Assessing routing and quality of supply of existing utilities services is strongly recommended in the pre- planning stages. Testing the quality of supply enables you to assess whether existing services are able to fulfil the consumption needs of your increased property or whether these need to be upgraded. Likewise an assessment of routing of existing services can be critical when planning, particularly for extensions where shared public sewers can sometimes affect scope and detail of design. Surveys can help you budget for likely costs early in the planning stage so that there are few surprises during the construction phase as well as decrease exposure to lengthy project delays.
Water Mains Upgrades
A knowledge of incoming water pressure and flow rates is critical when deciding on water and heating systems. Many systems will have minimum operational requirements that may be in excess to the current supply from the street. In these cases, if the systems are to be installed, then the incoming mains lines will require upgrading. Any work up until the property boundary must be completed by your building contractor. Thames Water will then inspect this installation and then book in their own contractors to complete the required connection on the public walkway or road.
Fees for Thames Water connection upgrade application are £240. The site will then be inspected and Thames Water will provide a quotation for the work based on the location of the main, pipe size to be installed and any special traffic management requirements. You will also need a quotation from your builder to complete the required work on your side of the boundary.
Lead times for booking in the work with Thames water are typically around 4-6 weeks. Visiting the link below will provide more detailed information.