Preliminary Drainage Design

Preliminary Drainage Design for Planning

A preliminary drainage design is usually required and is recommended by Unda for outline planning applications. In some circumstances it may also meet the requirements of some detailed planning applications.

Our consultants aim to get a quotation to you within 24 hours, prices vary depending on the size of the site but start from £249 

Unda’s preliminary report is specifically written to help developers, architects and planners during the first stages of planning a development and understanding issues likely to require solutions.

Our report includes details of potential infiltration issues and provides surface water run-off volumes and flows to support initial designs and to aid discussions with the regulator. Unda’s reports are written to provide answers where possible in a clear and concise style.

Unda are specialists in providing preliminary drainage reports that advises on potential issues that may influence a sites layout which might impact on the value of the land.

Our preliminary drainage design can be provided as a standalone report or with a flood risk assessment to provide a total solution.



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Jackie Stone - Unda Flood Consultant

If you need a quote or to discuss your requirements in more detail contact Jackie Stone, one of our experienced Flood Risk Consultants.

Call 01293 214444


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Areas we cover:

Our team have produced Flood Risk Assessment reports for clients across the UK, including Berkshire, Cambridgeshire, Cheshire, Sussex, Cornwall, Elmbridge, Croydon, Devon, Hampshire, Kent, Greater London, Oxfordshire and North and South Yorkshire in England as well as Wales and Scotland.


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