Listed & Historic Buildings








By using the latest in mobile CAD software and digital survey technology Datumline surveys are able to measure and record an incredible amount of detail on building elevations.

Depending on our brief we can draw window frames, key stonework and architectural features all in real-time.

This is especially useful when providing drawings of listed and historic buildings as a way of providing  accurate records and for renovation work and property alterations. All elevation surveys and internal floorplans are based on the same on-site datum which means all internal levels and change of levels are accurately recorded in relationship to the elevations and surrounding topography.



  • About us

    With over 25 years experience in the property industry Mark Trewin formed Datumline Surveys with the sole intention of providing a very personal service to both professional and domestic customers alike. Specialising in individual properties and smaller sites Mark is able to work directly with his clients to provide a very efficient reliable service. These services include