How Much Does It Cost to Fit/Replace an Underground Pipe/Sewer Line?

Besides the info. that follows these prices, we have a big old article on
manholes. Give it a click, by the time you’ve read that as well, you’ll probably be ready to get your spade out and do the blessed job yourself!


To have a CCTV scan of your drains will probably cost about

Any new sewer line will have to be “signed off” by a building inspector. This is a legal requirement, make sure the builder organises it and be prepared to pay for the process, it will cost about……… £125.00

Job 1
To replace all your sewer line from the manhole at the side of the house to the front gate.
We assume it’s a distance of about 30 feet and the pipes are about 3 feet down and the driveway is pavour bricks, which will all go back down again.

2 men, 2.5 days at £250 per day….£625, materials, tip, digger etc….£450

Job 2
To line the pipe instead of replacing it, is difficult to price for. However quotations are free and the lining company will also do the CCTV bit, so you could get them in on that basis and take it from there!

Job 3
To dig down to a specific point on the sewer line, effect a repair and make good will take 2 men a day and a half, so with £125 tipping and materials:

A Price Guide and Information Sheet on Replacing/Repairing a Sewer Line/Underground Pipe

You are responsible for any sewer line serving your property, right to the point where it passes under the boundary and out into the road (for instance). However, you may not be the only household using that sewer line, in this case should any repair costs be shared? Obviously it’s a tricky one, particularly if it’s your tree causing the damage, or your neighbour doesn’t even realise there’s a problem!

Sometimes a sewer runs under a property and doesn’t serve that property. Who pays if your tree damages it?

If a sewer line needs replacing there has to be a problem. Problems have causes, so make sure you remove the cause before you have any new pipes laid.

Sewers fail because of poor initial workmanship (poor joint making etc), tree root damage, land movement, some idiot digging through them, delivery lorries crushing them (if they are incorrectly laid very near the surface), that sort of thing. They don’t “wear out” (unless God forbid, they were made from pitch fibre).

If the problem isn’t obvious, the only way to determine accurately what’s wrong is by sending down a camera. These travel through the pipes sending a CCTV image back to a monitor on the surface. This cost money of course.

It may then be more economical to dig down to a single isolated “fault” and just repair that,
as opposed to replacing the whole lot.

Don’t have a new line laid until you are sure that it’s necessary. It may be possible to repair the existing one. This requires a flexible tube to be inserted which lines the original pipework and sets hard. It’s called “Cured in Pipe” lining or some such nonsense!