Stonehills 4 Dadfield Close Cuddington Buckinghamshire HP18 0BH Data via plota.co.uk

PL/26/06107/SA - Certificate of Lawful Use - Proposed Approved

Proposal

Certificate of lawfulness for proposed changes to property elevation, to include enlarging the sliding doors. New windows to the side elevation (facing fence), relocating the existing pedestrian garage door to existing window opening, and converting the existing pedestrian garage door to a window. Data via plota.co.uk

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View original council record ↗Last checked 7 Oct 2026, 20:20

Street View

Application progress

✓

Received

30 Jul 2026

✓

Approved

22 Sept 2026

Approved on 22 Sept 2026 · Delegated Decision · Last checked 23 Sept 2026

Documents 4

Site constraints 5

Habitat network: Network Enhancement Zone 1

Where habitat is joined up enough to work as a network. Context, not a constraint on its own.

Radon affected area, class 6

An estimated 30% or more of homes reach the radon action level. Indicative for the 1 km square, which takes the highest class found in it; a radon test gives the answer for a building.

From the British Geological Survey and UK Health Security Agency indicative atlas. Under building regulations, as the BRE guide BR 211 (2023) sets out, new buildings and extensions need basic radon protection from class 3 in England and Wales and from class 2 in Scotland, and full protection from class 5. The class at the site itself, from the detailed BGS map, decides which.

UKHSA radon ↗

1 listed building within 150 m

Nearest: Dadbrook Cottage, Grade II, 61 m away

The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.

Historic England ↗

Also on the record

Inside the Cuddington (Buckinghamshire) built-up area; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 2, but it predates the buildings here and the current map does not class it as farmland.

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 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 area229 m² (2,465 sq ft)

Energy ratingD (65 out of 100), could reach C

PropertyDetached house, 9 habitable rooms

Built1991 to 1995

HeatingBoiler and radiators, mains gas

WallsCavity wall, as built, insulated (assumed)

From the energy performance certificate lodged in October 2022, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council: Buckinghamshire
Application type: Certificate of Lawful Use - Proposed
Postcode: HP18 0BH
Received: 30 Jul 2026
Validated: 30 Jul 2026
Ward: Haddenham and Stone
Parish: Cuddington
Case officer: Show
Target decision: 24 Sept 2026
Decision: Cert of Law PROPOSED-granted
Decision date: 22 Sept 2026
Decision level: Delegated Decision
Applicant: Show
Agent: Ellisclare Ltd

How this decision compares

Decided in 54 days from validation, about the council's usual 56 days. Approved, as 82% of extensions here are.

This one54d

Council56d

UK55d

54%decided within 8 weeks

82%approved

2,226decided in the last year

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

Public comments

No public comments yet.

Last counted 23 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry: 24 Sept 2026
Env. assessment: No

Buckinghamshire

Planning Authority Score

1.3/10

Poor

#284 of 296 councils

Relevant to this application:

Householder decisions

Buckinghamshire is one of the slowest councils in England for householder decisions, ranking #280 out of 296. 55% of applications have the time limit extended, above the 41% national average. Householder applications are slightly less likely to be approved here (86%) than the national average (90%).

Among the slowest councils in England

for householder decisions

These figures are council-wide context, not a prediction for this application. View full council performance

Buckinghamshire decision statistics

Based on MHCLG data, the year to March 2026

84%

Overall approval rate

Below avg (87%) #217 of 296

86%

Householder approved

Below avg (90%) #241 of 296

34%

Decided in 8 weeks

Below avg (63%) #280 of 296

55%

Extended time limit

Above avg (41%) #248 of 296

76%

Minor dwellings approved

491 decided (1-9 homes)

82%

Major dwellings approved

71 decided (10+ homes)

82%

Change of use approved

131 decided

4,446

Total decisions

690 refused in the year to March 2026

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.