Your message has been sent
    and our manager will contact you shortly.


    Home | How to do it | How to add a window to an existing wall

    How to add a window to an existing wall

    Did you ever look at one of the walls in your home and think to yourself, “This would be the perfect place for a window”? If so, you’re not alone. Tons of people have wondered why their walls didn’t come with windows in the first place, so they went ahead and had them installed.

    Large four pane window looking on summer backyard with pool and garden

    There are plenty of things to consider before adding a window to a wall, though, the most significant being: How can I best do this at a price range that’s within my budget? We’d like to help you determine that with the help of our experts here at Legacy Service. We offer a wide variety of windows options that are not only stylish but also designed to increase your home’s energy efficiency. They’re perfect for adding into an existing interior or exterior wall!

    Looking for home improvement company?
    Find out how much your project will cost

    Not a real zip code.

    So, step out of the darkness and into the light. In this blog, we’re going to explain why you should go ahead and add another window as well as the proper steps to take in doing so. If you’d like to schedule an appointment with our consulting team, contact us at 215-798-9790 today!

    Reasons to Add Windows to Existing Walls

    There are plenty of reasons why you should add a window to an existing wall in your home. Our three favorites include:

    Soak up the sun – Unless you’re a vampire, your home could always use more light, no matter which room you’d like to add a window to. So, soak up the sun with the installation of new construction windows. You’ll save electricity by being able to keep the lights off during the day, and you’ll improve your mood with the help of the natural sunlight.

    Take in that view – No one likes staring at a brick wall, but most people do love staring out a window, whether they’re looking into nature or a busy, people-filled street. Adding more windows into your home provides you with better views of the outside world from the comfort of your own home.

    Increase your home’s value – You may be hesitant about spending money to add a new window, but the good news is that it will provide you with better value in the long run. If you eventually look to sell your home, you’ll be able to ask more for it. High-performance energy-efficient windows can also help you save money on your energy bill each month.

    Let us know if you have another reason! We’re always looking for feedback from homeowners.

    Can You Put New Construction Windows in an Existing Home?

    Yes, it’s entirely possible to add a new window into one of the existing walls of your home. In fact, if you’re looking to brighten up your home, we highly encourage it. However, like every home improvement project, there are certain steps you need to take to make sure it gets done properly. They include:

    1. Do your research – before getting started, take the time to research a few important items. First, find out what the local building requirements are for adding a new window. Then, determine the general area to place your window as well as the type. Last but not least, do a little investigative work to make sure you’re avoiding electrical wiring, ductwork, and plumbing.
    2. Purchase the correct materials – If you’re doing the project yourself, you’ll need to purchase the correct materials. They include but are not limited to interior and exterior window casing, shims, and drip-cap flashing. If you would rather hire an expert, like our team at Legacy Service, we’ll do that for you.
    3. Rent the right tools – If you’re choosing to complete the project, you’ll have to either rent or purchase the right tools. Ones we recommend include a tape measure, stapler, level, caulking gun, hammer, saw, stud finder, carpenter’s square, razor knife, and drill with a screwdriver bit.

    Construction Worker Installing New Windows In House

    How to Add a Window to an Existing Wall

    Now that you’ve done your research and gathered your materials and tools, it’s time to get to work! You may want to hire a company so that you won’t have to do this, but it’s still nice to know what’s going to take place. Here are the steps for adding a window into an existing wall:

    1. Measure, measure, measure – It’s important to make sure you’re measuring correctly when doing any home improvement, but it’s essential when you’re cutting a hole in your home. Measure everything at least twice.
    2. Create the opening – Next, comes the part where you have to be exceptionally careful because you’ll be cutting a large hole in your home. You’ll probably have to cut the opening larger than the rough opening to accommodate the supporting frame and header. It may take an entire day to create the opening as well as remove the drywall and frame in the window.
    3. Frame the window – Make sure that your window is structurally secure and will not sag over time by using the proper framing methods. Put lower wall stud cripples in underneath the window opening to support the windowsill, and allow water to drain by installing the windowsill at a slight 1-inch slope.
    4. Finish opening the wall – Once the framing is in place, you’ll be able to finish opening the wall. Drill pilot holes from the inside at each order to locate the window opening from the exterior of your home. A 12-inch drill bit should be enough to work. Then, draw a line using a straightedge to connect the drill holes, which will be the area for you to cut out.
    5. Install the window – Finally, you’ll be able to place the window. Use a nailing fin or integral flange to secure your new vinyl or metal windows to the house. This helps protect your house from moisture infiltration.
    Find the qualified home improvement company

    Not a real zip code.

    How Much Will it Cost to Add a New Window?

    If you’re looking to add a window into an existing brick wall or another type of wall, you’ll want to know the potential costs before you begin. No two projects are the same, so we will not be able to provide you with an exact price, but we can give you a range that you can expect. Adding a window into an existing wall requires a combination of siding, framing, and finishing work, so the price range will usually run between $1,000 and $5,000 per window.

    The factors that will affect a new window installation into an existing wall include:

    • Framing typically costs between $1,000 and $2,500.
    • The installation of insulation can cost between $450 and $3,000.
    • Rerouting electrical will usually cost between $150 and $500.
    • The cost of trim repair can range between $300 and $1,000.
    • Siding repair will typically cost between $300 and $1,100.
    • Drywall installation tends to cost about $1.50 per square foot.

    Large wooden window with beautiful curtains in sunny day

    Frequently Asked Questions About Adding a Window to an Existing Wall

    Here are some of the questions that we’re most often asked about installing a window in an existing wall.

    How much does it cost to add a window to an existing wall?

