I have a level 3 survey done on a house I'm interested in buying. The survey came back with an urgent advisory. Apparently the patio at the rear of the property was laid on top on another, and is now above the Damp Proof Course. It is causing a damp issue in the kitchen. Cabinets will have to be replaced.
In addition the lintel above the front door need replacing but it is a joint lintel with the neighbour's (also in bad shape).
As a background, I know it is a property previously rented, and middle budget. I was prepared to renovate the bathroom, the stairs (the tread need extending), the back fence, garden, front step, etc. The seller wanted £5k over the asking price, and said she would not accept any less. I agreed in principle, but the property report is worrying because it calls for a much larger budget I had planned. It means potentially having to remove the layers of old patio and lay a new one. The lintel has to be done in agreement with the neighbour, to replace the joint lintel.
I forgot to mention the garage has wood worm .
I feel I need to walk away because even if the seller agrees to knock £5k off the asking price this will not cover all the remedial work needed.
Am I being unreasonable?