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Proposed Sizewell C Sizewell Power Station Road Sizewell Leiston Suffolk

DC/25/4674/CONOther ConsultationPermitted
Discharge / amendments

Proposal

Consultation - Condition Coastal Processes Monitoring and Mitigation Plan monitoring reports - DML condition 14(3)

Received
2 December 2025
Decided
17 December 2025 · No Objections
Decision level
Delegated (officer decision)
Public comments
1
Ward
Aldeburgh And Leiston
The council did not publish a location for this application.
  1. Received2 Dec
  2. Validated2 Dec
  3. Consult.24 Dec
  4. Target23 Dec
  5. Decided17 Dec

Decided in 15 days (council typically 56)

8 weeks typical decision time in East Suffolk86% of outline applications approved

This is an outline application at Proposed Sizewell C Sizewell Power Station Road Sizewell Leiston Suffolk. East Suffolk has handled 931 applications of this type and approves 85% of them, typically deciding them in 43 days. This one was decided in 15 days, 4 weeks quicker than East Suffolk's median. There have been 9 other applications at this address. In the past year there have been 106 applications across Aldeburgh And Leiston.

Application Details

Reference
DC/25/4674/CON
Address
Proposed Sizewell C Sizewell Power Station Road Sizewell Leiston Suffolk
Local Authority
East Suffolk
Application Type
Other Consultation
Scale / Size
Small
Decision Status
Permitted
Current Status
Responded
Ward
Aldeburgh And Leiston
Parish
Leiston Cum Sizewell

Applicant & Agent

Applicant Address
Mallard House Peasholme Green York Y01 7PX

Planning Application Dates

Date Received
2 December 2025
Target Decision Date
23 December 2025
Date Decided
17 December 2025
Date Validated
2 December 2025
Date Submitted
2 December 2025
Last Date for Comments
24 December 2025
Permission Expires
17 December 2030

Planning Decision

Decision
No Objections
Decided By
Delegated Decision
Statutory Period
21 days

Publicity

Appeal

Additional Information

Comments
1
Documents
3

Source: East Suffolk

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Planning history at this site

9 other applications at this property, newest first.

  1. 2026
    12 Oct

    Discharge of Requirements (28 days) - Bespoke Mitigation Plan (Noise and Vibration) Rail Works November 2026…

    PendingDischarge of conditionsDC/26/3585/DRR28
  2. 2026
    29 Sep

    Consultation - Marine Management Organisation Consultation - Variation Request No. 4 to the Sizewell C (SZC)…

    PendingDischarge of conditionsDC/26/3415/CON
  3. 2026
    24 Jul

    Discharge of Requirements (42 days) - Discharge of Requirement 9 (Main development site: Site clearance) of…

    PendingDischarge of conditionsDC/26/2639/DRR42
  4. 2026
    20 Jul

    Discharge of Requirement 19 (Main development site: Marine infrastructure) - Temporary Hard Coastal Defence…

    PendingDischarge of conditionsDC/26/2576/DRR
  5. 2026
    13 May

    Bespoke Mitigation Plan (Noise and Vibration) Temporary Construction Area (MDS BMP 7), secured by the Noise…

    PendingApplicationDC/26/1777/DRR28
  6. 2026
    27 Jan

    Consultation - Nearshore Infrastrcuture Pre-Installation Bathymetry

    ApprovedDischarge of conditionsDC/26/0327/CON

Planning constraints

Designations at the address point. Ones next to the site may also apply.

  • Special Area of Conservation: Southern North Sea
  • Special Protection Area: Outer Thames Estuary
  • Heritage coast: Suffolk
  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.

Also checked, none recorded (19)

flood storage areas, conservation areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Ramsar sites, ancient woodland, national nature reserves, local nature reserves and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-10-09. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

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