Cool idea Steve, in college I of course needed cash so I started doing Christmas posters custom painted that covered the storm door of people’s homes, I also did window painting that looked like stained glass. I actually did pretty good now that I think of it, hummmm.
As for the name, this ones kind of difficult because houseposters to me sounds like posters FOR your house not OF my house. Maybe:
Dwellingposters.com - I like this one
well posterofmyhome.com is exactly what it is so that one makes sense.
Dwellingposters sounds better than homeposters but does everyone know what dwelling means? Probably not but it sounds nice and professional. Although people might think Dwelling is a last name of the artist.