Explain any later phase of the project, such as paving, planting or another outside room. The fence installer can discuss the intended route and access before recommending work. Obtain applicable permission for shared boundaries or managed property, and identify building tasks that another contractor must complete before the fence work can be finished.
At handover, ask for the fence changes and completed assessment to be described clearly. Keep the record with the earlier installation documents and tell future contractors where fence-related work has been done. A finished outdoor project should not leave a temporary connection or an inaccessible section undocumented.