11A Welwyn Avenue Birkdale PR8 3BE Data via plota.co.uk

DC/2026/01319 - Variation of condition Approved
Admin / procedural

Proposal

Variation of condition 2 pursuant to planning permission approved 07/08/2025 to allow for single storey rear extension to protrude an additional 1 metre and removal of parapet Condition Number(s): 2) The development hereby granted shall be carried out strictly in accordance with the following details and plans: Existing and Proposed Plans reference 839-01, 839-02 dated 12.6.25 & 839-03-B dated 3.7.25 Reason: To ensure a satisfactory development. Conditions(s) Removal: Ground floor extension to protrude an additional 1 meter and removal of parapet Drawing 839-03-B to be exchanged for drawing 839-03-D Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
7 Aug 2026
✓
Approved
9 Sept 2026

Approved on 9 Sept 2026 · Delegated Decision · Last checked 10 Sept 2026

Documents 4

Decision & officer reports 3

PDF Decision - variation of condition approv Correspondence · 9 Sept 2026 View ↗ PDF Officer report Report · 8 Sept 2026 View ↗ PDF Dc/2025/00989 decision notice Correspondence · 12 Aug 2026 View ↗

Application forms 1

PDF Applicationformredacted Application Form · 7 Aug 2026 View ↗

All documents on the council site ↗

Associated applications 2

  • Part of

    FullApprovedcouncil archive

    Conditions 2 varied

    • VariationVariation of condition 2 to allow for single storey rear extension to protrude an additional 1…This applicationDC/2026/01319

Site constraints 6

Special area of conservation 66 m away: Sefton Coast
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
SSSI 66 m away: Sefton Coast SSSI
Natural England may need consulting, depending on what is proposed.
Sites of special scientific interest are the best wildlife and geological sites in the country. Development likely to harm one is rarely permitted.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Southport built-up area; Green belt 35 m away: Merseyside and Greater Manchester; National infrastructure project 1981 m away: East Irish Sea Transmission Project, at pre-application.
Not affected
Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Sales history 1

Last sold for £270,000 in October 2017. Semi-detached house, leasehold.

6 October 2017£270,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area115 m² (1,238 sq ft)
Energy ratingD (67 out of 100), could reach B
PropertySemi-detached house, 6 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in June 2017, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Sefton
Application type
Variation of condition
Postcode
PR8 3BE
Received
7 Aug 2026
Validated
7 Aug 2026
Ward
Ainsdale Ward
Case officer
Show
Target decision
2 Oct 2026
Decision
Approve with Conditions
Decision date
9 Sept 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Clayton Architecture Limited

Consultation & key dates

Comments by
6 Sept 2026
Statutory expiry
2 Oct 2026
Env. assessment
No

Historical activity at this location

7 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025 Approved
Erection of a single storey rear extension, rear dormer extension and additional roof lig…
DC/2025/00989
Within ~100m

Nearby activity

2024 Approved
21 Welwyn Avenue Birkdale PR8 3BE
Erection of a single storey extension to the rear and alterations to the side elevation f…
DC/2024/00778
2023 Approved
21 Welwyn Avenue Birkdale Southport PR8 3BE
Erection of a single storey extension to the rear, following the demolition of existing c…
DC/2023/00406
2021 Approved
14 Welwyn Avenue Birkdale Southport PR8 3BE
Erection of a single storey extension to the rear, alterations to the side elevation and…
DC/2021/01898
2019 Approved
554 Liverpool Road Birkdale Southport PR8 3BG
Erection of a single storey extension to the rear/side of the dwellinghouse
DC/2019/02046
2018 Approved
554 Liverpool Road Birkdale Southport PR8 3BG
Erection of a single storey garden shed to the rear of the dwellinghouse (retrospective a…
DC/2018/01746
2016 Approved
19 Welwyn Avenue Birkdale Southport PR8 3BE
Prior approval submission for proposed rear extension projecting 4.5 metres from the rear…
DC/2016/00361
Sefton
Planning Authority Score
6.4/10
Average
#84 of 296 councils
Relevant to this application:
Householder decisions

Sefton ranks #119 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (96%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Sefton decision statistics
Based on MHCLG data, the year to March 2026
93%
Overall approval rate
Above avg (87%) #66 of 296
96%
Householder approved
Above avg (90%) #59 of 296
71%
Decided in 8 weeks
Above avg (63%) #119 of 296
39%
Extended time limit
Below avg (41%) #141 of 296
87%
Minor dwellings approved
82 decided (1-9 homes)
87%
Major dwellings approved
15 decided (10+ homes)
78%
Change of use approved
76 decided
1,029
Total decisions
75 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.