Smiths Cottage Under The Wood Bisham Marlow SL7 1RX Data via plota.co.uk

26/02349/FULL - Full Awaiting decision
Extensions & alterations

Proposal

Single storey rear extension, alteration to fenestration and new external terrace with steps. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
24 Sept 2026
✓
Validated
1 Oct 2026
Decision
Expected by 25 Nov 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 23 Nov 2026, from Windsor and Maidenhead's recent extensions.

Comments are open until 3 Nov 2026

Comment on this application ↗

Documents 7

Statements & assessments 3

PDF Planning statement Planning Statement · 5 Oct 2026 View ↗ PDF Design, access, heritage & ecology statement Design and Access Statement · 24 Sept 2026 View ↗ PDF Flood risk assessment Supporting Information - Flood Risk · 24 Sept 2026 View ↗

Application forms 1

PDF Application form redacted Application Forms · 24 Sept 2026 View ↗

Consultation & comments 1

PDF Neighbour notification list Neighbour Notification List · 7 Oct 2026 View ↗

Other documents 2

PDF History log Property History · 7 Oct 2026 View ↗ PDF 3.00 Existing site photos Photographs · 24 Sept 2026 View ↗

All documents on the council site ↗

Site constraints 10

Grade II listed: Old Beams Cottage
List entry 1155191 · 1 m away · 1 more listed building within 150 m (1 Grade II)
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 the other one with distances
Historic England ↗
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 ↗
In flood zones plus climate change
Inside the extent flood zones 2 and 3 could reach with climate change: the Central allowance for the 2080s on rivers, the Upper End allowance for sea level rise to 2125. From rivers. Defences are not counted.
The Environment Agency flood map for planning. Councils use it to decide when a flood risk assessment and the sequential test are needed. It is indicative and does not show whether a particular property will flood.
Flood map ↗
Special area of conservation 32 m away: Chilterns Beechwoods
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Agricultural land, grade 4
Poor quality farmland, not best and most versatile. Source: the Predictive Agricultural Land Classification Map (Defra and Natural England, 2025; the Welsh Government's Predictive ALC Map 2 in Wales), a model rather than a site survey. Natural England's Provisional ALC map (1:250,000, 1970s), which most planning maps still show, had this area as grade 2. The predicted grade is Defra's current estimate; only a site survey settles it.
Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.
SSSI 32 m away: Bisham Woods SSSI
Natural England may need consulting, depending on what is proposed.
Sites of special scientific interest are the best wildlife and geological sites in the country. Development likely to harm one is rarely permitted.
Habitat network: Other Priority Habitats - NEZ
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Public restricted byway 26 m away
Matters where it crosses or adjoins the site: obstructing a path without a diversion order is an offence, and work cannot start until the order is confirmed.
Compiled from highway authority data, not the legal definitive map. A few authorities have not published, so no path shown is not proof there is none.
Also on the record
Radon affected area, class 2; Priority habitat 10 m away: No main habitat but additional habitats present.
Not affected
Outside flood zones 2 and 3 · No scheduled monument at the site

Checked on 9 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.

Building

Floor area93 m² (1,001 sq ft)
Energy ratingE (48 out of 100), could reach C
PropertyMid-terrace house, 5 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, oil
WallsSolid brick, as built, no insulation (assumed)

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

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Important details

Council
Windsor and Maidenhead
Application type
Full
Postcode
SL7 1RX
Received
24 Sept 2026
Validated
1 Oct 2026
Ward
Bisham And Cookham
Parish
Bisham Parish
Case officer
Show
Target decision
25 Nov 2026
Applicant
Show
Agent
Show

Decision outlook

Day 28 of the 56-day target. Windsor and Maidenhead usually decides extensions by day 53.

Day 2828 days to the 56-day target
76%decided within 8 weeks
75%approved
862decided in the last year

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

Consultation & key dates

Alt. reference
PP-15245664
Planning Portal ref
PP-15245664
Comments by
3 Nov 2026
Statutory expiry
25 Nov 2026
Env. assessment
No
Windsor and Maidenhead
Planning Authority Score
5.3/10
Average
#135 of 296 councils
Relevant to this application:
Householder decisions

Windsor and Maidenhead is faster than most councils at deciding householder applications, ranking #82 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Windsor and Maidenhead is also one of the strictest councils - it refuses more householder applications than almost any other, with only 74% approved vs 90% nationally.

One of the strictest councils
only 74% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Windsor and Maidenhead decision statistics
Based on MHCLG data, the year to March 2026
72%
Overall approval rate
Below avg (87%) #293 of 296
74%
Householder approved
Below avg (90%) #294 of 296
75%
Decided in 8 weeks
Above avg (63%) #82 of 296
28%
Extended time limit
Below avg (41%) #47 of 296
44%
Minor dwellings approved
156 decided (1-9 homes)
96%
Major dwellings approved
27 decided (10+ homes)
64%
Change of use approved
25 decided
1,530
Total decisions
434 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

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.