Topographical Survey Barnet: Fixed Fee Quotes
The London Borough of Barnet covers postcodes EN4, EN5, NW2, NW4, NW7, NW9, NW11, N2, N3, N11, N12, N20, HA8. It is the second-largest London borough by area, with a mix of suburban residential, Green Belt land (around 30% of the borough), and town centres including Barnet, Edgware, Hendon, Finchley, and High Barnet.
Survey Standards
All icelabz topographical surveys follow the RICS Measured Surveys of Land, Buildings and Utilities guidance note (3rd edition), which replaced simple map-scale tolerances with scale-independent accuracy bands. Surveys are referenced to OSGB36 / British National Grid (EPSG:27700) with heights to Ordnance Datum Newlyn (ODN). Survey control is established via GPS-tied stations, with the control record retained for downstream designers and contractors.
For urban development sites, surveys are specified to achieve sub-decimetre plan and height accuracy — tighter than ordinary Ordnance Survey 1:1250 urban mapping (relative accuracy approximately ±0.5 m RMSE between well-defined points up to 60 m apart). Rural or lower-intensity sites may use looser tolerance bands per the RICS table, balancing cost, site access, and intended use.
Typical Costs
£495 to £1,500 for residential; £1,200 to £2,500+ for commercial (ex VAT). Costs scale with plot size, vegetation density, access constraints, required accuracy band, and the deliverable set (basic 2D DWG vs 3D + BIM-ready IFC).
Deliverables
Standard deliverables for a topographical survey include:
- 2D AutoCAD drawing (DWG) with layered plan detail and symbology
- 3D DWG with levels on relevant features, spot levels, and contours
- PDF plots at agreed scales (typically 1:200 or 1:500)
- Metadata file with accuracy band, methods, and control description
- Signed accuracy statement per RICS Measured Surveys standard
- Optional IFC or Revit-ready BIM output where commissioned
How to Commission
To commission a topographical survey, prepare a brief covering the site address, postcode, plot area, planning application reference (if any), and the specific deliverables required. Submit the brief via the icelabz quote form to receive a fixed-fee quote within 24 hours. Site work typically commences within 5-10 working days of instruction.
References
- RICS Measured Surveys of Land, Buildings and Utilities, 3rd edition: https://www.rics.org/uk/upholding-professional-standards/sector-standards/land/measured-surveys/measured-surveys-of-land-buildings-and-utilities-3rd-edition.pdf
- OSGB36 / British National Grid (EPSG:27700): https://epsg.io/27700