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Coniston 17 Park Drive Blundellsands L23 6TW

DC/2025/02042Householder applicationApproved
Householder

Approved on 20 October 2026

Council decision: Approve with Conditions7 conditions

Site boundary (council red line)

Proposal

Erection of first floor and flat roof design with a two storey stair tower extension.

Received
8 January 2026
Public comments
0 · last counted 26 October 2026
Ward
Blundellsands Ward
Agent
Diaz Associates
  1. Received8 Jan
  2. Validated8 Jan
  3. Consult.29 Aug
  4. Target
  5. Decided20 Oct

Decided in 285 days (council typically 56)

About this application

This is a full planning application for an extension at Coniston 17 Park Drive Blundellsands L23 6TW. Sefton has handled 1,804 applications of this type. This one was decided in 285 days, 33 weeks longer than Sefton's typical decision time. The site is in the Blundellsands Park conservation area, with 1 listed building nearby. There are no previous applications recorded at this address. In the past year there have been 110 applications across Blundellsands Ward. We hold 341 applications in total for the L23 postcode area.

95% of full applications at Sefton Metropolitan Borough Council were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode
L23 6TW
Application type
Householder application
Scale / size
Small

Planning application dates

Date validated
8 January 2026
Consultation expiry
23 March 2026
Consultation end
29 August 2026

Applicant and agent

Agent
Diaz Associates
Agent address
5 Cavendish Road Crosby Liverpool L23 6XB

Publicity

Advertisement expiry
11 February 2026
Site notice end
8 February 2026

Additional information

Documents
0

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Blundellsands Park Conservation Area
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (23)

flood storage areas, listed buildings, Article 4 directions, tree preservation orders, 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, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts 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 2026-11-03. 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.

Source: Sefton

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