Projects

Considering turning a window into a door? Here’s what to know!

Trying to decide if this project is right for you? We’ll walk you through some preliminary steps you can take to assess the feasibility of converting a window into a door — plus we’ll help you start thinking about cost.

The photo on the left shows an empty room with a white rug and windows with white grilles. The photo on the right shows the same room with a black folding door in place of the windows and interior decorations.

The photo on the left shows an empty room with a white rug and windows with white grilles. The photo on the right shows the same room with a black folding door in place of the windows and interior decorations.

Loading component...

Maybe you want a more convenient entrance, better connection to your outdoor living space, or the option to bring in abundant fresh air and natural light — or maybe you’re looking to add all of the above. Whatever the case, you should know that turning a window into a door is a common project and often completely feasible.

We’ll walk you through some preliminary research you can do to begin assessing how such a project might work in your own home. Take these steps before you call a pro, and you’ll be better prepared to ask good questions and have a more nuanced understanding of pricing.

Planning a window to door conversion

If you think converting a window into a door is the right move, you can get started by looking closely at your space, thinking through your vision, and doing a bit of research. Here’s how to start planning and preparing:

1. Assess your chosen window

First and foremost, take a close look at the space from both the exterior and interior. Understanding existing conditions can clue you into whether your project is going to be larger or smaller in scope.

What’s needed to make a smooth transition from inside to outside? Depending on the location of the window, you may need to add stairs, a patio, a deck, or some other type of landing to ensure a comfortable and aesthetically pleasing path from one living area to another.
How big is the window? The size of the window will also impact the scope of the project. If you’re making a small window into a larger door, you will likely need a professional to help you enlarge the window opening and build new framing. If you’re turning a large window into a smaller door, you may wind up needing to patch up your home’s siding or exterior material.
What’s happening on the interior? Are there electrical outlets or other utilities in the project zone? If you need to move electrical or plumbing, your project may be a bit more complex. Either way, a job of this scale will often require a permit.

Bottom line: You don’t need to have all the answers as to how the project could be accomplished at this point. A pro will help with that. Instead, you want to focus on identifying aspects of the existing window that could expand the scope of the project. This gives you a chance to consider how big of a project you're willing to take on. It will also help you think through good questions to ask your pro.

2. Consider your door options

What type of door are you imagining? The answer to this question will give you more insight into the changes that might be required and the type of door that might fit your budget.

Replacing a window with a single-panel patio door: This might be the simplest solution for fitting into your existing rough opening. If you are trying to stay within your current rough opening, your door will need to be a bit smaller than your current window. We offer single-panel hinged patio doors through our 200 Series, 400 Series, A-Series, and E-Series product lines.
Replacing a window with a French door: Turning a window into a French (hinged) patio door with two panels will allow you to open both for better flow of people and fresh air. Just consider whether there’s space for the doors to swing inward or outward — we offer both options through various product lines.
Replacing a window with a sliding glass door: If your space is too small to accommodate a door that swings on hinges, a sliding (gliding) patio door will give you the benefit of two panels of glass for more natural light and save space by opening flush with the wall. Sliding patio doors are available through all our product lines.
Replacing a window and more! If you’re considering more than just converting a window (or windows) but also removing a larger section of wall, you might have room for an oversized patio door. Folding Outswing Doors work well in a remodel because they run along a single track, so they don’t require extra-thick walls, and they can be customized to include the number of panels you desire.

Bottom line: A successful conversion will likely include modifying your rough opening. A rough opening is the hole in the wall where a window or door fits. The door you select will dictate what kind of modifications will be required, but generally, the more dramatic the change, the more modifications will be needed. So, thinking about the door is an opportunity to decide how big the scope of your project should be. It’s also an opportunity to start considering the cost of the door. Broadly speaking, a larger door will come at a larger price.

When this Ranch home was remodeled, the homeowner went all in on indoor/outdoor living by replacing a standard back door and row of windows with a Folding Outswing Door. The new door opens up her entire back wall to the deck and backyard.

house painted white with large patio doors leading to a wooden porch with steps and outdoor furniture

house painted white with large patio doors leading to a wooden porch with steps and outdoor furniture

Loading component...

