Ask for two written estimates: cash needed through registration, and annual costs after completion. Otherwise recurring charges can get mixed into the closing figure or omitted entirely. Also clarify whether the proposed buyer and ownership structure are permitted before paying non-refundable...
One more caveat: don’t let the inspection dispute hide a possible appraisal gap. Even if you accept the energy problem, the lender’s valuation may not support the agreed price, and that can be a separate risk depending on your financing wording. Get clarity on the inspection clause, deposit...