Planning application
Island Cottage Mill Lane Sidlesham Chichester West Sussex PO20 7LU
Works: Extension Domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Two storey side extension and associated alterations.
As published by the council, reference 25/01931/DOM
Application record
- Reference
- 25/01931/DOM
- Type
- Domestic Application (Householder)
- Status
- Permit
- Decision
- PERMIT
- Received
- 13 Aug 2025
- Validated
- 13 Aug 2025
- Decided
- 3 Oct 2025
- Ward
- Sidlesham With Selsey North
- Parish
- Sidlesham
- Decision by
- Delegated Decision
- Postcode
- PO20 7LU
Timeline
Dates from the published record
-
13 Aug 2025
Received by South Downs National Park
-
3 Oct 2025
Decision issued: PERMIT
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, a planning consultancy registered in Lewes
17 applications on PlanIndex · across 6 councils · 100% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
21 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat this grant of permission means
South Downs National Park granted permission on 3 October 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 500 metres
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Island Cottage Mill Lane Sidlesham Chichester West Sussex PO20 7LU
Two storey side extension and associated alterations.
Granted Householder Extension 21 docsDomestic -
Johnsons Barn Mill Lane Sidlesham Chichester West Sussex PO20 7NA
81% historically approved · decision due ~10 Jun
Demolition of existing agricultural barn and construction of 1 no. replacement residential dwelling.
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Johnsons Barn Mill Lane Sidlesham Chichester West Sussex PO20 7NA
81% historically approved · decision due ~10 Jun
Demolition of existing agricultural barn and construction of 1 no. replacement residential dwelling.
Awaiting decision Full applications Demolition 38 docsDomestic -
Willow House Mill Lane Sidlesham Chichester West Sussex PO20 7NA
93% historically approved · decision due ~26 May
Single-storey side extension to east elevation and first-floor pitched-roof extension, with 2 no. dormers and 1 no. roof light to south and north elevations. Balcony to east elevation.
Awaiting decision Householder Extension Loft or dormer 23 docsSmall domestic -
Willow House Mill Lane Sidlesham Chichester West Sussex PO20 7NA
93% historically approved · decision due ~26 May
Single-storey side extension to east elevation and first-floor pitched-roof extension, with 2 no. dormers and 1 no. roof light to south and north elevations. Balcony to east elevation.
Awaiting decision Householder Extension Loft or dormer 23 docsSmall domestic -
The Old Poor House Mill Lane Sidlesham Chichester West Sussex PO20 7NA
81% historically approved · decision due ~23 Jun
Use of building as annexe and holiday let accommodation, permitted under Permission 20/03253/DOM.
Awaiting decision Full applications 12 docs
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