May Cottage Grubwood Lane Cookham Maidenhead SL6 9UD Data via plota.co.uk

26/01948/FULL - Full Awaiting decision
DemolitionExtensions & alterations

Proposal

Relocation of the front entrance door, replacement front canopy with 1no. dormer above, single storey rear extension, single storey front/side extension with new steps, 1no. additional side dormer, 1no. rear dormer and alterations to fenestration and external finish following demolition of existing elements. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
7 Aug 2026
Decision
Expected by 1 Oct 2026

Under consideration

No decision has been issued yet. Plota predicted a decision around 9 Oct 2026; it is now day 63.

The consultation period closed on 8 Sept 2026.

Documents 9

Statements & assessments 5

PDF 2111-p-e Proposed ecology plan Supporting Information - Ecology · 7 Aug 2026 View ↗ PDF Ecology and trees checklist Supporting Information - Trees · 7 Aug 2026 View ↗ PDF Emergence bat survey Supporting Information - Ecology · 7 Aug 2026 View ↗ PDF Planning statement Planning Statement · 7 Aug 2026 View ↗ PDF Bat scoping survey Supporting Information - Ecology · 7 Aug 2026 View ↗

Application forms 2

PDF Application form redacted Application Forms · 7 Aug 2026 View ↗ PDF Cil form 1 CIL Documents · 7 Aug 2026 View ↗

Consultation & comments 1

PDF Neighbour notification list Neighbour Notification List · 12 Aug 2026 View ↗

Other documents 1

PDF History log Property History · 12 Aug 2026 View ↗

All documents on the council site ↗

Site constraints 8

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 ↗
Special area of conservation 34 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 1
Best and most versatile land (grades 1, 2 and 3a). 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. A site survey can differ.
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 34 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: Network Enhancement Zone 1
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; Priority habitat 33 m away: Deciduous woodland; Open access land 47 m away: Access Land - Combined Open Country, Registered Common Land and Section 16 Dedicated Land. MoD Byelaw, Section 28 Exclusions, Racecourses and Aerodromes and ECP Margin have been removed..
Not affected
Outside flood zones 2 and 3 · 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 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 2

Last sold for £1,850,000 in December 2022. Detached house, freehold.

14 December 2022£1,850,000
16 April 2003£875,000

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

Building

Floor area242 m² (2,605 sq ft)
Energy ratingD (64 out of 100), could reach C
PropertyDetached house, 8 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in September 2020, 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

24 Jul 2026Pending

Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

Certificate of lawfulness to determine whether the proposed garage conversion, a...

26/01823/CPD

Nearby new applications

19 Aug 2026Pending

Pudseys Spring Lane Cookham Dean Maidenhead SL6 9PN

Part demolition, reconstruction and extension to southern element of Pudseys.

26/02058/FULL
17 Jul 2026Approved

Oberland Bedwins Lane Cookham Maidenhead SL6 9PU

Single storey side/rear extension and alterations to fenestration.

26/01751/FULL
24 Jul 2026Pending

Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

Certificate of lawfulness to determine whether the proposed garage conversion, a...

26/01823/CPD
24 Jul 2026Pending

Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

Single storey side/rear extension no greater than 8.00m in depth, 4.00m high wit...

26/01822/PDXL

Important details

Council
Windsor and Maidenhead
Application type
Full
Postcode
SL6 9UD
Received
7 Aug 2026
Validated
7 Aug 2026
Ward
Bisham And Cookham
Parish
Bisham Parish
Target decision
1 Oct 2026
Applicant
Show
Agent
Show

Decision outlook

Day 63, past the statutory target. 91% of demolitions in Windsor and Maidenhead are decided within thirteen weeks, which runs to 6 Nov 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 7 Oct 2026.

Day 637 days past the 56-day target
77%decided within 8 weeks
74%approved
194decided in the last year

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

Consultation & key dates

Alt. reference
PP-15139240
Planning Portal ref
PP-15139240
Comments by
8 Sept 2026
Statutory expiry
1 Oct 2026
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2025 Approved
Certificate of lawfulness to determine whether the proposed single storey rear extension…
25/03367/CPD
2025 Approved
Certificate of lawfulness to determine whether the proposed single storey side extension…
25/03029/CPD
2025 Refused
Certificate of lawfulness to determine whether the proposed single storey rear extension…
25/02166/CPD
Within ~100m

Nearby activity

2022 Approved
Fernie Cottage Grubwood Lane Cookham Maidenhead SL6 9UD
Garage conversion, part two storey, part first floor rear extension and alterations to fe…
22/02843/FULL
2022 Approved
Imbers Grubwood Lane Cookham Maidenhead SL6 9UD
Widening of the existing driveway and access and new entrance gates.
22/02572/FULL
2022 Approved
Fernie Cottage Grubwood Lane Cookham Maidenhead SL6 9UD
Certificate of lawfulness to determine whether the proposed garage conversion, and two st…
22/02109/CPD
2022 Approved
Imbers Grubwood Lane Cookham Maidenhead SL6 9UD
Certificate of lawfulness to determine whether the proposed two storey rear extension and…
22/01574/CPD
2021 Approved
Imbers Grubwood Lane Cookham Maidenhead SL6 9UD
Single storey side extension.
21/02618/FULL
2021 Refused
Imbers Grubwood Lane Cookham Maidenhead SL6 9UD
Certificate of lawfulness to determine whether the proposed single storey side extension…
21/02432/CPD
2021 Approved
Imbers Grubwood Lane Cookham Maidenhead SL6 9UD
Certificate of lawfulness to determine whether the proposed outbuilding is lawful.
21/01373/CPD
2021 Refused
Imbers Grubwood Lane Cookham Maidenhead SL6 9UD
Certificate of lawfulness to determine whether the proposed single storey side extension…
21/00204/CPD
2016 Approved
Highfields Grubwood Lane Cookham Maidenhead SL6 9UD
Single storey rear extension and associated works to the roof over the utility room
16/03943/FULL
2016 Approved
Highwood Cottage Grubwood Lane Cookham Maidenhead SL6 9UD
Construction of a part two/part single storey rear extension, a single storey side extens…
16/02291/FULL
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

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.