Think over your project in detail. Before starting work, check the approved plans to make sure they fit your project exactly. Any changes to the project during construction or changes to the estimate must be documented and attached as amendments to the contract. These amendments are called “change orders” and must be signed by both you and the contractor.
Before you acknowledge the work done with the contractor, check that all contract work and any amendments have been done properly. Make sure your municipality or county's building supervision department has completed all or any necessary checks.
Obtaining a building permit:
Most home improvements require a building permit from the city building board. Your contract should state who will get the permits. Usually contractors do this because they know what permits are required. But homeowners are allowed to obtain permits on their own in most cases.
Building permits ensure that plans and specifications comply with State Building Regulations. Inspections during and after construction will ensure that the minimum applicable code requirements are met and therefore you are protected.