There really are a lot of decisions specific to each property that can affect the cost.
We are Architects in Wandsworth, and can impartially advise on the potential opportunities and likely costs that properties can enjoy. Wrap around and side return extensions add so much amazing space to period properties, but it is important to be informed at the outset of all your options so you can best spend and stick to your budget.
Call our office if you wanted to discuss with no obligation. 02031427672