Mary Fisher writes

"Anne Jackson" wrote in message

have you any idea how much it costs to get
a drain cleared, when it's blocked with tree roots?

No and the thought scares me.

My father had that done recently. They were able to do it from inside
(ie no digging to get at pipes), and followed up by putting a liner in,
which was then impregnated with some substance so that it set hard. It
cost hundreds rather than thousands, but was in any case paid for by the
house (buildings) insurance.
--
Kay