TransTech - Environmental Consultants - Flood Risk Assessment Scotland
TransTech - Environmental Consultants - Flood Risk Assessment Scotland

Flood Risk Assessment Surveys for Planning in Argyll, Highland, Lanarkshire and Renfrewshire

The assessment of flood risk is a local planning authority condition when building in or near designated flood risk zones in Scotland. The Scottish Environment Protection Agency (SEPA) are a statutory consultee in the planning process and although they may not object to a development proposal the Local Authority may still require a flood risk assessment to be carried out.


Predicted 1 in 200 year flood contours plus the predicted effects of climate change on flood water levels can be be overlain onto aerial imagery (as shown above) to enable visualisation of any area(s) at risk of flooding.


We carry out flood risk assessment work for any type or scale of existing or proposed development. Our experience spans large developments involving a number of residential dwellings or commercial buildings through to care homes, schools, social developments and single dwelling house plots.


Since 2006 TransTech has provided dozens of flood risk assessments to address planning conditions. These appraisals include sites potentially affected by high flows in rivers, streams, burns and/or elevated levels in freshwater waterbodies and/or coastal flooding from the sea.


During this time the methods for predicting extreme coastal and fluvial flood levels have changed. As a well established flood risk assessment consultancy we are permanently up to date on current flood risk estimation methodologies and as such can provide an accurate prediction for flooding at your site to comply with current SEPA/Planning Authority criteria. 


We are proud of our:

  • Comprehensive experience and knowledge
  • Competitive rates
  • Dedicated customer support 
  • Timely delivery – usually within 4 weeks of receiving all the required information


Our flood risk assessment consultancy work meets current planning policy (i.e. Scottish Planning Policy 2014), Local Authority Policies, Scottish Environment Protection Agency criteria and insurance company specifications.


TransTech covers all aspects of flood risk assessment including site survey, liaison with SEPA and the Local Planning Authority's Flood Risk Managemet Team, determination of historical flooding, flood water hydraulic modelling where required and report production for submission to regulators.



A typical in-depth flood risk assessment to comply with planning and regulator criteria involves the assessment of flood levels adjacent to the site. For the subject site, depending on location, these can be watercourse, freshwater loch, lochan, pond or sea levels.


A flood risk assessment can therefore involve watercourse hydrology, determination of catchment size, flow conveyance through watercourse channels, bridges and culverts, flood defence structures, escape routes and evacuation, flood mitigation measures, local drainage capacity, historic and predicted flood level analysis, the predicted effects of climate change, etc., all of which require time input and technical expertise.


This can range from several hundred pounds to several thousand pounds depending on site-specific risks, the size and the complexity of the development.




Where possible the following information will be helpful in preparing a quote:

  1. National grid reference, address or postcode of the site
  2. A site and/or location plan
  3. If available, an architect’s drawing of the proposed development
  4. Copies of letters sent by the planning authority's Flood Risk Officer and/or SEPA
  5. Topographical survey details (if a survey has been carried out at the site)

For more information on our flood risk assessment consultancy services please call the office on 01631 720699, or if you would like to request a fee quote for your project contact us by email at


Please note that our flood risk assessment services are limited to Scotland and we cover all of mainland Scotland from Argyll, Lochaber, Ardnamurchan and the rest of Highland down to Dumfries and Galloway and the Scottish Borders plus all of the Scottish islands, from the small inhabited islands through to the larger islands such as, but by no means limited to, Arran, Bute, the Cumbraes, Gigha, Islay, Jura, Mull, Skye and in the Outer Hebrides such as Barra, Benbecula, Harris, Lewis, Scalpay and the Uists. As well as the Western Isles we also do flood risk assessments for the Shetland and Orkney Isles. We have also carried out flood risk assessments for small uninhabited Scottish islands to achieve planning consent for development proposals.


An important focus of our work has always been the Central Belt of Scotland (i.e. Ayrshire, Inverclyde, Renfrewshire, Lanarkshire, Falkirk, Fife, Lothian and Mid-Lothian) and the cities of Aberdeen, Dundee, Edinburgh, Glasgow, Inverness, Perth and Stirling.

Click here to download our flood risk assessment leaflet
Adobe Acrobat document [164.7 KB]

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