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Search any UK location to check whether a site falls within a World Heritage Site or its buffer zone before you buy, plan or develop.
Updated: as UNESCO and Historic England amend boundaries · Last checked by Maplify: July 2026
This layer maps UNESCO World Heritage Sites in England, together with their buffer zones. England has around 20 sites, including Stonehenge, the Tower of London, the City of Bath and the English Lake District — places recognised as having "outstanding universal value" to humanity as a whole, not just national significance.
Most sites have a defined buffer zone extending protection beyond the core designated area, safeguarding the setting, key views and the wider landscape or townscape context that contributes to the site's significance.
World Heritage status is not itself a UK statutory designation, but the NPPF requires great weight to be given to its conservation, and harm to a site's outstanding universal value is treated with the same seriousness as harm to a scheduled monument. Sites frequently overlap with statutory protections such as Conservation Areas, Listed Buildings and Scheduled Monuments, compounding the level of scrutiny a proposal will face.
Because World Heritage status carries international as well as national reputational weight, proposals affecting a site or its buffer zone are typically subject to particularly close design review, and in the most serious cases can attract UNESCO's own monitoring attention.
Core World Heritage Site
The area formally inscribed by UNESCO as having outstanding universal value.
Buffer zone
Area extending protection to safeguard setting, views and the wider landscape or townscape context.
Harm to the outstanding universal value of a World Heritage Site, or to its buffer zone setting, requires clear and convincing justification, treated with the same seriousness in national planning policy as harm to a scheduled monument. Any impact assessment must address the site's specific recognised attributes directly, not just general visual or amenity change.
Because these sites frequently overlap with other statutory heritage designations, an application may need to separately address listed building consent, scheduled monument consent and World Heritage impact — each with its own evidential requirements.
Confirm the exact core site and buffer zone boundary with Historic England's National Heritage List.
Identify the site's specific recognised attributes of outstanding universal value from its UNESCO inscription documents.
Commission a heritage impact assessment addressing those attributes directly, not just general visual change.
Check for overlapping Listed Building, Scheduled Monument or Conservation Area designations on the same site.
Engage Historic England and the local planning authority's conservation officer at pre-application stage.
This is general guidance, not professional or legal advice — confirm specifics with the relevant authority or a qualified professional.
Property Developers
Assess heritage risk before committing to a site within or near a World Heritage boundary.
Planning Consultants
Advise on the evidential bar for demonstrating no harm to outstanding universal value.
Architects
Design schemes that respect the site's recognised attributes and setting.
Surveyors
Factor World Heritage status into valuation and feasibility reports.
Landowners
Understand realistic development potential on or near a World Heritage Site.
Environmental Consultants
Coordinate heritage impact assessments alongside other environmental surveys.
World Heritage checks are commonly run alongside these related layers.
How do I check if a site is within a World Heritage Site or its buffer zone?
Search the site on Maplify and enable the World Heritage Sites and Buffer Zones layers. If either shows on the site, development proposals must address the outstanding universal value of the designation.
Is World Heritage status a statutory planning designation?
Not directly, but the NPPF requires great weight to be given to the conservation of World Heritage Sites, and sites frequently overlap with statutory designations such as Conservation Areas and Scheduled Monuments.
What does "outstanding universal value" mean for planning?
Each site's designation is built around specific attributes recognised by UNESCO. Any impact assessment must address these specific attributes directly rather than general visual change, and clear evidence of no harm — or convincing justification for any harm — is expected.
How many World Heritage Sites are there in England?
England has around 20 UNESCO World Heritage Sites, including Stonehenge, the Tower of London, the City of Bath and the English Lake District.
Does the buffer zone carry the same protection as the core site?
Buffer zones extend protection to safeguard setting, views and the wider landscape context, and harm to the buffer can still weigh heavily in a decision, though the core site itself typically carries the strongest protection.
Can World Heritage status be lost?
Yes, in rare and serious cases — UNESCO can place a site "in danger" or delist it entirely if its outstanding universal value is judged to have been irreversibly harmed, which is treated as a very serious planning and reputational risk.
Open the map, generate a site report or save your search to come back to it later.
| Provider | Historic England / UNESCO |
| Geometry type | Polygon |
| Coverage | England (~20 World Heritage Sites) |
| Update schedule | Quarterly check against Historic England data |
| Reference date | July 2026 |
| Licence | Open Government Licence v3.0 |
