This is a kit for a 5 bedroom house of 204 Square Metres floor area costing £49,967. House Kit 04. This is a kit for a 5 bedroom house of 231 Square Metres floor area costing £46,910. House Kit 07. This is a kit for a 3 bedroom house of 136 Square Metres floor area costing £41,095.ouse Kit 11. This is a kit for a 2 bedroom house of 70 Square Metres floor area costing £26,290. House Kit 14. This is a kit for a 4 bedroom house of 276 Square Metres floor area costing £103,475.