Good evening everyone,
I've just got hold of a drain map for the land I am considering purchasing.
It shows there's a pipe running almost straight through the middle of the would be building.
It's an end-of-terrace plot of land where the owners of the existing house is splitting the title and selling it after having obtained planning permission.
We plan to explore the option of modifying the permission and including a basement and perhaps taking the ground floor out as close to the perimeter as possible . At the moment, there is a garage on top of where the drain is, which is to be demolished and replaced with the house.
Based on this drain map, what problems and costs are now likely to arise as a result.
For example, does that rule out a basement entirely, or mean we couldn't have one for the entire house footprint?
Would the drain need to be re-routed and if so, what kind of figures are we looking at?
Regardless of what we build, are we going to need to get some sort of clearances and permissions from Thames Water and what kind of costs is that likely to cause?
I'm attaching a picture of the block plan from the planning application to show the current planing permission and then the drain map.
Ball park figures or anecdotal examples will be fine if more precise estimates are no possible, or at least pointers for where I need to be looking for further details.