A: In Massachusetts it is advisable to have an attorney represent you in negotiating a Purchase and Sale Agreement. Purchasing a home is usually the most expensive item that a person buys in their lifetime. Regarding closing costs, they are driven mostly by your lender.
A: The usual remedy for a Seller breach of a Purchase and Sale Agreement is known as specific performance. That means that you could sue the Seller to force him to complete the sale of the property. To see if there are any other remedies, I would have to review the agreement.
A: Usually permitted alterations are cosmetic, and non-structural in nature. Often times the Landlord will require the Tenant to submit plans, or in the alternative the lease will describe the fit and finish that would be allowed.