How many houses can be built on an acre of land?
Similarly, how many houses could you build on an acre?
Under current density standards, it estimates that a total of 79,314 new houses could be built on residential zoned land in the three areas. But if densities were increased to 13 units per acre, the figure would rise to 91,225 - almost 12,000 additional units.
Subsequently, one may also ask, what percentage of land can you build on?
A 0.4 FSR indicate that you can legally build up to 40% of square footage of your land footprint. If you have a 100 foot x 100 foot lot, your total land area is 10000 square feet, and your home can be 4000 square feet.
As to the number of houses per acre, this site says new housing was being put up at rate of 16 per acre in 2005 in Britain. There are about two acres per hectare. So taking the above £1.6m, that means £800,000 per acre. And that at 16 houses per acre means about £50,000 land cost per house.