Maplify · Local Authority Guides
Explore aerial imagery, flood risk, conservation areas, Green Belt and local planning policy in Brighton & Hove. Check the underlying council records before making a decision.
Mapped boundaries are for screening. Legal ownership and planning consent require verification.
01 / Map preview
Start with real aerial imagery, then switch planning layers on or off to screen the location. Search for a precise postcode or address to check the area around a particular site. The map is an initial research tool, not a planning decision or legal title plan.
Use aerial imagery around Brighton & Hove to understand the building footprint, access and neighbouring land uses.
Compare flood risk, heritage, protected land and planning layers. Switch overlays on or off to make the imagery readable.
Check the adopted council policies map and original designation records. Map layers and parcel boundaries are not planning decisions.
Basemap: Esri aerial imagery, with Streets available as an alternative. Planning overlays come from relevant public data sources and may update on different schedules. Always verify a critical designation with its issuing authority.
02 / Local planning guide
Maplify maps the constraints across Brighton & Hove, a coastal city bounded by the South Downs National Park rather than traditional Green Belt, with an exceptionally dense set of Regency-era conservation areas and a citywide Article 4 direction controlling HMO conversions.
Brighton & Hove operates one of the most far-reaching Article 4 directions in the country, removing permitted development rights for converting family homes into small HMOs across virtually the whole city — always check this before relying on permitted development for a change of use.
Explore related dataThe Lanes, North Laine and Regency Square conservation areas protect Brighton's distinctive Regency architecture, alongside Kemptown and Hove's seafront terraces. The Grade I listed Royal Pavilion is the city's standout heritage asset.
Explore related dataA citywide Article 4 direction requires planning permission for converting a family house into a small HMO anywhere in Brighton & Hove, one of the most comprehensive HMO controls of any English city, reflecting decades of studentification pressure.
Explore related dataTree Preservation Orders protect mature trees across Preston Park and the seafront gardens, alongside individual specimens in the city's many residential conservation areas.
Explore related dataAs a coastal city, Brighton & Hove faces tidal and coastal flood risk along its seafront, alongside surface water flooding on the steep chalk valleys running down to the sea — sea defences are a material consideration for waterfront development.
Explore related dataBrighton Marina and the New England Quarter regeneration sites anchor the city's brownfield strategy, given the constraints of the South Downs National Park to the north and the sea to the south leaving very little room to expand.
Explore related dataBrighton & Hove sits on chalk downland, which can contain natural dissolution features and old chalk mine workings beneath parts of the city — ground investigations are a standard requirement for larger developments to check for these features.
Explore related data03 / Research workflow
These practical guides bring together local development considerations, a due-diligence checklist, examples and frequently asked planning questions.
Local property and planning research
A meaningful planning constraints search begins with an accurate plot location and a clear description of the work. It is common for two sites in Brighton & Hove to have different planning circumstances despite sharing the same local authority. A council-wide shaded boundary is an early warning, not a substitute for the adopted development plan or individual planning history.
The local pattern of settlement, protected historic features, flooding and available brownfield land can make one part of the authority very different from another. Comparing the actual project with these local characteristics is more informative than relying on a general map label.
Consider a site in Brighton & Hove that appears suitable for an extension on aerial photography. The proposal could still be affected by drainage, a nearby protected tree, a listed building’s setting or an older consent condition. Checking each issue separately prevents a premature conclusion.
Step-by-step method
Search the address or postcode, confirm the parcel on aerial imagery and record the intended development. Note ownership and access questions separately from the planning constraints; imagery alone cannot prove legal boundaries or title.
Open the current adopted local plan and policies map published by the council. Check housing or employment allocations, any Green Belt boundary, conservation controls, specific site policies and applicable Article 4 directions against the precise red-line area.
Compare flood zones with surface-water routes, historic land uses and ground risk. Look for protected trees, ecological networks, potential access constraints and heritage setting effects. Note the source and date of each dataset.
Search the council application register for the site and surrounding land. Previous refusals can highlight a policy or design issue, but do not guarantee the result of a new proposal. Record constraints that may require surveys, consultation or specialist design.
Summarise each risk by evidence, likelihood, cost and next action. If a mapping layer conflicts with an official current record, verify with the responsible authority. Save the evidence to support decisions by your surveyor, architect, conveyancer or planning consultant.
What the location changes
Land-use history, drainage infrastructure and local policy need to be assessed together. The same aerial map that helps identify an undeveloped plot also reveals nearby roads, former buildings and neighbouring uses. None of those observations, on their own, proves that a planning application will succeed.
The Lanes, North Laine and Regency Square conservation areas protect Brighton's distinctive Regency architecture, alongside Kemptown and Hove's seafront terraces. The Grade I listed Royal Pavilion is the city's standout heritage asset.
As a coastal city, Brighton & Hove faces tidal and coastal flood risk along its seafront, alongside surface water flooding on the steep chalk valleys running down to the sea — sea defences are a material consideration for waterfront development.
Brighton & Hove sits on chalk downland, which can contain natural dissolution features and old chalk mine workings beneath parts of the city — ground investigations are a standard requirement for larger developments to check for these features.
Brighton Marina and the New England Quarter regeneration sites anchor the city's brownfield strategy, given the constraints of the South Downs National Park to the north and the sea to the south leaving very little room to expand.
Check conservation areas, protected trees, Article 4 restrictions and access. A house extension or conversion should be assessed against the actual building’s use, earlier extensions and the current local planning position.
Identify the former use, any industrial or ground-risk evidence, servicing routes, nearby sensitive neighbours and planning employment policies. Brownfield does not automatically mean planning permission.
Review Green Belt and countryside policy where applicable, agricultural and ecological constraints, floodplain boundaries and vehicle access. The absence of a map overlay is not proof of a developable allocation.
Questions people ask
Locate the exact plot on the aerial map, switch on relevant designation layers, then compare the results with the current adopted policies map and application record from the local planning authority. A postcode or town-wide map alone cannot confirm consent for a particular proposal.
That depends on the precise works, use, previous alterations, location and any Article 4 direction or heritage restrictions. Read the applicable national permitted-development rules and check the property-specific planning history before relying on an exemption.
Use the Environment Agency river, sea and surface-water risk datasets at the exact property location. Check local drainage records, ground level and access routes separately. A flood-map designation is not itself a full site-specific flood risk assessment.
Use the mapped layers to identify possible constraints, then verify the legal designation and relevant consent requirements against the council records and Historic England’s list. Aerial images cannot show whether a tree or building is legally protected.
No. Aerial imagery helps assess location and surroundings, but legal ownership, adopted policy, services, ecology, highways and ground conditions require separate evidence. Use the map as a screening tool and check official sources before committing money.
04 / Official records and related guides
For a live planning application or property transaction, the council's current records take precedence over a map preview. Browse relevant mapping topics and other nearby council guides to continue your research.
Use the current council website, development-plan documents and official designation registers.
Compare council policy checks with dedicated national data-layer explainers.
Planning policies can change across a borough boundary, even for neighbouring sites.
Find broader guidance on planning, land ownership and flood risk.
Open the full aerial map, draw a site boundary, compare planning layers and generate a downloadable constraints report.
Open the Full Map