Updated June 2026 — prices reflect 2026 market conditions
Topographical Survey Checklist: What to Check Before You Book
Use this checklist to commission the right topographical land survey for your project.
Before Booking Checklist
| Item | What to Verify | | --- | --- | | Purpose | Define what the survey is for — planning, drainage design, landscaping, feasibility | | Specification | Select scale: 1:200 (standard), 1:100 (detailed), 1:500 (large estate) | | Deliverables format | DWG + PDF as standard; ask about Revit, point cloud, raw 3D data | | OS datum and grid | Survey ties to Ordnance Survey National Grid (standard for UK) | | Contour interval | 0.5m vs 1m intervals (0.5m = more detail) | | Turnaround time | Confirm survey start and delivery dates | | Insurance | Professional indemnity coverage adequate for your project | | Accreditation | RICS, CICES, or The Survey Association (TSA) membership |
Questions to Ask the Surveyor
| Question | Why It Matters | | --- | --- | | Have you done comparable work recently? | Similar scale and setting experience | | What equipment will you use? | Total station, GPS, laser scanner, drone | | What's included in the deliverables? | Format, detail, OS grid tie-in | | What's the timeline? | Survey start and delivery dates | | Have you handled restricted access before? | Listed buildings, occupied sites | | Are you insured and accredited? | Proof of PI insurance |
Preparation Checklist
| Item | Done? | | --- | --- | | Site address confirmed | [ ] | | Access arrangements confirmed (keys, gate codes) | [ ] | | Site cleared of obstructions where possible | [ ] | | Existing drawings provided (if available) | [ ] | | Planning boundary (red line) confirmed | [ ] | | Required scale agreed | [ ] | | Contour interval agreed | [ ] | | Deliverables format agreed | [ ] |
2025 Topographical Survey Costs
| Site Size | Cost (ex VAT) | | --- | --- | | Up to 0.25 acres | £595–£600 | | 0.25–0.5 acres | £795–£895 | | 0.5–1 acre | £995–£1,200 | | 1–3 acres | £1,500+ | | 3+ acres | POA |
Factors affecting cost: site complexity, vegetation, contour interval, turnaround.
Frequently Asked Questions
Q: Should I specify the contour interval?
Yes — 0.5m intervals show more detail than 1m. For drainage design and sloping sites, 0.5m is recommended. For broad outline planning, 1m may suffice.
Q: Do I need OS National Grid tie-in?
For most planning applications, yes. OS National Grid ensures your survey integrates with OS mapping. Confirm with your LPA.
Q: Can the surveyor access all areas of the site?
Full site access allows complete data capture. Note any restricted areas in your brief.