Existing unpermited addition in potential flip?

[Aria Drexler]

Hello,

Newbie investor here. I am in the process of putting together my first wholesale, and have what may be a dumb question. The home has what looks to be an unpermitted add-on sun room that the owner built himself. It probably adds about 500 sq. ft., but I am unsure how that would factor into the ARV sale price if at all, since I have been basing comps off the base square footage of the house. I know I often see listings with descriptions like "non-conforming extra bedroom or sun room" in this area, so it happens. I am also wondering if unpermitted additions cause problems when flippers go to actually permit a renovation (e.g. if the city were to come for a visit, notice the room & make you rip it out).