Yes. This covers your house on loss by natural disasters and other events. The SumExtra is already included in Everyday Plus policy at no extra costs.
Yes, provided that there’s someone who can look after it regularly and that it won’t be unoccupied beyond 60 consecutive days.
The Warehouse Home Insurance will cover the loss and pay you up to the sum insured. If rebuilding costs are lesser than the sum insured, they’ll pay for the maximum costs in replacing your house and items.