Rest of the house is fine. There is a down pipe on the porch but that only serves to remove rain water from the pitch on the porch itself. The down pipes for the main pitch are on the other two sides. The front garden and driveway don’t show any signs of sinking and the established tree nearby hasn’t cause any bumps in the parking area let alone breached the tarmac.
I know the house and porch should be on the same foundation. However, what should have been done and what was done might be two different things.
We found out after we moved in, that the doors are a bit narrower than normal. Apparently, it was to stop the contractors stealing them. If they were watching the pennies that carefully, I can easily see the single storey porch getting a less Su stantial foundation than the main house.
Getting a camera down the drains might be useful though.