Building Inspector Job - Summer Greens, WC, 7441

Good afternoon

I am looking for advice as well as a building inspector to inspect a property that I am currently going to purchase, I discovered yesterday that certain structures are NOT on the current plans received from the seller,

The house was about to be lodged today and now put on hold as I am the buyer of the house but I am not currently happy with the plans given to me. Please can someone assist me with the correct way of how things need to be done going forward

Much appreciated

Mrs Abeln.