How about a prefab house that features an expansive wall ... Another design highlight is the optional first-floor sunroom, created by double-glazed PVC windows installed side by side.

On average, the addition of a sunroom ranges from $20,800 up to $72,600. Most homeowners pay around $47,000 for a sunroom, which includes labor. Much of the cost depends on how large the sunroom ...

Four Seasons’ sunrooms and other home additions are modular — the preconstructed components keep costs low and construction time short. The company manufactures a variety of styles and ...