Cost to change surface water drainage system

Roughly how much does it cost to create a soakaway for surface water, including any necessary work to change the existing drainage from channelling it into the main drain?

Asked by Pete on 8th Mar 2023
Expert Trade Answers
"If you are wanting to dis charge surface water into the foul system.

You will need to obtain permission from the local water authority for you area. I.e Thames Water.

They will ask that you have exhausted all other systems. Like soakaways. To install a soakaway you will need to carryout out roof calculations and perc test on the ground to establish the rate at which water could soakaway in water and how big the soakaway needs to be.

I would advise consulting with a specialist drainage company for further advice."
Answered on 16th Oct 2023 - Member since Jul 2023 - report
"If your changing to a soak away system it must be 5 MTRS clear from any structure.It depends on the amount of work required.
The cost would be around £4 to £5000 ."
Answered on 8th Mar 2023 - Member since Jun 2018 - report
"the very basics for a crate system £2500 plus making good the old site it has to be about 5m from the property plus skips approx."
Answered on 8th Mar 2023 - Member since Oct 2020 - report
"All depends on the amount of work that needs to be carried out all soakaway systems need to be minimum 5 m away from any structural house/building. Your be looking around 3000-4000 for a new system to be installed"
Answered on 9th Mar 2023 - Member since Jan 2023 - report
"at middle and sons groundworks we normally charge £1750 fr the labour for a 1m3 soak away and the materials"
Answered on 20th Mar 2023 - Member since Mar 2023 - report
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