The success of construction depends on clearly defined expectations and timelines. Errors or delays have a negative impact on both owners and contractors, resulting in additional costs for owners, as they cannot use the property on the date set for the intended purpose and incur additional costs for the contractors` work and equipment. 5.6. The Contractor is responsible for the removal of all building materials and debris from the land, from the original date to the date of issuance of a Certificate of Occupancy to the Owner. During the authorization period, it is best to start looking for the contractor. In most cases, word of mouth or referral from people in the community leads someone to the best contractor in the area.