You might decide on a home extension to get added room for a growing family, but you may not be thinking of how that extension really adds value to the home itself. It's good to think of how any change might affect your home's resale value if there is a chance you might put it on the market sometime in the future. Note a few home extensions that may actually add value to your home and discuss these with a contractor or even a real estate agent if you want to know how much value they might add.
Many homes see an increase in value if there is an increase in bathrooms; even a powder room can mean not having guests walk through your home to use the facilities, and a bathroom with a half shower can also mean less congestion for families every morning. You might consider extending the home near the master bedroom to create a master suite with its own bathroom and this too can add value to the home.
You may have enough bedrooms for your family now, but remember that when you sell a home, it's often classified by the number of bedrooms. You might consider adding an extension of a room with a full closet so it functions as a bedroom, but you can use it as an office, child's playroom, den, and the like. Have your contractor customize the closet with storage accessories you can use now but which can be moved around or taken out as needed, if and when you put your home on the market.
Families often prefer mudrooms in the home as this gives children a place to keep their school backpacks and for everyone to slip out of their shoes before walking on the home's carpeting. A mudroom also means keeping shoes, coats, and other items out of sight without crowding a front closet. If you live in an area with lots of families, note that a mudroom might make your home stand out on the real estate market if you should decide to sell it.
A patio or deck is a nice feature for many homes, but during long, hot summers, they can be very uncomfortable even with some type of awning or shade. There may also not be much privacy with a deck or patio. A sunroom can mean added comfort during any time of the year and some privacy from neighbors, while still enjoying the outdoors.