3. Measure your existing window

Getting a rough idea about the size of your window can be helpful, especially if you are looking at a simpler conversion — like replacing a large window with a single-panel door. Measuring the window can help you begin comparison shopping. For example, our doors are sold at The Home Depot® stores as well as building supply dealers. You could visit either if you want to start understanding what a new door might cost.

Bottom line: The measurement needed to actually order a door will be technical and could be complicated by the fact that your rough opening might need to be adjusted. This is yet another reason that we recommend working with a pro on a project like this. Still, taking a rough measure will help you start understanding door prices.

4. Review permitting requirements for your area

Depending on your city, county, or state, you may need to explore necessary permits or approvals before you begin your project. This process may affect the timing or total cost of your window-to-door transformation, so don't be afraid to ask for advice from your contractor or trusted professional if you have questions along the way.

Bottom line: It’s always a good idea to ask your contractor how they usually approach the permitting process. A good contractor will have an understanding of local regulations, but it doesn’t hurt to confirm that they will take responsibility for pulling the necessary permits.

How much does it cost to convert a window into a door?

The cost of converting a window into a door will depend almost entirely on the design you have in mind and the scale of the project itself. While it should be expected that the price for this type of transformation will be higher than a standard window replacement, here are a few important factors that will have the biggest impact on the final price tag:

Labor

Your labor costs will be impacted by both the complexity of the project and your home's location. Prices may vary based on your regional labor market and the amount of time your project will take to complete.

Materials

The cost of materials for your window-to-door conversion project will be based on the door type, its frame, and any hardware that you choose. Be sure to ask your contractor about any supporting materials that may be needed to maintain the structural integrity of your home.

Structural modifications

Speaking of structure, if the conversion requires significant changes to a room (such as reinforcing a wall), the cost of your project will likely increase. These measures will be taken to preserve the safety and durability of your home and should be accounted for when thinking about your total budget.

Siding and exterior modifications

Depending on the location of the new door, you may need to modify your home's siding or trim. This can add costs in terms of labor, materials, or any additional work needed to protect the function or form of your exterior. Some materials are easier to modify than others. For example, brick and stone facades will likely be more challenging and costly to modify.

Bottom line: If you are considering DIY, we advise you to speak with a pro first to make sure you understand the full scope of the project. You may learn that the steps involved go beyond your experience. For example, you might need to calculate structural loads in order to frame the new opening correctly.

Loading component...

What steps are involved in a window to door conversion?

Once you've made your game plan and have considered all the potential costs and considerations, you are ready to learn more about the logistics of window-to-door conversion. Although every home is unique, here are the basic steps that you can expect to encounter after your project officially begins:

1. Removal of the window
Your contractor will carefully remove the existing window, including its frame, glass, and trim.

2. Preparation of the opening
The window opening will be modified to accommodate the new door size and frame, and any necessary reinforcements will take place to protect the structure of your home's walls and frame.

3. Installation of the door and door frame
The door frame will be secured in place, and the panel will be adjusted for proper function and fit.

4. Finishing touches
All of the necessary finishing work will be completed, including painting, caulking, and the trim installation.

Loading component...

Time to turn your window into a door

Despite this being a common project, it can be complex. We can help you find a local contractor who specializes in our doors.

Loading component...

Up next:

Tools

Try designing your perfect door

Our homeowner-friendly visualization tool allows you to try out different finishes, hardware, grilles, and more. It's the easiest way to start bringing your vision to life!

Try designing your perfect door

Loading component...

Infinity pool with wall of windows and Weiland Aluminum Wood Liftslide doors

Products

Exterior doors

Whether you're looking for front doors, patio doors or moving glass walls, this is your opportunity to create inviting experiences that bring out your home's character.

Explore our doors

Loading component...

Hinged Patio

Sliding Glass Door

Remodel

Replacement

Indoor/outdoor

Home improvement

Loading component...