21 Coppermill Road Wraysbury Staines TW19 5NU Data via plota.co.uk
26/01759/FULL - Full
Awaiting decision
Proposal
Erection of an outbuilding ancillary to the main dwelling Data via plota.co.uk
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View original council record ↗Last checked
Application progress
✓
Received
27 Jul 2026
Decision
Expected by 20 Sept 2026
This application is under consideration - no decision has been issued yet. Plota predicts a decision around 19 Sept 2026, from Windsor and Maidenhead's recent extensions. The consultation period closed on 31 Aug 2026.
Documents 6
Statements & assessments 2
Application forms 2
Consultation & comments 1
Other documents 1
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.
Local nature reserve 84 m away: South West London Waterbodies
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.
SSSI 84 m away: Wraysbury Reservoir 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 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Horton (Windsor and Maidenhead) built-up area; Air quality management area 21 m away: Spelthorne AQMA.
Not affected
Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site
Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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.
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Important details
- Council
- Windsor and Maidenhead
- Application type
- Full
- Postcode
- TW19 5NU
- Received
- 27 Jul 2026
- Validated
- 27 Jul 2026
- Ward
- Datchet Horton And Wraysbury
- Parish
- Horton Parish
- Case officer
- Show
- Target decision
- 20 Sept 2026
- Applicant
- Show
- Agent
- Show
Decision outlook
Day 49 of the 56-day target. Windsor and Maidenhead usually decides extensions by day 54.
Day 497 days to the 56-day target
78%decided within 8 weeks
75%approved
640decided 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-15091110
- Comments by
- 31 Aug 2026
- Statutory expiry
- 20 Sept 2026
- Env. assessment
- No
Historical activity at this location
31 previous applications on record - archival context, not part of the live application.
This property
Previous applications at this address
2024
Refused
Construction of 2no. dwellings, cycle storage and a new drop kerb following the demolitio…
2020
Approved
Certificate of lawfulness to determine whether the proposed x1 side dormer and x2 new roo…
2020
Withdrawn
Certificate of lawfulness to determine whether the proposed x1 side dormer and x5 rooflig…
2020
Refused
Certificate of lawfulness to determine whether the proposed x1 side dormer and x5 rooflig…
2020
Approved
Single storey rear extension with raised platform and steps
2016
Approved
Single storey rear extension, hip to gable roof extension and rear dormer
Within ~100m
Nearby activity
2025
Withdrawn
24 Coppermill Road Wraysbury Staines TW19 5NT
New front porch.
2024
Refused
28 Coppermill Road Wraysbury Staines TW19 5NT
1no. detached outbuilding.
2024
Approved
24 Coppermill Road Wraysbury Staines TW19 5NT
Single storey rear extension no greater than 6.00m in depth, 3.23m high with an eaves hei…
2023
Refused
24 Coppermill Road Wraysbury Staines TW19 5NT
Single storey rear extension no greater than 6.00m in depth, 3.23m high with an eaves hei…
2022
Approved
18 Coppermill Road Wraysbury Staines TW19 5NT
Retention of rear single storey extension at a reduced size following demolition of part…
2022
Approved
12 Coppermill Road Wraysbury Staines TW19 5NT
New first floor with undercoft, raising of the ridge and alterations to fenestration foll…
2022
Approved
24 Coppermill Road Wraysbury Staines TW19 5NT
Single storey rear extension and alterations to fenestration following part demolition of…
2022
Approved
24 Coppermill Road Wraysbury Staines TW19 5NT
Single storey detached outbuilding.
2021
Decided
18 Coppermill Road Wraysbury Staines TW19 5NT
Single storey rear extension and part demolition of the existing garage (Part Retrospecti…
2021
Approved
23 Coppermill Road Wraysbury Staines TW19 5NU
Conversion of the existing double garage to an ancillary granny annexe.
2021
Approved
8 Coppermill Road Wraysbury Staines TW19 5NT
Installation of electronic vehicular entrance and exit roller gates and new fence panels…
2021
Approved
26 Coppermill Road Wraysbury Staines TW19 5NT
Replacement and raising of roof, replacement wall frames and alterations to fenestration…
2019
Refused
18 Coppermill Road Wraysbury Staines TW19 5NT
Single storey rear extension - part retrospective.
2019
Approved
19 Coppermill Road Wraysbury Staines TW19 5NU
Single storey rear extension.
2019
Approved
17 Coppermill Road Wraysbury Staines TW19 5NU
Single storey rear extension no greater than 7.75m in depth, 3.7m high with an eaves heig…
2018
Refused
17 Coppermill Road Wraysbury Staines TW19 5NU
Single storey rear extension and side dormer
2018
Refused
17 Coppermill Road Wraysbury Staines TW19 5NU
Single storey side and rear extension with the insertion of a side dormer ( as amended 07…
2018
Approved
28 - 30 Coppermill Road Wraysbury Staines
Construction of 2 x detached dwellings with ancillary parking.
2017
Withdrawn
17 Coppermill Road Wraysbury Staines TW19 5NU
Single storey rear extension no greater than 7.8m depth, 3.6m high and an eaves height of…
2017
Withdrawn
17 Coppermill Road Wraysbury Staines TW19 5NU
x1 side facing dormer
2017
Approved
28 - 30 Coppermill Road Wraysbury Staines
Construction of 2 x semi-detached bungalows following demolition of existing bungalows
2017
Withdrawn
28 - 30 Coppermill Road Wraysbury Staines
Construction of a pair of semi detached chalet style bungalows following demolition of ex…
2017
Refused
28 - 30 Coppermill Road Wraysbury Staines
Demolition of the existing x2 dwellings
2016
Approved
19 Coppermill Road Wraysbury Staines TW19 5NU
Single storey rear extension no greater than 7.8m depth, 3.0m high and an eaves height of…
2025
Approved
28 Coppermill Road Wraysbury Staines TW19 5NT
Certificate of lawfulness to determine whether the proposed detached outbuilding incident…
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
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21 Coppermill Road Wraysbury Staines TW19 5NU
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