We get this question a lot. Yes, payment can be postponed for a hoarding cleanup until the house is sold and the bill can be paid out of that. We would need to work with your listing agent to make sure the appropriate verbiage is added to the listing paperwork. Also, the cleanup would take place close to the listing go live date. The escrow company would have to confirm they have notated the additional verbiage related to paying for our fees. There is a 10% charge if escrow closes within 6 months of listing. There is an additional 5% charge is escrow closes after the 6 month mark.
Most residences are sold to an investor that may flip it or demolish it. If the seller wants to remodel after the cleanup, that would not be feasible.