A work colleague has his Victorian terraced house up for sale and there is considerable interest. No surveys have been done yet. However he has a concern. There are two attics in the house - one at the front, one at the back. The one at the back has a firewall at both sides - so no access to the neighbour's attic on either side. The one at the front has no firewall between it and the neigbhour on one side. A water tank belonging to him is sitting bang on the dividing joist and a very delicate Victorian piping system is dependent on that tank staying put! Would the house sale go through without a new firewall being put in place does anyone know?