• Escrow Funds must be held in a non-interest-bearing account;. Agreement on Costs: The parties agree on the estimated cost of the repairs and how much money will be held in escrow to cover these expenses.Download Massachusetts Escrow Holdback Agreement Addendum template, modify and send for signing using BoloForms Signature. It will show on a HUD-1 Settlement Statement. Essentially, a repair escrow is an agreement between the Buyer and Seller to set aside money to complete required repairs after the transaction closes. This ensures that both the buyer and the seller are protected and that the transaction is completed smoothly. This agreement can be used when the seller has agreed to perform work on the property prior to closing. You should use this addendum to real estate purchase contract whenever the seller has promised to complete repairs or work done on the home. Generally, improvements, alterations, and repairs on the subject property must be complete when the mortgage is sold to Fannie Mae. Payments from Escrow Accounts.