Hmm, I’m not really sure.  It doesn’t seem likely.  Do you have any specific concerns, though?  Something that makes you think you need a house blessing?
assitant
Not as much, no.  It’s usually used when people are building, I think.
assistant
How do I bless a house?
user
Are you looking for a blessing to say before eating or something like that?
assistant
No, to bless my new house
user
There’s a blessing for houses, right?  In the Bible, people do say special blessings before they begin building.
assistant
How about if the building is already standing?
user