Topographical Survey Islington: Complete Guide
Ice Labz provides topographical surveys across Islington and North London. Here is what you need to know.
What a Topographical Survey Covers in Islington
| Element | Description | | --- | --- | | Boundary features | Walls, fences, hedgerows | | Ground levels | OS datum levels across site | | Buildings | All structures on and adjacent to site | | Trees and vegetation | Species, spread, TPZ radii | | Services | Manholes, utility positions | | Roads and footpaths | Adjoining highway levels | | Drainage | Invert levels, outfall positions |
Islington Topographical Survey Costs (2025)
| Service | Cost (ex VAT) | | --- | --- | | Small residential site | £595–£900 | | Medium commercial site | £900–£1,500 | | Large or complex site | £1,500–£3,000+ |
Prices include full topographical survey, OS National Grid coordinates, and AutoCAD drawings.
Turnaround
| Site Size | Typical Turnaround | | --- | --- | | Small (under 0.5ha) | 5–7 working days | | Medium (0.5–2ha) | 7–10 working days | | Large (2ha+) | 10–15 working days |
Why Commission a Topographical Survey in Islington
Islington Council requires a topographical survey for:
- Planning applications
- Basement excavation consents
- Development feasibility studies
- S278 highway works
- Party wall surveys
Deliverables
| Format | Contents | | --- | --- | | DWG (AutoCAD) | Full layered drawing | | PDF | Scaled site plan | | CSV levels data | Spot heights, tree data | | PDF report | Survey methodology and notes |
Frequently Asked Questions
Q: Do I need a topographical survey for a small extension in Islington?
Islington Council typically requires a topographical survey for rear extensions over 3m, basement excavations, and new builds. Check with the planning department.
Q: What coordinate system do you use?
OS National Grid (EPSG:27700) with Newlyn datum. Essential for planning submissions in Islington.
Q: How do I prepare for a topographical survey?
Ensure site access is confirmed. Mark any known buried services. Clear vegetation from boundary features where possible.
Q: Can you survey around occupied buildings?
Yes — laser scanning and GPS work around occupied sites.
Q: Do you provide Level 1 topographical surveys?
Yes — specify your requirements when booking.