Which East of England authorities are affected?

All seven Norfolk local planning authorities for the Wensum and Broads catchments, and authorities in the Stour and Orwell catchments in Suffolk, including Ipswich and parts of Babergh and East Suffolk. Catchments do not follow council boundaries, so this site tests each register point against the published catchment polygons rather than tagging whole authorities.

Does a nutrient credit unlock the whole register?

Only the catchment the credit serves, and only if the credit is available at a price the scheme can carry. Credits are a cost. They feed the housing-cost discount.

Does the Norfolk Environmental Delivery Plan end this?

Not yet, and not entirely. The draft plan was published on 17 September 2026 and consultation closes on 27 October 2026. Natural England must then submit it, the Secretary of State must find that it passes the overall improvement test, and it must be published with a start date before anyone can use it. If it is made, a developer can pay the levy instead of finding mitigation. That is a cost moving to a fixed price, not a constraint disappearing.

Updated 20 September 2026

Nutrient neutrality

Natural England advice dated 16 March 2022 covers the Wensum and Broads catchments and affects all seven Norfolk planning authorities. Suffolk's Stour and Orwell estuaries are in the same position. On 17 September 2026 Natural England published a draft Environmental Delivery Plan for the Broads and Wensum, offering a flat levy of £2,675 a home in place of site-by-site mitigation. It is out for consultation and not yet in force.

What the advice did

Natural England told competent authorities that they could not conclude no adverse effect on the integrity of the named European sites from additional overnight accommodation, unless nutrient neutrality was demonstrated. In practice that halted grants of permission for homes, care homes and tourist accommodation across large parts of Norfolk and into Suffolk.

Norwich City Council's public position has been that it will not be able to grant planning permission for developments comprising overnight accommodation until mitigation is available. Credits have been slow to appear in parts of the Wensum and Broads catchments.

Why this is a capacity discount

A register row can remain on Part 1 while the planning system cannot lawfully issue the consent that would let it be built. That is not a temporary admin delay. It is a legal stop until a mitigation market exists.

Where credits do exist, they are an abnormal cost. They reduce residual land value or they are passed into the price of the home. See housing cost.

What the Nature Restoration Fund changes

Part 3 of the Planning and Infrastructure Act 2025 created Environmental Delivery Plans and the nature restoration levy. Where an EDP is in force and covers an impact, a developer who commits to the levy has that obligation disapplied, and the council does not assess it in the usual way. The Nature Restoration Levy Regulations 2026 came into force on 11 September 2026, and the first draft EDP anywhere in England — the Broads and Wensum — followed on 17 September 2026. It proposes a flat £2,675 a home and is stated to support up to 15,780 homes across Norfolk.

Three things are worth keeping straight. The draft is not operative: consultation runs to 27 October 2026, and the Secretary of State has to find that it passes the overall improvement test before it can be made. It is voluntary where it applies, so the existing mitigation routes remain for anyone outside it. And it covers nutrients only — every other constraint on a site, including biodiversity net gain, is untouched.

For this site's purposes that makes the nutrient step the most movable colour on the map. It is a real legal stop today. It may become a fixed per-home cost in 2027, which would move those homes from the nutrient discount to the housing cost discount rather than out of the discounts altogether.

How to read the map

The nutrient step tests each register point against the published nutrient neutrality catchment polygons, so a site is lit because of where it is, not because of which council files the register. Earlier versions of this map tagged whole authorities, which overstated the problem: a point in a Norfolk district outside the Broads or Wensum catchment is not frozen.

Questions people ask

Which East of England authorities are affected?: All seven Norfolk local planning authorities for the Wensum and Broads catchments, and authorities in the Stour and Orwell catchments in Suffolk, including Ipswich and parts of Babergh and East Suffolk. Catchments do not follow council boundaries, so this site tests each register point against the published catchment polygons rather than tagging whole authorities.
Does a nutrient credit unlock the whole register?: Only the catchment the credit serves, and only if the credit is available at a price the scheme can carry. Credits are a cost. They feed the housing-cost discount.
Does the Norfolk Environmental Delivery Plan end this?: Not yet, and not entirely. The draft plan was published on 17 September 2026 and consultation closes on 27 October 2026. Natural England must then submit it, the Secretary of State must find that it passes the overall improvement test, and it must be published with a start date before anyone can use it. If it is made, a developer can pay the levy instead of finding mitigation. That is a cost moving to a fixed price, not a constraint disappearing.

Where the numbers come from

Nutrient neutrality advice to competent authorities — Natural England, 16 March 2022. Covers the River Wensum SAC and Broads SAC/Ramsar catchments, affecting all seven Norfolk local planning authorities.
Nutrient neutrality and planning applications — Norwich City Council, 18 October 2024. Norwich has stated it cannot grant permission for overnight accommodation until mitigation is available.
Nutrient pollution: draft Norfolk Environmental Delivery Plan consultation — Natural England / Department for Environment, Food and Rural Affairs, 17 September 2026. First draft EDP under the Nature Restoration Fund, covering the Broads SAC and Ramsar and the River Wensum SAC. Proposes a flat nature restoration levy of £2,675 a home and is stated to support up to 15,780 homes. Consultation closes 27 October 2026; the plan is not in force.
Understanding the Nature Restoration Fund — Ministry of Housing, Communities and Local Government, 17 September 2026. Part 3 of the Planning and Infrastructure Act 2025. Paying the levy under an operative EDP disapplies the specific habitats obligations it covers. Where an EDP is voluntary the existing nutrient neutrality routes remain. Biodiversity net gain is outside the scheme.
Nutrient neutrality catchment dataset — Ministry of Housing, Communities and Local Government, 1 January 2026. Open Government Licence. Intersected with register points on this site, so the nutrient colour is a site-level test rather than an authority tag.
Brownfield land dataset — Ministry of Housing, Communities and Local Government, 20 September 2026. National aggregation of Part 1 registers. Points, not polygons. Coverage may be incomplete. Open Government Licence v3.0.