As part of the house build project management process it is important that you understand your land and that involves carrying out:
1. a soil survey and
2. a topographical survey
Before you buy a plot, in most cases it is advisable to have a soil survey, to determine what you are going to be building on as this can help you assess build cost:
- It helps identify what type of foundations you will require – the amount (and cost) of infill, is dependant on what you are sitting your house on and can vary greatly. If you are on solid ground, you’ll be spending less on your foundations.
- It can help identify what type of subsoil you have and any contamination issues (this may be planning requirement, depending on perceived risks of contamination)
- This report is required for the engineer to design your foundations
If you don’t do this before you buy the plot, it is going to be necessary at the start of the project, to aid with designing the house.
A topographical survey is highly recommended to plot out the contours of the site, the way the land lies, key markers and boundaries. This will be used by house builders, architects and engineers when designing your house.