How much does drainage cost? Your price guide to new drains

Drains being installed
(Image credit: Getty Images)

Wondering what your drainage costs are going to come in at? While choosing drainage systems might not be quite as exciting as picking out a sparkly new kitchen, it is an important part nonetheless of many self build, renovation, conversion and even extension projects. 

Of course much of this will depend on the type of drainage system you end up opting for. 

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Water and sewerage£2,112.00
VAT (payable only on building water supply and recoverable)£15.85
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Excavate 88m drains (max 900mm depth): groundworker and labourer for 3 days @ £360 per day£1,080
Excavate 5 soakaways: groundworker and labourer for half a day @ £360 per day£180
Load lorries: groundworker and labourer for one-and-a-half days @ £360 per day£540
Digger hire for 5 days @ £200 per day£1,000.00
VAT (not recoverable) @ 20%£200.00
3 loads of muck away @ £275 each£825
VAT (not recoverable) @ 20%£165.00
30 3m x 110mm pipes @ £10.79 each£323.70 + VAT
9 tons Type 1 hardcore for soakaways @ £13 per ton£117.00
VAT @ 20%£23.40
5 gulleys @ £38.29 each£191.45
VAT @ 20%£38.29
3 rest bends for SVP (soil and vent pipe) @ £12.36 each£37.08
VAT @ 20%£7.42
2 branches @ £18.23 each£36.46
VAT @ 20%£7.29
24 110mm drainage collars @ £4.88 each£117.12
VAT @ 20%£23.42
24 110mm drainage bends @ £14.50 each£348.00
VAT @ 20%£69.60
5 manhole inspection chambers @ £147.27 each£736.35
VAT @ 20%£147.27
5 manhole covers @ £48.79 each£243.95
VAT @ 20%£48.79
Groundworker, semi-skilled labourer and labourer for 8 days @ £490 per day£3,920
David Snell

David is one of the UK's leading self build and plotfinding experts, and a serial self builder who has been building homes for 50 years. The author of Building Your Own Home, David spent decades as a speaker and expert at self build exhibitions such as the Homebuilding & Renovating Show. He has recently finished his fourteenth self build project.