344 Main Road, Biggin Hill, Westerham, TN16 2HN Data via plota.co.uk

26/02496/HPA - Householder planning permission Valid
Extensions & alterations

Proposal

Erection of ancillary outbuilding in rear garden Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
22 Jun 2026
✓
Validated
30 Jun 2026
Decision
Expected by 25 Aug 2026

Under consideration

No decision has been issued yet. Plota predicted a decision around 9 Oct 2026; it is now day 101.

The consultation period closed on 24 Jul 2026.

Documents 6

Statements & assessments 2

PDF REVISED Design and Access Statement Revised Drawing · 17 Sept 2026 View ↗ PDF Design and Access Statement Design and Access Statement · 22 Jun 2026 View ↗

Plans & drawings 3

PDF Location Plan Location Plan · 30 Jun 2026 View ↗ PDF Proposed site, floor, roof plan and elevation - 183-10 A Drawing · 22 Jun 2026 View ↗ PDF Existing Site Plan - 183-02 A Block Plan · 22 Jun 2026 View ↗

Application forms 1

PDF Application Form Redacted Application Form No Personal Data · 22 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 7

Green belt: London
Inappropriate development needs very special circumstances.
Green belt policy allows a short list of exceptions, such as limited extensions and replacement buildings. Anything else needs very special circumstances that clearly outweigh the harm. Some green belt land can count as grey belt, where it does not strongly serve the green belt's purposes. The council decides this in its green belt assessment or on each application, so we do not mark it here.
Read the government guidance ↗
Archaeological priority area: The Archaeological Priority Area covers the southern part of Bromley
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Radon affected area, class 4; Inside the Bromley built-up area; Public transport access: PTAL 1a (very poor), TfL 2023, for the 100 m square; 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 · 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), Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) 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 2

Last sold for £950,000 in April 2026. Detached house, freehold.

8 April 2026£950,000
18 July 2019£830,000

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

Building

Floor area240 m² (2,583 sq ft)
Energy ratingC (70 out of 100), could reach B
PropertyDetached house, 7 habitable rooms
Built1983 to 1990
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, insulated (assumed)

From the energy performance certificate lodged in April 2025, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Other new applications on this street

9 Sept 2026Pending

CONCORDE BUSINESS CENTRE UNITS 1 TO 2, AIRPORT INDUSTRIAL ESTATE, MAIN ROAD, BIGGIN HILL, TN16 3YN

T391 - Ash tree - Fell. T1115 - Ash tree - Fell. SUBJECT TO TPO 744 (8.10.1991...

26/03763/TPO

Important details

Council
Bromley
Application type
Householder planning permission
Postcode
TN16 2HN
Received
22 Jun 2026
Validated
30 Jun 2026
Ward
Darwin
Case officer
Show
Target decision
25 Aug 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Show

Decision outlook

Day 101, past the statutory target. 96% of extensions in Bromley are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 7 Oct 2026.

Day 10145 days past the 56-day target
79%decided within 8 weeks
77%approved
1,434decided in the last year

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

Public comments

No public comments yet.

Last counted 7 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Comments by
24 Jul 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2018 Approved
The Aperfield Inn 311 Main Road Biggin Hill TN16 2HN
3 x externally illuminated (static) freestanding sign posts, 3 x non-illuminated fascia s…
18/05115/ADV
2018 Approved
364 Main Road Biggin Hill TN16 2HN
(PROPOSED LAWFUL DEVELOPMENT CERTIFICATE) Proposed single storey side extension, proposed…
18/03479/PLUD
2018 Approved
364 Main Road Biggin Hill TN16 2HN
Single storey rear extension, extending beyond the rear wall of the house as existing by…
18/03474/HHPA
2017 Refused
364 Main Road Biggin Hill TN16 2HN
Single storey rear extension and contruction of garage. Raise the pitch of the main roof…
17/03222/FULL6
2017 Approved
364 Main Road Biggin Hill TN16 2HN
Loft conversion incorporating rear dormer extension and rooflights to front roofslope. La…
17/01698/PLUD
2017 Approved
364 Main Road Biggin Hill TN16 2HN
Single storey rear extension, extending beyond the rear wall of the house as existing by…
17/01697/HHPA
2016 Refused
378 Main Road Biggin Hill TN16 2HN
Erection of a detached two storey three bedroom dwelling with associated car parking at f…
16/05553/FULL1
2016 Approved
The Aperfield Inn 311 Main Road Biggin Hill TN16 2HN
T1 Hawthorn - Crown lift to 8m.T2 Cherry - Reduce overhanging bough back to fence line.T3…
16/00472/TPO
Bromley
Planning Authority Score
4.4/10
Below average
#178 of 296 councils
Relevant to this application:
Householder decisions

Bromley ranks #143 out of 296 councils for householder decision speed. Bromley is also one of the strictest councils - it refuses more householder applications than almost any other, with only 79% approved vs 90% nationally.

One of the strictest councils
only 79% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Bromley decision statistics
Based on MHCLG data, the year to March 2026
77%
Overall approval rate
Below avg (87%) #276 of 296
79%
Householder approved
Below avg (90%) #280 of 296
66%
Decided in 8 weeks
Above avg (63%) #143 of 296
33%
Extended time limit
Below avg (41%) #72 of 296
63%
Minor dwellings approved
70 decided (1-9 homes)
88%
Major dwellings approved
8 decided (10+ homes)
50%
Change of use approved
42 decided
2,164
Total decisions
500 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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.