Client guide
Commissioning a survey: what to look for
A survey is the foundation of your design, so mistakes are costly to fix later. The Survey Association (TSA) publishes free client guides to help clients commission surveys. These are the key points.
- 1
A clear specification
Define the purpose of the survey, the extent of the site and the level of detail you need. A good specification is the single biggest factor in getting a useful survey.
- 2
Stated accuracy
Ask what accuracy the survey will achieve and how it will be checked. Accuracy should suit the purpose, and it should be written down.
- 3
Coordinate system and datum
Make sure the survey is tied to a known system, usually OS National Grid and Ordnance Datum Newlyn, so it fits with other data and future work.
- 4
Deliverables agreed up front
Confirm file formats, layer standards, drawing scales and whether raw data such as point clouds is included before work starts.
- 5
Quality assurance
Look for documented checks, independent check measurements and a survey report explaining methods, control and any limitations.
- 6
Competent, insured surveyors
Check experience in the type of survey you need, professional indemnity insurance and safe working practices on site.
- 7
Compare like with like
The cheapest quote often leaves things out. Compare specifications, accuracy and deliverables, not just price.
Get in touch
Let's talk about your next project
Send us a site plan or a short description of what you need. We'll recommend the right survey and come back with a clear, itemised quote.