Browse the largest set of home addition plans online. Each home extension features before & after photos, 3D virtual floor plans, and addition building costs. Start here!
House additions come in all sizes, from tiny decks to large rooms. See what size and type of addition can optimize your home's floor plan. Discover 13 beautiful home addition ideas for any budget.
From cozy bump-outs to luxury suites, transform your space with inspiring designs today. You have searched for Room Additions and this page displays the best picture matches we have for Room Additions in January 2026. Houzz has millions of beautiful photos from the world's top designers, giving you the best design ideas for your dream remodel or simple room refresh.
Well-planned home addition ideas, whether simple room extension ideas or a functional second-story addition, add significant value and needed space, especially for a growing family. Add extra living square footage to your home with a room addition plan. This collection includes additions such as a guest suite, sitting room and home office.
See designs on Page 1. Create space without having to move. 10 home addition ideas: Home office, sunroom, home gym, bump-out kitchen, and more.
These selected plans for home additions will help you weigh your options when you're running out of space in your current home. Perhaps a sensible idea for your family is to add a room or two. Want a home upgrade? Look at these before and after home additions.
Get ideas to improve your house now. Home addition would be adding more value if you planning to extend or remodel a home. Here are the 15 best home addition ideas to expand your square footage.
