Construction law matters can be very serious, not only because you deserve to have projects done how you want them, but also because a failure to keep the schedule can cost you money. There aren't many good reasons why contractors should run behind schedule. If you find that your project isn't being done on time, try to find out what happened and what the contractor is doing to get back on track.
Many construction contracts outline a way that you will be able to handle disputes with the contractor. One of the possibilities is arbitration, which is an alternative dispute resolution (ADR) method. This is used instead of going to court to handle the matter. If this is included in your contract, you should understand what it means.