I froze a cake straight from the oven just to see what people were talking about. I always read that it just keeps it SOOO moist. When I thawed it (in the wrapping) the outside of the cakes were gummy and disgusting. Easy to correct, just trimmed both sides.
A loft extension can cost 30,000 to 85,000 and may add at least 25,000 to 50,000 to the value of the house. Sometimes it could add a lot more providing it creates sleeping space with an en-suite bathroom.
As a rule of thumb you can add 50% extra to the build cost of a single storey extension. So, Â£24,000 +50% = Â£36,000. + Add on 10-15% for professional fees (architect, planning application, building regs, structural engineer).+ VAT.o, for your 4 x 5m extension, the build cost would be roughly Â£24,000. + Add on 10-15% for professional fees (architect, planning application, building regs, structural engineer). + VAT. Single storey extension = Â£32,000.