great for expanding the basement or ground floor. It is also important to note that the foundation option is more expensive than the pier option.

Second Story Addition

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A second story addition allows you to add another floor to your home if you can’t build outwards. If there is not enough space to expand the ground floor, you can get a second story addition to give you additional space. This type of addition will increase the value of your home. With a second story addition you can move around the rooms to maximize your space. This could mean moving bedrooms to the second floor while leaving the kitchen, dining area, and living room on the first floor. The process incudes removing the roof for the addition. A new roof, HVAC, electrical, etc. will have to be added for the new floor. You can also get a two-story extension to add length and width to your home if you are satisfied with the height of your home.


Photo by Matt Barnard:

Sunrooms are rooms that are attached to the house with large windows that let in natural light. They are not meant for permanent sleeping. Although they are connected to the house, doors are used to close off the sunroom from the main part of the house. Despite this being smaller than a full-sized addition, it can still be quite pricey.

Garage Conversion

Photo by Unique Builders Texas:

A garage conversion involves changing a garage into a livable space by changing the flooring, ceiling, and garage door. Garage conversions can be used for an additional bedroom, living room or a full accessory dwelling unit (ADU). An ADU is a complete living space with a kitchen and bathroom. In order to convert the garage into a livable space, a ceiling must be installed, and the garage door needs to be replaced with a wall.

If you don’t have a garage, you can get a garage addition with either an attached or freestanding garage. An attached garage is attached to the home and a freestanding one is unattached. These garages can be used to store your cars and tools, or you can use it as a workspace. Also, you can add a room above the garage to be used as a dedicated space or a space you cant out to tenants.

Attic/Basement Conversion

Photo by My Decorative:

You can convert your basement or attic into a livable space to add space to your home without changing the layout of your home. Attic and basement conversions have certain ceiling height and ceiling structure requirements. Only framed attics without roof trusses can be used for attic conversions and they must meet ventilation and insulation requirements. Also, attic and basements must have egress exits for outside access even if that means adding special windows.

Room Addition

Photo by Centennial Construction:

A room addition is when you add a single room, like a bedroom or bathroom, to the side of the house. This is a small-scale addition, restricted to the ground floor, that is less expensive than a full addition and only expands the size of a single room. Room additions can be used to suit any of your households needs whether that is for a family room, bathroom, or master suite addition.

First Floor Additions

Photo by Bee Craft:

First floor additions are additions to the first floor of your home for the purpose of extending existing rooms or providing additional entertainment spaces. This can mean extending the living room, kitchen, or dining room or even adding a sunroom or formal sitting area. Also, you can decide to have a master suite on the first floor to make your home safe for aging in place, which is an important aspect if this is going to be your forever home.


Photo by The Spruce:

A dormer is protruding window on a sloping roof that will make a home look bigger from the outside. Dormers are a great way to increase the curb appeal and thus increase the value of the home while expanding the attic space and providing extra living space on the top floor. Dormers are an architectural element that come in multiple styles – gable, shed roof, and hip roof – which you can choose from for your home.

Tiny House or DADU (Detached Accessory Dwelling Unit)

Photo by Building an Adu:

A tiny house, or detached accessory dwelling unit (DADU), is a living space that is separate from the home. It is an isolated living area that adds living space on the property without being attached to the house. DADUs are one of the most expensive types of additions because they a large-scale project that includes bathrooms, sleeping spaces, kitchen appliances, plumbing, wiring, and HVAC services.

Questions to Ask Yourself:

  • Will your family size change?

  • Will your financial situation change?

  • Will a home addition add useful real estate value?

  • How are you financing the renovation?

As you think about these questions, use your answers to guide you about the type of addition you want and, or need for your home. If your family size is going to change, consider how many extra bedrooms and bathrooms you will need. When planning for a home addition it is important to consider the real estate value you will be adding, especially if you are planning to sell your home.

Contact J.B. Stones to build your home addition. To get inspiration for your home renovation, visit our Pinterest. Follow us on social media pages to get inspiration and stay up to date on our blogs!

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