304 Desborough Avenue High Wycombe Buckinghamshire HP11 2TJ Data via plota.co.uk

PL/26/06135/SA - Certificate of Lawful Use - Proposed Registered

Proposal

Certificate of lawfulness for proposed loft conversion involving a hip to gable roof extension, rear dormer and front rooflights. 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

Decision

Expected by 24 Sept 2026

Under consideration

No decision has been issued yet. Plota predicted a decision around 9 Oct 2026; it is now day 71.

Documents 2

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form and Certificate · 30 Jul 2026 View ↗

Site constraints 2

Also on the record

Radon affected area, class 2; Inside the High Wycombe built-up area.

Not affected

Outside flood zones 2 and 3 · Not green belt · No listed building 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.

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Important details

Council: Buckinghamshire
Application type: Certificate of Lawful Use - Proposed
Postcode: HP11 2TJ
Received: 30 Jul 2026
Validated: 30 Jul 2026
Ward: Abbey
Parish: High Wycombe Unparished Area
Case officer: Show
Target decision: 24 Sept 2026
Decision level: Delegated Decision
Applicant: Show
Agent: New Designs Ltd

Decision outlook

Day 71, past the statutory target. 84% of extensions in Buckinghamshire are decided within thirteen weeks, which runs to 29 Oct 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 7 Oct 2026.

predicted

Day 7115 days past 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 7 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry: 24 Sept 2026
Env. assessment: No

Historical activity at this location

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

Within ~100m

Nearby activity

2025

309 Desborough Avenue High Wycombe Buckinghamshire HP11 2TH

Conversion of the existing single dwellinghouse into two self-contained flats. Works to i…

PL/25/5956/FA 27 Nov 2025

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