Rookwood 1 Old Marsh Lane Dorney Reach Buckinghamshire SL6 0DZ Data via plota.co.uk

PL/26/00842/FA - Full Application Registered
Extensions & alterations

Proposal

Part-single/part-two storey rear extension and loft conversion incorporating rear dormer. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
5 Mar 2026
✓
Consultation
9 Mar 2026
Decision
Expected by 30 Apr 2026

Under consideration

No decision has been issued yet. Plota predicted a decision around 9 Oct 2026; it is now day 218.

The consultation period closed on 30 Mar 2026.

Documents 3

Statements & assessments 2

PDF FLOOD RISK ASSESSMENT Additional Information · 5 Mar 2026 View ↗ PDF ECOLOGY AND TREES CHECKLIST Additional Information · 2 Feb 2026 View ↗

Application forms 1

PDF APPLICATION FORM Application Form and Certificate · 3 Mar 2026 View ↗

All documents on the council site ↗

Site constraints 6

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 ↗
Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
National infrastructure project 38 m away: M4 Junctions 3 to 12 Smart Motorway
The site is 38 m from the project boundary. Highway, decided. The project page says whether consent was granted.
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Also on the record
Inside the Dorney Reach built-up area; Air quality management area 87 m away: South Bucks AQMA; 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
No listed building at the site · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate 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 £1,350,000 in December 2024. Detached house, freehold.

18 December 2024£1,350,000

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

Building

Floor area169 m² (1,819 sq ft)
Energy ratingD (64 out of 100), could reach B
PropertyDetached house, 8 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in August 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
Full Application
Postcode
SL6 0DZ
Received
5 Mar 2026
Validated
5 Mar 2026
Ward
Burnham
Parish
Dorney Parish Council
Case officer
Show
Target decision
30 Apr 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Landmark Architectural Services Ltd

Decision outlook

Day 218, past the statutory target. 84% of extensions in Buckinghamshire are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 26 Sept 2026.

Day 218162 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.

5 neighbours consulted · Last counted 26 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Neighbours
9 Mar 2026
Consultation
9 Mar 2026
Comments by
30 Mar 2026
Statutory expiry
30 Apr 2026
Env. assessment
No

Historical activity at this location

3 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025 Approved
Certificate of lawfulness application for loft conversion to habitable space. Works inclu…
PL/25/2792/SA
2025
The erection of a single storey rear extension, which would extend beyond the rear wall o…
PL/25/4257/PNE
2025 Refused
The erection of a single storey rear extension, which would extend beyond the rear wall o…
PL/25/2793/PNE
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.