6 Long Wall Haddenham Buckinghamshire HP17 8DL Data via plota.co.uk

PL/26/07223/SA - Certificate of Lawful Use - Proposed Awaiting decision

Proposal

Certificate of Lawfulness for proposed single storey rear extension to house. Alterations to the existing detached double garage comprising insertion of rooflights, replacing the up and over doors with roller shutter doors, replace the side door with a set of bifold doors, and installation of a stud wall internally. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
8 Sept 2026
Decision
Expected by 3 Nov 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 3 Nov 2026, from Buckinghamshire's recent extensions.

Site constraints 4

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 ↗
33 listed buildings within 150 m
Nearest: Swiss Cottage, Grade II, 30 m away · 33 Grade II
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.
Show all 33 with distances
Historic England ↗
Also on the record
Inside the Haddenham (Buckinghamshire) built-up area; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 3, 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.

Sales history 1

Last sold for £196,000 in December 1996. Detached house, freehold.

20 December 1996£196,000

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

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Important details

Application type
Certificate of Lawful Use - Proposed
Postcode
HP17 8DL
Received
8 Sept 2026
Validated
8 Sept 2026
Ward
Haddenham and Stone
Parish
Haddenham
Case officer
Show
Target decision
3 Nov 2026
Decision level
Delegated Decision
Applicant
Show
Agent
McAndrew Associates Ltd

Decision outlook

Day 31 of the 56-day target. Buckinghamshire usually decides extensions by day 56.

Day 3125 days to the 56-day target
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 27 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry
3 Nov 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

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