    The cost to install a window in an existing wall will differ from project to project. A price range that you can expect for the combination of the siding, framing, and finishing work is between $1,000 and $5,000 per window. If that’s within your budget, get in touch with a local contractor. You can schedule a free estimate with our team to find out the cost to add a window if you need to replace five or more windows on your home.

    Can I put a window in a load bearing wall?

    It’s possible to add a window to a load bearing wall, but it can be a difficult situation. The reason why it’s so tricky is that it can be dangerous to cut into a load bearing wall since it supports the structure. Its absence could lead to the collapse of a room or even the entire home. Before you decide anything about adding windows to a house (especially when it’s a load bearing wall), get in touch with your local experts.

    Can I add a window to the side of my house?

    In most cases, you will be able to add a window to the side of your house. Not only will it offer nice views to the people inside, but it will also brighten up a room. Just remember that it’s in your best interest to consult a professional before you make any decisions or start your project.

    Do I need planning permission to add a new window?

    If you’re simply replacing a window that’s a similar size and style, you don’t need to apply for planning permission. However, you may need planning permission if you’re adding a new window to a house. Installing a new construction window in an existing home can be a complicated project, so check with your local building department to see if you need the proper permission.

    Can you put new construction windows in an existing home?

    It’s entirely possible to put new construction windows in an existing home, whether you’re replacing an old window or adding a new window to a house. New construction windows can be a good choice because they’re more substantial and will not reduce your view. Contact your local home construction professionals to learn more about how to add a window to an exterior wall or how to frame a window in an existing wall.

    Does adding windows increase home value?

    Yes, adding windows to your home will help increase the value of your home. Not only do they look beautiful and add more natural light into your house, but they also improve the overall energy efficiency of your home. If you’re installing a new window in an existing wall with vinyl siding, get in touch with your local home construction company to get started. Our team provides full replacements of five or more windows.

    Can you put a window in an internal wall?

    Yes, it’s possible to put a window into an internal wall, even in older homes, although that may require major demolition and complex engineering. However, many people believe the end result is worth it. Building a window in an interior wall can help your home achieve a contemporary feel while opening it up and making it feel bigger and brighter.

    Find the qualified home improvement company

    Not a real zip code.

    How do you install a window in a blank wall?

    Installing a window into a blank wall is a great way to brighten up your home and help save energy. You can either hire a local window company, like Legacy Service, to complete the installation for you, or you can do it yourself. If you choose to do it yourself, follow these steps:

    1. Lay out the window size.
    2. Shop for the right window.
    3. Cut the drywall.
    4. Remove the insulation.
    5. Use beams to temporarily support the area.
    6. Cut the studs out.
    7. Frame the rough opening.
    8. Cut the hole.
    9. Add flashing to the sill.
    10. Set the windows.
    11. Add flashing to the sides and top.
    12. Add the insulation.
    13. Drywall.
    14. Install the trim.
    15. Complete the exterior siding and sealing.

    How hard is it to put a window into a wall?

    It’s possible to put a window into an existing wall, but it can be a difficult task, especially for someone with less experience in home construction. Many homeowners would prefer to hire a team of professionals to do it for them. If you need a full replacement of five or more windows, please feel free to get in touch with our team at Legacy Service.

    How much does it cost to cut a wall for a window?

    No two projects are the same, so the costs will differ for every homeowner. However, the average cost of window replacement tends to range between $1,000 and $5,000 per window. If you’re cutting a rough opening into a concrete wall, you can expect to pay between $350 to $600 based on the size of the opening. If you’re cutting a rough opening into wood framing, you can expect to pay about $150 to $250 based on the size of the opening.

    Can you add more windows to a house?

    Yes, in many cases you can add more windows to a house. If you’re looking to brighten up your home, new windows are the best way to add more natural light to specific rooms. You may need to obtain planning permission to install a new window, so remember to check with your local building department.

    Is adding a window a structural change?

    Adding a window by cutting into a wall is typically considered a structural change. Whether you’re adding an entirely new window or increasing the size of a previous opening, you may be weakening the structure of your home. If you’d like to add new windows, it’s best to contact a professional in residential construction to help you get the job done.

    Can you add a window to a brick house?

    It’s easier said than done, but the good news is that a new window can be added to a brick house. However, this type of job is best left to professionals because a fair amount of knowledge regarding structural load capacities of steel lintels, brick arches, and more, is required. In most cases—the large the opening, the higher the costs.

    How long does window installation take?

    How long a window installation takes will depend on several factors, but in most cases, it will take about 30-60 minutes per window. A highly skilled installer will be able to install between 10 and 15 windows per day in a home. Factors that affect the length of the installation process include the floor the windows are on, how large they are, whether rot and debris need to be removed around the frame, and more.

    Can you add a window to a house without planning permission?

    In most cases, you will be able to add a window to your house without needing to obtain planning permission. The reason for this is that it’s usually included in your PDR (permitted development rights). However, there are always exceptions to the rule, so it’s best to check with your local authority before you get started.

    Are You Going For It?

    Adding a new window to an existing wall is an extensive project, but it’s worth it in the end. You’ll have a better view of the outside, and you’ll allow more light into your home, helping you save costs on electricity in the long run.

    At Legacy Service, we’d like to help you install your new windows, whether you’re looking to add in a new one or replace an old one. We put careful consideration and effort into our work, so you can rest assured that your windows will not only be beautiful but will also have a long lifespan.

    So, are you going for it? If you’d like to learn more about installing or replacing windows, as well as the benefits you can receive from them, give our team a call today at 215-798-9790 or contact us at

    Find reliable home improvement company near you