-Extra insulation making the interior space smaller.
-The size of an interior staircase which will be reused as part of the conversion.
-The standard sizes of door frames.
-The standard window sizes.
-The required separation of the double doors to the rear of the building into a door and a window to allow for separation of either side into rooms.
-The required number of rooms (2 bedrooms and 2 bathrooms with a living area upstairs allowing for the house to be split into 2 separate accommodations if needed).
-The thickness and minimum thickness of an interior studded wall.
-The legal requirement of having a minimum of 2 doors between a kitchen and a toilet.
The building will be equipped with 2 air-source heat pumps to provide heating and cooling to the building in an efficient way which will use the power generated by a solar panel array and wind turbines.