How to Install White Built-In Bookcases Around a Window

Linn’s built-in project is a great example of how transforming freestanding bookshelves into attached built-ins instantly upgrades a room. Here’s her account of the process:

My husband and I built these custom built-in bookcases ourselves. Our old bookcases weren’t attractive and didn’t provide nearly enough practical storage, and we didn’t want to spend a lot of money hiring someone to do the work—so we decided to tackle it on our own.

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I’ve always loved the cozy, architectural look that built-ins give a room. They add character and charm in a way that freestanding furniture can’t.

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The project felt intimidating at first, but once we broke it down into smaller steps it became very manageable. We built two large wooden units in our carport (our makeshift woodshop), painted them white, and then moved them into the room.

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We used beadboard for the backing, which adds a nice visual texture and a finished look. Assembly and installation took longer than expected—especially the finishing details like molding and caulk—but those final touches are what make the project look polished.

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Now the built-ins look great and hold many more books, which was the main goal. – Linn

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Take a moment to compare before and after photos. The room appears taller and more open with ceiling-height built-ins—the vertical lines visually elongate the space. The beadboard backing provides subtle detail that enhances the overall design. If you want to learn more about the build process and see more photos, check Linn’s blog for her step-by-step account and tips.

If a full custom project feels like too much, you can achieve a similar built-in appearance with ready-made bookcases—such as popular modular units—that you assemble and then finish with trim and crown molding for a seamless, built-in look. With careful planning and attention to trim details, you can get the charm of built-ins without hiring a carpenter. Happy building!