Unlike some other Contractors, you'd certainly be incentivized (is that a new word?) to get the job done by the Closing Date !
I think a Prospective Buyer might have a problem with the Listing Agent taking on the job and possibly cutting corners and just doing the bare minimum to get his Commission; so you'd have to provide assurances that it's going to be quality work.
With the proper disclosures, I'm sure this could be done to the satisfaction of all.
I have a Competitor who is also a mason (bricklayer) and he's always doing masonry and building fireplaces and new chimneys . . . . but usually for the new Owners AFTER the sale.
That's also a mechanism for him to get another source of leads flowing . . . . but I can spot one of his chimneys from a ¼ mile away.
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Dale C. Hittle of GOLDEN RULE PROPERTIES in Glover, Vermont
Where We're Always Striving To Put Together "THE FAIR DEAL"