Handover construction site to the client - Designing Buildings Wiki - Share your construction industry knowledge. The handover of the site to the client takes place once the contract administrator has confirmed that the works defined in the contract are complete. However, it should be planned well in advance, and any special requirements included in appointment documents and contracts. Request Letter Sample – How to write a request letter. A request letter is a letter that is asking for something which could be a favor, permission, information or service. They are also used by job seekers when they want to request an interview with the employer. Generally, a form of request is found in other types of letters, like an approval letter which is requesting for the go-ahead or ...