Find forms for legal topics beginning with IL. A Massachusetts lease agreement is a contract between a landlord and a tenant for the renting of property in exchange for payment.If you do plan to sign a written lease, read it carefully. A landlord may try to rush you into signing a lease. In Massachusetts, landlords can require a security deposit at the start of the lease. The amount is usually not more than one month's rent. 1. Provide the names and entities of the Landlord and Tenant. A Massachusetts lease agreement is a legally binding contract between a landlord and a tenant, outlining the terms and conditions for renting a property. The process of leasing your property begins with getting your prospective tenants to fill out the Massachusetts rental application. Massachusetts lease agreements are crucial documents that detail the terms of renting a property.