HOME ADD-ON is a term used to describe an addition to a home that increases its value and livability. The crossword solutions for this term are SUNDECK (7 letters), MAKER (5 letters), and LESS (4 letters). SUNDECK refers to a deck or patio area that is built onto the side of a house, usually with a roof or other covering. MAKER is likely referring to a contractor or builder who specializes in constructing these additions. LESS is likely referring to the cost of the addition, as it can be LESS expensive than other home improvements.