From which point do you measure the height of a log cabin? The height can be of particular importance if for example you are trying to comply with Permitted Development rules. So where do you measure from?

Permitted Development for Householders (Technical Guidance) states that references to height are measured from ground level. Ground level is the surface of the ground immediately adjacent to the building in question. Where ground level is not uniform (eg if the ground is sloping), then the ground level is the highest part of the surface of the ground next to the building. (This will be the level of the natural ground and would not include any addition laid on top of the natural ground such as a patio.)

In our example (shown in the pictures) the log cabin would comply with the 2.5m maximum height limit and could therefore be positioned within two metres of a boundary. Even though its maximum height measured from ground level at the front is 4510mm (C) and the actual log cabin itself measures 3002mm (B), the correct height of the log cabin is  2489mm (A) measured from the highest ground adjacent to the cabin.