Japanese (or possibly other Asian) comedy – from 1990’s I think.
Family lives in small house. Grandfather (or some elderly relative) comes to live with them. House too small so they dig up basement to accommodate him.
Hilarious antics. Don’t think I’ve ever laughed so much watching a movie!
I think this film is Japanese. I remember that scene of the father wearing his tie as a headband before embarking on the drastic home modification in the clip shown when it was reviewed on British television. The time period would be late 80s to mid 90s.
Yes I remember the father wearing the tie as a headband… do you recall the name of the movie?
The Crazy Family (1984)?
https://www.imdb.com/title/tt0087377/
Thank you @GG, SOLVED!
Marking “Solved.”