First of all thank you for replying, your helpd is much appreciated.
The warranty is provided by BuildZone, which I gather is not very popular. Is there a way I can convince the builder to switch to NHBC? Is this possible at all, and if not, what additional action can I take to protect myself and avoid problems further down the line.
Thanks for clarifying on the brickwork. Regarding the grass, we are passing this on to our solicitor to raise the concern with the builder. I can understand the challenges posed by the weather but I would expect the surface to be flat as a minimum.