Tree Surveys


Protecting our native trees is an essential consideration when planning any development from garden design and landscape architecture to property extensions and large scale development. Equally as important is the health of these trees and their possible safety threat to your project. We offer a complete tree survey service from accurately plotting them on our drawings and recording essential data to providing root protection zone information and tree condition reports.

Often as part of a topographical survey or an architectural survey the information we provide means that all the data regarding relevant trees are on one drawing along with all other surveyed information. We can also work from your existing digital survey plans and add the tree survey and reports into the drawings you have.

All measured work is carried out by ourselves and would normally include

  • trunk diameter
  • canopy spread
  • crown height
  • height of lowest branch

With this information we will calculate root protections zones in accordance with BS5837 which will be added to our survey drawings. This information is passed to a fully qualified Arborist who carries out our tree species and condition reports.

Please call or email us to discuss your requirements



  • 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