29. Create a Gateway to the Outside
Welcome more light and get easy access to your backyard by installing a sliding glass door in place of a wall. Opting for some glass between you and your yard — rather than brick, for example — makes your space feel airier and might just encourage you to get a little more sun.
Average Cost: It will cost you about $80 to $200 to knock out the wall and about $1,100 to $2,600 to install the sliding glass.*