A Guide to Jersey’s Planning Zones

Often, Jersey homeowners don't know which planning zone their home sits in, and these zones can be the deciding factor of what you can or cannot do to your property. 

Jersey's Bridging Island Plan (the primary planning framework and rulebook guiding development across the island) splits the island into a small number of designated zones, each with its own rules, its own logic, and its own room for manoeuvre. Once you know where you are on the map, the whole planning conversation becomes a lot clearer. 

So, here's a breakdown of the five designations you're most likely to encounter, what each one means in practice, and how to check your own site.

The Built-Up Area

If your home is in St Helier or one of the parish centres, you're most likely in the Built-Up Area. This is the zone where the Island Plan directs most new housing and development, and it's where homeowners generally have the widest scope to extend, convert, or remodel. 

That doesn't mean anything goes. Local character, scale, neighbours, and the relationship to the street still matter (and they still get scrutinised). But the starting position is more permissive than anywhere else on the island. 

Melrose | Built-Up Area

The Green Zone

The Green Zone is Jersey's working countryside: the fields, lanes, hedgerows, banques, and granite vernacular that give the island so much of its character.

The Bridging Island Plan applies a strong presumption against new development here, with the aim of protecting that landscape from incremental erosion.

For homeowners, this doesn't mean nothing can happen. The policy allows for proportionate, well-designed extensions to existing homes, and the sensitive conversion of historic farm buildings into dwellings is a recognised route. New builds are harder to justify, but not impossible — they generally need to be less visually impactful than the property they replace, and the design has to respond to the landscape.

The case has to be well made, the design has to earn its place, and the brief has to be the right one. Well-argued schemes do get approved, and we've delivered several.

Rozel Campsite | Green Zone

The Green Backdrop Zone

The Green Backdrop Zone sits within the Built-Up Area, but with additional planning constraints layered on top. It's the rising ground and countryside you see behind St Helier (the landscape that frames town) and it gets its own designation precisely because of how visually important that backdrop is.

Larger new builds can be approved here, and the zone is more permissive than the Green Zone overall. But the bar for design quality is high. Massing, ridge lines, materials, planting, and how a building reads from a distance all become front-and-centre considerations.

Sensitive, context-led design is non-negotiable.

Fontenay | Green Backdrop Zone

The Coastal National Park & Protected Coastal Area

These two designations carry the highest level of protection in Jersey. The Coastal National Park covers the most sensitive parts of the coast, headlands, and seascape — think St Brelade's Bay and Gorey — and the Protected Coastal Area, introduced through the Bridging Island Plan, extends that protection further along the coastal edge.

Development inside these zones is very limited. The policy explicitly prioritises landscape and seascape character over almost everything else, and any scheme has to be context-led and ecologically aware from the outset.

That said, "limited" isn't the same as "impossible." Extensions to existing homes are the most likely route through. New builds can be considered, but typically only on the sites of existing dwellings, and the process is a protracted one — expect more consultation, more iteration, and a longer timeline than you'd see elsewhere on the island.

The brief has to be the right one, the design has to be exceptional, and the planning argument has to be solid. But it can be done.

Honfleur | Coastal National Park

How To Find Your Zone

The Government of Jersey publishes an interactive map that lets you search by road name or click anywhere on the island to see which planning zone, policies, and designations apply to that point. You can find it here:

It's worth doing this before you do anything else. 

What this means for your project

The zone you're in sets the starting point. Your brief, your needs, and what you want from your home then shape what follows.

We listen to the site, the context, and what our clients want to live in before we put pen to paper. That's especially true in Jersey's more protected zones, where the design has to earn its place there.

We've worked in every one of the designations above, including approved schemes in the Coastal National Park and Green Backdrop Zone. Through understanding the rules, the site, and the client's vision, we create design solutions that lead to approvals.

If you're thinking about a project and you'd like to talk through what's possible on your site, we'd love to hear from you: