OK. I'll be right next door, so let me know once you get a firm statement out of them.
Literal
OK. Next [locative-に] exist-[because-から], verbal-pledge be-able-to-take-[when-たら] tell.
言質 (げんち) literally 'word pledge' is a legal/formal term meaning a binding verbal commitment — 'getting X on the record' in spirit. Note the potential verb 取れる ('to be able to take'), from 取る. The sentence uses multiple compressed clauses typical of rapid, colloquial Japanese: each clause just chains on with its own particle or て-form, no connecting conjunctions.