I'm in the process of buying a house and the homebuyers survey and subsequent damp report have identified a need for repairs to cracked render on the front wall, and for a bellcast to be applied on both the front and back walls. It's not a large area - it's a standard 3bed semi circa 1930s and only half of the front and back wall is rendered (the bit that sticks out where the porch is is just brick). Can anybody give me even a vague indication of how much the repairs ought to cost? I want the information so that I know how much to budget and whether to negotiate a reduction in price or an allowance from the vendors. I'm really struggling to get local builders to quote for a job that I'm not in a position to commission. If anyone can throw in an indicative cost for installation of an airbrick and replastering an internal wall that would be a bonus! Thanks!