# Ground & site investigation (geotechnical): what it costs and how to get quotes

Source: https://worklanded.com/find/site-investigation (read 2026-11-13)

Ground & site investigation (geotechnical) typically costs £950 to £6,000 (per desk study or ground investigation), according to Arbtech contaminated land survey page, read September 2026.

## What happens to an enquiry sent here

| Fact | Value |
| --- | --- |
| Typical cost | £950 to £6,000 |
| What that price is for | per desk study or ground investigation |
| What you pay us | Nothing. Sending an enquiry is free and you agree prices with the firm. |
| Who gets your details | Up to three ground investigation firms, chosen by Worklanded. They contact you directly. |
| You are told | Each firm's name, by email, as your details go to it, with a link that stops any more firms receiving them. |
| What firms pay us | £23 per enquiry in the UK, a fixed price published on our lead price index. Never a share of what you pay them. |
| What a firm sees before it pays | The job and the area, without your name or contact details. |
| Where it is offered | the UK |

Source: [Arbtech contaminated land survey page](https://arbtech.co.uk/contaminated-land-survey/), read September 2026.

## What a firm will ask you

- What is the project? (Self-build or single new house / Extension or basement to an existing property / Multi-plot or development site / Subsidence or structural concern / Something else)
- What do you need? (Phase 1 desk study only / Phase 2 intrusive investigation / Both phases / Not sure, I've been asked for a "ground investigation")
- Any known ground concerns? (Clay soil and/or trees near the build / Made ground, fill or previous structures / Possible contamination (former industrial or fuel use) / None known, investigation requested anyway)
- Who has asked for the investigation? (Structural engineer or architect / Building control / Warranty provider (e.g. NHBC) / Planning condition (contaminated land) / No one yet, doing it early)
- When do you need the report? (As soon as possible / Within 1–3 months / In 3+ months / Just researching fees)

## What happens after you send it

1. Your enquiry is checked for spam and its contact details are checked so a firm can reach you.
2. Worklanded chooses up to three ground investigation firms that cover the area. A firm sees the job and the area before it decides to take it.
3. As your details go to each firm, we email you its name, with a link that stops any more firms receiving them.
4. The firms contact you directly. You agree the price and the work with them; Worklanded takes no part of that.

Send an enquiry: https://worklanded.com/find/site-investigation#get-quotes (free). An AI agent can send one with the submit_enquiry tool at https://worklanded.com/mcp; the person confirms it by email before it goes anywhere.