Choosing an archaeologist and working with the county officer
Archaeology rarely stops a scheme. It delays schemes that treat it as a condition to be discharged later rather than a programme item to be booked early.
On most sites the county archaeologist decides what happens, and the council writes it down. The adviser holds the Historic Environment Record, reads the planning application against it, and recommends either no requirement, a desk-based assessment, a pre-determination evaluation, or a condition requiring investigation before work starts.
Understanding that relationship is the difference between a smooth condition discharge and a trench full of Roman ditch discovered by a groundworker in week three.
The advisory role of the county archaeologist
Local planning authorities in England mostly buy archaeological advice from a county-level service or a shared arrangement rather than employing an in-house archaeologist. That adviser maintains the Historic Environment Record, a database of known sites, findspots, historic buildings and previous investigations for the area.
They do three things that matter to you. They screen applications against the record. They set the brief, meaning the scope of work the council will require. And they approve the written scheme of investigation and sign off the results.
None of that is a statutory consultee role in the way Historic England's involvement with scheduled monuments is. It is advice the council follows almost invariably, which amounts to the same thing.
Talk to them before you apply. An adviser who has seen the site boundary and the proposed foundation design will often tell you exactly what will be required, and that conversation costs nothing.
Where a scheduled monument is on or beside the site, the position changes. Works affecting a scheduled monument need scheduled monument consent from the Secretary of State under the 1979 Act, which is a separate application on a separate timetable, and planning permission does not authorise them.
Registered organisations and what registration covers
The Chartered Institute for Archaeologists operates a registered organisation scheme, which assesses a firm's quality systems, adherence to published standards and complaints handling. It also accredits individuals at practitioner, associate and member grades.
The two are not interchangeable. A registered organisation may put an unaccredited field officer on your site, and an accredited individual may work for an unregistered firm. Ask three questions when appointing:
- Is the organisation registered, and is the registration current.
- Who is the named project manager, and what is their accreditation grade.
- Who writes the report, and have they written for this archaeological adviser before.
That last question is more useful than it sounds. Advisers differ in what they expect from a report, and a contractor who works in the county regularly will produce something that is accepted first time.
Getting the written scheme of investigation agreed
Fieldwork happens under a written scheme of investigation, agreed with the adviser in advance. It sets out the aims, the methodology, the standards being followed, the staffing, the timetable, the arrangements for reporting, and what happens to the archive.
The sequence is: the adviser issues a brief, the contractor writes the scheme to meet it, the adviser comments, the scheme is agreed, and only then does anyone dig.
Two failures recur. Fieldwork carried out before the scheme is agreed, which the adviser may refuse to accept, meaning it is done again. And a scheme that describes the fieldwork in detail while saying almost nothing about post-excavation analysis, reporting and archive, which leaves the cost of the tail undefined until it arrives.
Where the work is required by condition, the scheme and the condition need to line up. Read the condition wording carefully: some require the scheme to be approved before development begins, and some require the whole programme of investigation to be completed first, which is a very different programme item.
Fees follow the same logic. Ask for a proposal broken into evaluation, mitigation, post-excavation and archive, with the assumptions stated for each. A contractor who prices the trenching alone is not being evasive: they cannot know what the mitigation will cost until the trenches are open. What they can do is tell you the rate and the assumptions, so the range is visible before you commit.
Desk-based work before any fieldwork
An archaeological desk-based assessment is the first step and the one with the best return. It draws on the Historic Environment Record, historic mapping, aerial photography, geological and geotechnical data, and any previous investigations nearby, and it produces a statement of the site's archaeological potential.
Two practical points. Historic Environment Record searches are chargeable in many counties and take time to return, so request the search early. And feed the geotechnical work in: borehole and trial pit logs from the ground investigation tell an archaeologist about depth of made ground and truncation, which often reduces the assessed potential considerably.
Where potential is confirmed, an archaeological field evaluation follows, typically geophysical survey then trial trenching to sample a percentage of the site. Councils usually expect a suitably qualified author for this work and professional review is strongly advised.
Programming evaluation against the build
National policy expects the significance of any heritage asset with archaeological interest to be understood before the application is determined, which means pre-determination evaluation on sites where potential is real. Developers often resist this and ask for everything to go under a condition instead.
Sometimes that works. Where it fails, it fails expensively.
Illustrative example: a 60-unit site on the edge of a market town, with cropmarks recorded in the Historic Environment Record. Evaluation deferred to a condition. Trenching after permission finds a small Iron Age settlement in the location of the attenuation basin, and the mitigation excavation takes eleven weeks in the middle of the enabling works programme. Evaluating before submission would have moved the basin on a drawing.
Practical programming rules:
- Evaluate before determination where the record shows potential, so the layout can respond.
- Trench in a dry season where the ground allows, since winter working slows everything.
- Sequence evaluation with the ground investigation, sharing plant mobilisation where safe.
- Leave time between evaluation and the mitigation scheme for the adviser to comment.
- Treat any mitigation excavation as a fixed programme item, not a float.
Who owns the archive at the end
The material and the paper record have to go somewhere. Ownership of finds generally rests with the landowner, subject to the separate rules for treasure, and museums normally require title to be transferred before they will accept a deposit.
Museum capacity is a real constraint, and some will not take new archives at all. The written scheme should name the intended repository and confirm it will accept the material, along with the deposition fee. The digital record is registered through the national index of archaeological investigations, and reports are usually made publicly available.
Settle all of that in the appointment. An archive with nowhere to go is a condition that cannot be discharged, and it surfaces long after the site is sold.
Where you want a qualified specialist to review a draft before submission, PlanScope's professional directory is the route to a reviewer, and the report library shows what else a site with heritage constraints usually needs.
PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. For specialist technical reports, qualified professional input may be required. This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it.
Frequently asked questions
Who decides whether my site needs archaeological work?
The local planning authority, advised by its archaeological adviser, who is usually employed by the county council or a shared service and holds the Historic Environment Record. Historic England advises separately where a scheduled monument is affected. The adviser's written comments normally become the council's requirement, so engage with them early.
What qualifications should an archaeological contractor have?
Look for registration with the Chartered Institute for Archaeologists at organisation level, and for accredited individuals leading the work. Registration covers quality systems, standards and a complaints route. Ask who will write the report as well as who will run the fieldwork, because those are often different people.
What is a written scheme of investigation?
The document that sets out what fieldwork will be done, how, by whom, to what standards, and what happens to the results and the archive afterwards. It has to be agreed with the archaeological adviser before work starts, usually to discharge a condition, and fieldwork carried out without an agreed scheme may have to be repeated.
Can archaeology stop a development?
Rarely, outside scheduled monuments and remains of the highest significance. Most sites are dealt with by recording rather than preservation in place. The realistic risks are cost and programme, both of which grow when archaeology is discovered late rather than investigated early.
Who owns the finds?
Ownership of archaeological finds generally rests with the landowner, subject to the separate statutory regime for treasure. In practice landowners are usually asked to transfer title so the material can be deposited with a museum alongside the site archive, and that transfer should be addressed in the contract rather than at the end of the dig.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.