Size the request around shifts and work phases
Separate the expected daily crew from the maximum number arriving together. Include subcontractors, overlapping shifts and periods when permanent facilities will be disconnected. A short fit-out and a ground-up build can need different quantities and service arrangements even at the same address.
Use the project schedule to explain when demand will change. Ask for a review before extra trades arrive rather than waiting for facilities to become overused. The site’s responsible party must also check applicable workplace requirements.
Choose a location that survives the next delivery
Keep restrooms out of crane set-down areas, material stacks and reversing paths. A clear location on the first day can become inaccessible after fencing or scaffolding goes up. Identify a primary position and discuss alternatives with the provider before moving equipment.
Share the delivery entrance, gate arrangements and on-site contact privately with the rental team. Do not put security codes into a public web form description or a link.
Make cleaning visits part of site access
Agree who will open the gate and keep the service route clear. Tell the provider about working hours or access restrictions that could affect a visit. Handwashing needs its own water, soap and towel plan; adding a cabin does not automatically add a sink.
Keep the finish date explicit
Before the last trades leave, request collection and confirm when the provider can enter. Leaving the site or reaching the date on an initial estimate should not be assumed to trigger pickup. Check the agreed terms for extensions, changes and billing.