exists and is an alternate of. Merge this question into. Split and merge into it. Answer by Fwmh. Confidence votes 79.8K. Adult Humans have 12 pairs of ribs, making 24 ribs in total. ---------------------------------. Some believe that females have 24 ribs and men have less. That belief is usually based on the Biblical account of Adam and Eve.
So, 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.ou may have heard that the rule of thumb is Â£1,000 per m2. However, this figure has been bandied about for rather a long time now! From experience, Â£1,200 per m2 is a now a more realistic estimate for a house extension cost in 2015 and reflects price increases over the last few years.
The price per square metre also depends on the size of the property. There are basic costs that don't increase too much with size and hence the cost per square metre will decrease as the floor area increases. The price for a home extension depends on several factors. 1  Where you are in the country.s a rough idea you can typically say that it will cost at least Â£1000 per m 2 or 93 per ft 2 including basic plumbing and electrician work. This price is per unit area of internal floor space and so a 5x4m single floor extension will have a total floor area of 20m 2 and a double storey will have 40m 2.