IKEA HACK: DIY Window Wall Built-in

Discover how to create a custom window built-in with bookcases, a window seat, drawers, and hidden storage! The best part? It’s an IKEA hack! 

If you’re looking to add both style and functionality to your space, you’re in the right place. In this blog post, I’ll walk you through how to create a built-in bookcase and drawer unit for your space to add a ton more storage and completely elevate the space. 

Building a built-in isn’t just about creating storage – it’s about crafting a space that’s just as functional as it is beautiful. By customizing IKEA furniture and building bookcases to fit your room’s dimensions, you’re not just adding functionality; you’re creating a unique environment that looks waaaaay more expensive than it is. From designing the layout to selecting materials and finishes, every step of the process is an opportunity to make your space YOURS!

How to DIY Window Wall Built-in

1. Measure the space for your built-in

Measure the space for your built-in and determine the dimensions for the base and bookcases. I find it easiest to sketch out the layout before I get started, including all the dimensions. I don’t think giving you specific measurements will help you much, because your room will likely be a different size and shape than mine.

2. Build the base for your built-ins

I actually made 2 shorter bases, the side of the wall. These were built out of 2x4s and I used my miter saw to cut the lumber. It’s easiest to have a space where you can lay out the boards when you’re assembling.

When you have the base, create 2 more of the same bases. These will be the top of the bottom section of the built-ins. Then, create the vertical pieces that will hold up at the top of the bottom section. Make sure your vertical pieces are just barely taller than the IKEA drawers so the weight is on the 2x4s instead of the drawer tops when you start on the bookcases or if you’re sitting on the window seat.

3. Assemble the IKEA dressers according to the instructions

 I ended up needing 4 units, but this will depend on how wide your room is. Last time I checked the ones I used were sold out, but for sure check!

4. Cut plywood

Cut 2 pieces of plywood the length & width of the built-in to create the top of the window seat & the foundation for the bookcases. I used a circular saw with a Kreg jig, but you could also use a table saw. 

5. Construct the bookcases using plywood sheets

Construct the bookcases using plywood sheets, cutting them to size and assembling them with wood glue and construction screws. Again, I don’t think it’ll be much help to tell you the dimensions, but I started by basically creating a box with an open front. Two rectangles for the two sides, a back, and a top. You won’t need a base because it will be resting on the base you already created.

6. add 2 pocket holes to each board.

Use a pocket hole jig to add 2 pocket holes to each board. I did pocket holes on one side of each board. Use corner clamps to stabilize your boards and assemble your bookcase. I made two of these bookcases to go on either side of the window.

7.  attach a piece of plywood to the back of your bookcases

Cut down and attach a piece of plywood to the back of your bookcases. This will give you something to attach the bookcases to the studs in the wall.

8. find the studs in your wall

Before you place your bookcases one top of your base, make sure to use a stud finder to find the studs in the wall. I indicated where the studs were by marking it in the corresponding spot on the base because you’ll be covering the wall once you life the boxes onto the base.

9. Lift the boxes onto the base

Lift the boxes onto the base and attach the bookcases to the side walls and back wall ensuring they are securely anchored into studs.

10. Start trimming out your built-in base

I decided to trim around each of my drawers, across the top and bottom of the base, and in between each of the drawer units for a finished look. How you decide to do this is totally based on design/look preference.

Decide how many shelves you’d like. I decided to go with 3 shelves, but I also created a deeper bin at the bottom of each bookcase. This was practical because I didn’t want my boys climbing up the bookcase, but I also liked the way it looked. To create the bins, I cut the plywood down for the front of the bin, attached it to the bookcase, then added a hinge to the back of the bookcase and attached a lid. I also ended up adding trim to the lid and the top of each bin. I use this for blankets and stuffed animals & I love it!

11. Create your shelves

I didn’t need my shelves to be moveable so I created permanent shelves. I did this by cutting down 2 pieces of plywood for each shelf. Then I used a small piece of scrap wood and attached them to the back and sides of the bookcase, being sure they were level. Then I attached the plywood to the top and bottom of these pieces. Add a piece of trim to the front of each shelf. 

12. Finish trimming out the bookcases in your Window Wall Built-in

I decided to add trim to the top and bottom of the bookcases, on the front and visible side, and up the sides of the bookcase on the front and side. 

Fill any visible screw holes or gaps with wood filler and sand smooth. I also caulked all seams so a super clean finish. I highly recommend doing this! Prime and paint or stain the entire built-in unit in your desired color. I always use a cabinet/furniture paint with built-ins because they’ll see a lot of interaction. Behr makes a great one.

Allow the paint or stain to dry completely before adding any decorative accents or accessories. I added knobs to the drawers and a cushion for the window seat. 

How do I ensure the Window Wall Built-in unit is securely anchored to the wall?

To ensure that the built-in unit is securely anchored to the wall, start by locating the wall studs using a stud finder and mark their positions. Once you’ve determined the stud locations, use heavy-duty screws or lag bolts to attach the back of the built-in unit directly to the wall studs. Make sure to drive the screws or bolts into the studs at regular intervals along the entire length of the unit to distribute the weight evenly and provide maximum stability. Additionally, consider using L-brackets or corner braces to reinforce the corners and joints of the built-in unit, further enhancing its structural integrity. Finally, check and tighten the screws or bolts every few months to ensure the built-in remains securely anchored over time.

Are there safety considerations when building a built-in?

Absolutely, safety should be a top priority when building a built-in. Ensure that all materials used are sturdy and free from sharp edges or splinters, especially if children will be using the space. Anchor the built-in unit securely to the wall to prevent tipping or toppling, especially if it’s tall or heavy. Consider using childproofing devices on drawers and cabinets to prevent little fingers from getting pinched or trapped. Additionally, avoid placing heavy items or fragile objects within reach of young children, and be mindful of creating a clutter-free environment to reduce the risk of trips and falls. Regularly inspect the built-in unit for any signs of wear or damage, and promptly address any safety concerns.

Now that you’re armed with tips, tricks, and instructions, it’s time to roll up your sleeves and bring your vision to life! Share your DIY journey with us on Instagram @SarahFlipsIt! From cozy reading nooks to secret hideaways, the possibilities are endless. Happy building and I’ll see you on IG!