If you are planning to carry out construction work on the interior or exterior of your home, you should first take professional advice. My home is located on quite a steep hill and I decided that I would like to build an extension. Not only would this involve digging a new foundation, it would also involve backfilling some areas of land so the new extension would be properly supported. I decided to call my friend who works as a contractor for a construction company. He offered me lots of great advice and thanks to him the job was a complete success.