In the case of a duplex house, disputes between neighbours can quickly arise. It would be ideal to know the family that lives next to you or to share the building with friends or relatives with whom you are on good terms. Displeasures can arise, mainly because of the noise, but the situation is preferable to living in an apartment building, where apartments on several sides surround you. When you contact the duplex builders to build a house, you must consider several aspects. You must ensure that you have the property documents in order and that the space planning corresponds to all your needs. In addition, you must consider the delimitation of the yard, as well as sound insulation and thermal insulation. Checking the property documents and the zonal regulations is essential to ensure the house complies with the laws. That also applies when you intending building a granny flat. To obtain maximum functionality, it is necessary to properly plan the interior and exterior space, the house and the garden's access, and the delimitation of private areas. Whether small or large, the project for a duplex home must be practical.