Plan for the possibility of moving out.
Do not assume the ground floor will remain suitable for occupation while work takes place above it. Ask the builder to explain when the roof, structure or essential services will be affected and how household safety will be managed.
The answer depends on the construction method, staging and the individual home. This website cannot determine whether occupation is safe. The builder and relevant professionals need to assess and agree the site arrangements.
Discuss the practicalities before the contract.
Ask whether bedrooms, a bathroom and the kitchen would remain accessible, how work areas would be separated and when power, water or weather protection might be affected. Include children, pets, working from home and any mobility needs in the conversation.
Get clear instructions on access, deliveries, parking and out of hours arrangements. Agree whom to contact if the conditions on site change. Do not enter restricted work areas simply because the property is your home.
Make accommodation part of the budget.
Allow for accommodation, moving, storage and any change to your daily travel. Discuss the programme and what happens if the move back date changes, rather than assuming the earliest date is guaranteed.
Keep essential belongings accessible and ask which areas need clearing before work. The builder should explain the scope of protection for remaining fixtures, furniture and outdoor areas.
Keep the agreed plan with the project records.
Document accommodation and access assumptions alongside the drawings and scope. Ask how they affect the quote and schedule. If the construction method or scope changes, revisit the household arrangements too.
Use the budget organiser to add your own temporary accommodation allowance to the rest of your project figures.