Astrea Plomer Green Lane Downley Buckinghamshire HP13 5XN Data via plota.co.uk

Decided PL/25/3560/FA
Council
Buckinghamshire 1.3/10
Date received
around 7 Oct 2025
Date validated
7 Oct 2025
Postcode
HP13 5XN

Description

Removal of front dormer, main hipped plain tiled roof, chimney, rear conservatory, detached summerhouse and side timber shed, construction of new gable ended roof with front dormer and conservation roof light, 3 x rear dormer windows, conversion of integral garage to residential, single storey front and rear extensions and new patio with central steps down to rear garden Data via plota.co.uk

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Last checked

Associated applications 2

Site constraints 9

Chilterns National Landscape
Great weight to conserving the landscape; major development restricted.
Previously an area of outstanding natural beauty, which is still the designation in law. Since 2023 authorities must seek to further its purpose, not merely have regard to it.
Downley Common conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Article 4 direction
Former Wycombe Rural District - Poultry Production. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
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 2; 6 listed buildings within 150 m; Inside the Downley built-up area; Green belt 19 m away: London; 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 7 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 £625,000 in July 2025. Detached house, freehold.

23 July 2025£625,000

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

Building

Floor area87 m² (936 sq ft)
Energy ratingD (55 out of 100), could reach C
PropertyDetached bungalow, 3 habitable rooms
Built1967 to 1975
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in November 2024, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

21 Aug 2026Pending

22 Plomer Green Avenue Downley Buckinghamshire HP13 5LW

Certificate of lawfulness for the proposed garage conversion.

PL/26/06762/SA

Nearby new applications

22 Oct 2026Pending

20 Commonside Downley Buckinghamshire HP13 5XG

Fell 1 x Plum tree and grub out roots.

PL/26/08625/KA
19 Oct 2026Pending

1 The Stables Downley Common Downley Buckinghamshire HP13 5YN

Householder application for the erection of a garden room.

PL/26/06854/FA
9 Oct 2026Pending

29 Grays Lane Downley Buckinghamshire HP13 5TZ

Certificate of Lawfulness for proposed siting of a single unit mobile home.

PL/26/08215/SA
28 Sept 2026Pending

Elm Bank Moor Lane Downley Buckinghamshire HP13 5YP

Certificate of Lawfulness for proposed installation of solar panels.

PL/26/07419/SA
7 Aug 2026Approved

Downley Common Downley Buckinghamshire

2x Hawthorn - Fell

PL/26/06358/KA

Historical activity at this location

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

Within ~100m

Nearby activity

2025
Diamond Cottage Moor Lane Downley Buckinghamshire HP13 5YP
G1 group of Holly, Hawthorne and Plums (behind the garage bordering the common) reduce in…
PL/25/4537/KA
2025
Tilbury Cottage 3 Moor Lane Downley Buckinghamshire HP13 5YP
Fell 1 x Hawthorn on rear boundary
PL/25/4369/KA
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
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.

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.