That equates to about $300 to $600 a year. You will also have to pay a service call fee of between $75 and $125 each time a technician comes to your home. Residential service contracts are insurance policies that cover the repair or renewal of major systems in homes. These systems include heating, electricity and plumbing. The buyer or seller of a home can purchase a residential service contract.3 min read What is a residential service contract (home guarantee)? A residential service contract (CSR) is a service policy that offers the repair or replacement of a home`s most important mechanical systems and equipment. A seller can protect their home with a policy while their home is listed, and a contract can also be offered with the sale of the home to the buyer. The term “housing service contract” appears to be widely used in Texas and is defined as a service where a company commits to repairing or replacing large appliances or systems in a residential property for a fee and for a period of time. Texas real estate contracts also have a clause where home sellers can specify how much they will pay for the buyer`s purchase of a home guarantee agreement if they agree to pay all or part of the contract as part of the negotiation process. .