Be as specific as possible, and if answers are verbal rather than in writing, be sure to take notes. Always ask for a copy of the builder's warranty. Make sure that you understand every part of the document before the building or contracting begins and problems begin to occur. Many builders offer some form of written warranty that lasts for one year. Make sure the policy has not expired.
Some builders make two service calls to the home after completion for non-emergency services.
For more urgent problems, the builder should immediately send someone over. If you have done your homework, you will know what type of association the builder belongs to and if some type of arbitration is offered for settling disputes. It is a good idea to learn how a particular builder or contractor has resolved disputes in the past. Ask if a builder has ever been sued or if he has sued any of his clients. This may give you some insight in how a builder resolves problems.