To Add or Not to Add
If you are considering adding a sunroom or converting a garage to a family room, consider that adding more finished space adds value to the appraisal and almost every buyer would like a sunroom and/or a family room. There are, however, three categories of “but.” One is that if you need to sell within a short time, you might not get back the full cost of the work. (Nevertheless, if you do such major projects, don’t scrimp on the quality of the work: make sure the structural work is good and the materials are at least as good as those in the rest of the house. A bad addition can be more of a negative point than neutral!)
The second “but” is that at least in the case of the garage conversion, you are losing the garage space: most people would rather have the family room, if the house is otherwise small, but some potential buyers would rather have the garage. (And a sunroom addition might cut off light to existing rooms in the house - think about skylights or solar tubes, in that case.) The third “but” is that having extra space is good, but if the traffic pattern to get to it is not easy, it doesn’t add as much value as it otherwise would. The point of an addition should be to transform the rest of the house, as well as just adding square footage: then you really DO have enhanced value.

Reposted from
Motivations From Financial Author and Speaker 

