No, it was just one builder. There's nothing unusual, just that it was self built.
I think it's just two ways to solve this one, to find it (Fb group page, that I can't remember which) or working on the words.
To help you out,
A__ __ ___ _____ (3 - 2 - 3 - 5)
Acronym
A___ (4 letter word)
And the builder's surname
______ (6 letters word)