We deliver accurate measured building surveys throughout the southwest using the latest in real-time survey technology. Producing all floorplans, building sections and elevations on-site we don’t leave the room before our measurements are within the industry defined tolerances for architectural surveys ensuring that you get the level of detail you require for your project.    Read more.….


Working closely with architects, developers and domestic customers Datumline Surveys carry out highly accurate surveys of land using digital survey equipment, recording data in real-time to ensure that all details are checked and correct before we leave site. Read more …..

Conveyancing Plans

Datumline surveys work alongside solicitors to provide accurate land registry compliant plans for conveyancing purposes. Our services cover both land and building surveys. All conveyancing surveys are carried out using the latest in real-time survey technology. Producing all conveyancing plans on-site which are checked and correct before we leave site. Read mor

Our work

Our Service

Where We Are

Datumline Surveys is a small independent survey business based on the Devon and Cornwall border between Bude and Bideford making them ideally located to cover both Counties, in particular North Devon and Cornwall.

Who We Are

Mark Trewin has over 25 years experience within the property sector developing his skills within the field of measured surveys and CAD draftsmanship. Datumline Surveys was formed in 2011 and Mark carries out all of the survey work in person and believes strongly in offering an efficient and personal service whilst catering for small to medium sized developments.

What We Do

Datumline Surveys concentrate on the small to medium sized developments and carry out accurate measured surveys of buildings and land. They also provide a CAD drafting service for clients requiring plans drawn.

  • 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