1 Holly Hey Whiston Knowsley L35 3JR Data via plota.co.uk

26/00246/FUL - Full Application Approved
Extensions & alterations

Proposal

Erection of two storey side extension together with the removal of existing conservatory Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
21 May 2026
✓
Approved
31 Jul 2026

Approved on 31 Jul 2026 · Delegated Decision · Last checked 31 Jul 2026

Documents

View the documents on the council's website ↗

Site constraints 4

Coal mining development high risk area
Recorded coal mining features at or near the surface. Most planning applications here need a coal mining risk assessment. Nearest recorded mine shaft: 29 m away (reference 346390-035).
From the Mining Remediation Authority, formerly the Coal Authority. The development high risk area marks recorded coal mining features at or near the surface: mine shafts and adits, shallow workings, mine gas and former opencast sites. Most planning applications there need a coal mining risk assessment; householder applications, changes of use and some minor works are exempt. Mine entry positions come from old plans and can be out by several metres, and unrecorded workings can exist anywhere in the coalfield.
Coal mining risk assessments ↗
Also on the record
Radon affected area, class 3; 1 listed building within 150 m; Inside the Prescot built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Mining Remediation Authority, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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.

Building

Floor area66 m² (710 sq ft)
Energy ratingE (43 out of 100)
PropertySemi-detached house, 5 habitable rooms
Built1983 to 1990
HeatingNo system present: electric heaters assumed
WallsCavity wall, filled cavity

From the energy performance certificate lodged in March 2010, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Knowsley
Application type
Full Application
Postcode
L35 3JR
Received
21 May 2026
Validated
21 May 2026
Ward
Whiston & Cronton
Parish
Whiston Town Council
Case officer
Show
Target decision
16 Jul 2026
Decision
Granted
Decision date
31 Jul 2026
Decision level
Delegated Decision
Applicant
Show
Agent
A & P Group Services

How this decision compares

Decided in 71 days from validation, 18 days slower than Knowsley's median of 53 for extensions. Approved, as 98% of extensions here are.

73%decided within 8 weeks
98%approved
143decided in the last year

Plota live figures for extensions decided by Knowsley in the last twelve months, from validation. Knowsley decision record →

Public comments

No public comments yet.

7 neighbours consulted · Last counted 31 Jul 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry
16 Jul 2026
Env. assessment
No

Historical activity at this location

5 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
15 Halton Hey Whiston Knowsley L35 3JP
ERECTION OF A TWO STOREY SIDE EXTENSION
25/00674/FUL
2022 Approved
11 Long Hey Whiston Knowsley L35 3JN
ERECTION OF SINGLE STOREY SIDE AND REAR EXTENSION
22/00642/FUL
2022 Approved
19 Halton Hey Whiston L35 3JP
ERECTION OF A PART SINGLE STOREY PART TWO STOREY SIDE EXTENSION
22/00001/FUL
2020 Approved
4 Halton Hey Whiston L35 3JP
ERECTION OF TWO STOREY SIDE EXTENSION
20/00014/FUL
2018 Approved
20 Stone Hey Whiston L35 3JT
ERECTION OF A TWO STOREY EXTENSION TO SIDE
18/00078/FUL
Knowsley
Planning Authority Score
4.8/10
Below average
#159 of 296 councils
Relevant to this application:
Householder decisions

Knowsley ranks #186 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (95%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Knowsley decision statistics
Based on MHCLG data, the year to March 2026
94%
Overall approval rate
Above avg (87%) #41 of 296
95%
Householder approved
Above avg (90%) #83 of 296
60%
Decided in 8 weeks
Below avg (63%) #186 of 296
45%
Extended time limit
Above avg (41%) #191 of 296
92%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
6 decided (10+ homes)
83%
Change of use approved
23 decided
299
Total decisions
19 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

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.