It can cost anywhere from $500 to $5000, depending on the size and complexity of the project. One way to save money is to build the bookshelves yourself. You can find plenty of tutorials online that will show you how to do it. All you need are some basic carpentry skills and some tools. If you're not comfortable doing it yourself, you can always hire a contractor to do it for you. But be prepared to spend a lot of money - built in bookshelves are not a cheap project!

It depends on the size and complexity of the shelves, but generally speaking it would cost between $200 and $1,000 to have built-in bookshelves installed in your home. The average cost of built-in bookshelves ranges depending on the type of wood you choose, the design or style of the shelves, and whether you have them installed by a professional or do it yourself. You can expect to pay anywhere from around $200 for a simple shelf installation to upwards of $1,000 for more intricate or customized designs.