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1. Sender's Details: Complete contact information of the complainant, including name, address, and contact numbers

2. Recipient's Details: Complete details of the contractor/construction company, including business name, address, and relevant license numbers

3. Date: Current date of the letter

4. Subject Line: Clear indication that this is a formal complaint regarding construction delays

5. Project Details: Specific information about the construction project, including project name, location, and contract reference number

6. Contract Reference: Details of the original agreement, including date of signing and agreed completion timeline

7. Delay Description: Detailed explanation of the delays experienced, including specific dates and instances

8. Impact Statement: Description of how the delay has affected the complainant, including financial and other consequences

9. Previous Communications: Reference to any previous attempts to resolve the issue

10. Demand for Resolution: Clear statement of what action is required from the contractor, including specific timeframes

11. Closing: Professional closing with signature and name of the complainant

1. Timeline of Events: Chronological list of relevant dates, communications, and events related to the delay

2. Photographic Evidence: Photos showing the current state of construction and any issues

3. Communication Records: Copies of previous correspondence, notices, and warnings sent to the contractor

4. Contract Excerpts: Relevant sections from the original contract highlighting completion dates and delay penalties

5. Cost Documentation: Receipts, invoices, or estimates showing financial impact of the delay