How Much Does It Cost To Add A Bedroom To A House?

Are you looking to add another bedroom to your house? It’s an exciting idea, but one that comes with a lot of questions. How much will it cost and what should you consider?

How Much Does It Cost To Add A Bedroom To A House?

Don’t worry, we’ve got the answers! In this article, we’ll discuss how much it costs to add a bedroom to your home, breaking down all the factors involved in the process, so you can make an informed decision.

So get your notebook out and keep reading to learn more and see if adding a new bedroom is right for you.

Size And Scope Of The Home Addition

It is estimated that adding a bedroom to a house costs in the region of $15,000 – $45,000 (see also “How Much Does It Cost To Turn A Shed Into A Tiny House?“). However, this is just a guide, as the size and scope of a home addition largely determines the cost.

Home additions can range from adding a single room to expanding an entire wing or level. The bigger the project, the higher the costs due to more materials and labor needed. 

Additionally, the complexity of construction will affect the budget. Factors such as structural integrity, electrical wiring, plumbing systems, and other elements within the building have to be considered when determining final costs (see also “How Much Does It Cost To Build A 1,500 Sq Ft House?“). 

Depending on location and specific needs, these services may need to be outsourced in order for your expansion project to meet all necessary requirements. 


Once you’ve established the size and scope of your home addition project, it’s time to consider what materials will be used. Depending on the type of bedroom being added, there are several factors that can impact cost. 

For instance, if you’re building an extra room from scratch or adding a new floor to your existing house structure, you’ll need more expensive materials such as wall studs, drywall, insulation, lumber for framing and roofing material. 

On the other hand, converting an existing space like an attic or garage into a bedroom requires fewer materials, since some items may already be present in that area.

The types of materials required also depend upon whether you plan to do all the work yourself or hire contractors for certain tasks like plumbing and electrical wiring. 

If DIY is your choice then you’ll need tools and supplies such as hammers, saws, nails, and screws. You might also want to purchase paint and wallpaper, depending on how much decoration you’ve planned for your newly remodeled room.

Building Up Vs. Building Out

Building Up Vs. Building Out

When adding a bedroom to a house, the cost will depend on whether you are building up or out. Building up typically involves converting attic space into bedrooms and is generally less expensive than building an extension onto your home.

This is because much of the structure is already in place, meaning that fewer materials and labor costs are needed. 

If there isn’t any existing attic space available then you may need to build an extension onto your home which can be more costly due to additional material needs such as brickwork and roofing (Looking at adding a soffit to your roofing? See our guide here).

Geographic Location

The cost of adding a bedroom to a house also varies depending on where it is located. The cost to add a bedroom will vary from region to region due to differences in labor rates and material costs. A few other things to consider would be:

Local Materials Costs

Depending on your area, materials such as lumber, drywall, and flooring can have different prices than other regions. You’ll want to research what materials are available in your area before getting quotes, so you know if they fall within budget expectations.

Labor Rates

Hiring contractors or tradespeople with specialized skills might increase the overall cost of building an extra room onto your home. Make sure you carefully review estimates provided by professionals to ensure they are offering competitive pricing.

Availability Of Skilled Workers

If there is not enough qualified help available in your area at any given time, this could lead to delays in construction or higher hourly wages paid out for contractors or tradespeople working on the project.

Labor And Permits

Labor And Permits

Generally, hiring professional contractors for labor costs can range from $3,000 – $20,000 depending on the complexity of the project. This includes materials such as framing lumber and drywall, as well as other services like plumbing and electrical work. 

Additionally, any necessary permits or fees associated with building codes must be taken into account when calculating the expense of adding a bedroom to a house.

Permits vary greatly depending upon local regulations; however, common examples include an electrical permit if wiring needs to be added or altered within the home, and a building permit which is needed in most areas prior to beginning construction. 

Site Preparation, Excavation, Demolition

Site preparation is the first step to adding a bedroom to your house. This includes clearing out any debris, leveling the ground and preparing it for construction.

Excavation involves digging into the ground to make room for plumbing, electrical wiring, foundation walls, footings, and other necessary components of a new structure. 

During this process, you may need to remove some existing structures or trees in order to create space. Lastly, demolition must be done if there are any obstacles that cannot be removed during excavation.

Demolition can involve breaking up concrete slabs or tearing down an old shed that’s in the way of your project. 

Depending on what needs to be demolished, it could cost anywhere from several hundred dollars up to thousands of dollars. All these costs should be factored into your budget when planning for an addition.

Clean Up

Clean Up

Cleanup costs will vary depending on the amount of debris created during construction (see also “Are Construction Costs Going Down?“), as well as any remaining mess that needs to be cleared away. In some cases, additional fees may be charged for waste disposal or hazardous material removal.

The first step in cleaning up after an additional project is removing debris from the site. This includes nails, screws, broken drywall, lumber scraps and other items left behind by contractors.

It’s also important to sweep floors and vacuum carpets if necessary before moving furniture back into place. 

Depending on the size of the space being renovated, this could require multiple trips with a dumpster or large trash bin for proper disposal of debris.


As we’ve seen, the cost of adding a bedroom to a house can vary greatly, depending on several variables. It’s essential to consider all factors involved when deciding whether to embark on such an undertaking. 

While it can be expensive, making sure the job is done right will ensure that there are no problems down the road, so expect to pay between $15,00-$45,000 and enjoy your new bedroom!

Luke Powell
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