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If you’re planning a new development or extending an existing property over or within 3 metres of a public sewer or lateral drain we’ll need to know.
Flowchart - Build over drainage process
We won’t allow building over or near water mains, sewer rising mains or sewers on a new development or redevelopment site.
Have a look at our Build over guidance notes which sets out our consent criteria.
If you meet the consent criteria please complete our Declaration of works form below or download the pdf version here.
If you’re unable to meet the consent criteria please complete our Enquiry to build over/close to public drainage form below or download the pdf version.
Dial before you dig
Another reason there's leaks and bursts on our network is because of third-party damage. If you're planning to dig, call us first and we'll let you know if there's a water main in the area.
Small build sewer diversion process
If you're a homeowner planning a small building project and your ‘build over application’ is unsuccessful, you may be eligible for our Small Build Sewer Diversion Process.
Our guides below provide further details on this process.