Scheduled monuments: consent, setting and works that need it

Scheduled monument consent is a separate consent from planning permission, granted by the Secretary of State rather than by the council, and it is needed for any works to a scheduled monument whether or not planning permission is also required. Carrying out those works without consent is a criminal offence under section 2 of the Ancient Monuments and Archaeological Areas Act 1979. That is the single most important thing to understand about scheduling: the council cannot grant it, cannot refuse it, and in most cases cannot tell you whether you have it.

Works to the setting of a monument are a different matter. Those are controlled through the planning system, with Historic England as a statutory consultee, and the test is a policy one rather than a consent one.

What scheduling covers

A scheduled monument is an ancient monument included in the schedule maintained under section 1 of the 1979 Act. The entry defines the monument by a map and a description, and the extent of the scheduled area is what the map shows, not what is visible on the ground.

Scheduling attaches to the land and to anything on it. A buried Roman villa with no surface expression is as fully protected as a standing castle keep. The boundary often extends well beyond the obvious feature, because it was drawn to include the archaeological deposits around it.

Where a building is both listed and scheduled, the monument regime takes precedence and listed building consent is not required for works to it. That catches owners of scheduled farm buildings and bridges, who apply to the council for listed building consent and receive a refusal to validate rather than an explanation.

The works that need consent

Section 2 applies to works resulting in the demolition, destruction or damage of a monument, works for the purpose of removing or repairing it or any part of it, works for making alterations or additions, and flooding or tipping operations on, over or under the land.

Read in full that is almost everything, including repair. Rebuilding a collapsed section of wall needs consent. Re-pointing needs consent. Installing a handrail needs consent. Ploughing to a greater depth than before needs consent, because it damages deposits.

The Ancient Monuments (Class Consents) Order 1994 grants consent in advance for defined categories, and those are the exceptions worth knowing.

• Agricultural, horticultural and forestry works of a kind carried out on the same land in the preceding six years, excluding certain operations such as subsoiling and drainage.
• Works by specified statutory undertakers for inspection, maintenance or repair of existing apparatus.
• Works for the repair or maintenance of machinery.
• Works urgently necessary in the interests of health or safety, subject to notification requirements.
• Works by Historic England.

The agricultural class consent is the one most often relied on and most often misunderstood. It permits continuation of an existing regime, not a change to a deeper or different one, and the six year test is evidential.

Setting, and the planning test that applies to it

Development near a monument almost never needs scheduled monument consent, because nothing is being done to the monument. It needs planning permission, and the planning test is about harm to significance through change to setting.

The National Planning Policy Framework treats scheduled monuments as designated heritage assets of the highest significance and sets a high bar for substantial harm to them. There is no equivalent of the statutory duties that apply to listed buildings and conservation areas under sections 66 and 72 of the Planning (Listed Buildings and Conservation Areas) Act 1990, so for monuments the duty is framed by national policy and by the development plan. In practice that makes the quality of the assessment more important rather than less.

Historic England must be consulted on development likely to affect a scheduled monument or its setting, under the consultation requirements in the Development Management Procedure Order 2015. Its response will usually address three things: what the significance of the monument is, how the proposal changes the way the monument is experienced and understood, and whether any harm has been minimised.

Setting work follows the staged approach in Historic England's guidance on the setting of heritage assets. Identify the asset and the setting, assess how setting contributes to significance, assess the effect of the proposal, explore ways to reduce harm, then record the result. A Heritage Statement that works through those stages for a monument, rather than describing the monument and asserting no harm, is the document that moves an application forward. Buffer zones and wider designations work in a comparable way, as our note on World Heritage Site buffer zones sets out.

Where both consents are needed

Some schemes need planning permission and scheduled monument consent, and the two run on different timetables with different decision makers.

Apply for the monument consent first, or at least in parallel. A planning permission for a scheme that cannot obtain scheduled monument consent is worthless, and councils will sometimes grant one without raising the point.

An illustrative example

This example is illustrative. A farmer wants to put up a grain store on a field that contains a scheduled Bronze Age round barrow. The proposed building sits 60 metres from the barrow, outside the scheduled area, with its access track crossing the edge of it.

The building needs planning permission, and Historic England will be consulted on the effect on the barrow's setting, particularly on views of it from the public footpath. The track is the sharper problem: laying stone across part of the scheduled area is a tipping operation on the land and needs scheduled monument consent, which may well be refused.

Moving the track 15 metres removes the consent requirement altogether and leaves only a setting assessment to argue. That is almost always the better answer, and it costs far less to find at sketch stage than after a refusal.

Evaluation around a monument

Where a scheme sits near a monument, the authority will usually want to know what survives in the development area itself, because the scheduled boundary is a line on a map rather than the edge of the archaeology.

The normal sequence is a desk assessment, then non-intrusive survey, then intrusive evaluation if the first two justify it. An Archaeological Desk-Based Assessment drawing on the Historic Environment Record establishes what is known. Geophysical survey maps anomalies across the site. An Archaeological Field Evaluation by trial trenching tests those anomalies and gives the county archaeologist something to advise on.

Do the desk assessment before the layout is fixed. The common failure is to design around the scheduled boundary, submit, and then find trial trenching reveals associated features across the proposed built area.

Who decides and how long it takes

Applications for scheduled monument consent are made to the Secretary of State, with Historic England administering the process and providing advice. There is no determination period equivalent to the eight weeks for a minor planning application, and the realistic planning assumption is that it will take longer than the planning application running beside it.

Pre-application discussion with the relevant Historic England regional team is worth more here than almost anywhere else in the system, because the people who will advise on the application are the people who can tell you whether the scheme is capable of consent at all.

This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.