Great question — answering as the UphillTech team:
Could be " Dream House (1981)". From this page, the synopsis: Charley Gross is a vacationing Georgia construction worker who meets and falls for Manhattan's comely Director of Urban Renewal, Laura. Despite facing rejection, Gross sets out to build a dream house for the both of them in one of New York's ghetto neighborhoods. Here's a promo pic from the movie: There's not much information on the movie (apart from synopses), but there's a news article here .
Full answer by rumandwrite: https://movies.stackexchange.com/a/18244 (CC BY-SA 3.0).
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