Hi, I have been approved planning permission for a small front extension, and have served a party wall notice to our neighbours as we will be within 3m, I do not know if we will be excavating deeper than their footings but was advised to serve the notice I did not think the neighbours would dispute this. However they are now both wishing to appoint surveyors which I am not happy to pay for as it is a small project especially if we do not need them! I have searched the internet and read that you can serve a precautionary notice under section 6 of the act. If we then start work and find we are going deeper we would need to stop work and serve the notice and follow the procedure. So does anyone know what this precautionary notice should say or does anyone have a template please?