20, Alderbury Road, Slough, SL3 8DQ Data via plota.co.uk

P/03387/004 - Certificate Existing (Use/Development) Approved
Admin / procedural

Proposal

Lawful development certificate for an existing loft conversation with rear dorme Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
3 Aug 2026
✓
Consultation
3 Aug 2026
✓
Approved
17 Aug 2026

Approved on 17 Aug 2026 · Delegated · Last checked 18 Aug 2026

Documents

View the documents on the council's website ↗

Site constraints 2

Also on the record
National infrastructure project 1604 m away: M4 Junctions 3 to 12 Smart Motorway; Inside the Slough built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building 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 £575,000 in June 2025. Semi-detached house, freehold.

27 June 2025£575,000

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

Building

Floor area99 m² (1,066 sq ft)
Energy ratingD (64 out of 100), could reach B
PropertySemi-detached house, 5 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

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

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Important details

Council
Slough
Application type
Certificate Existing (Use/Development)
Postcode
SL3 8DQ
Received
3 Aug 2026
Validated
3 Aug 2026
Ward
Langley St. Marys
Case officer
Show
Target decision
28 Sept 2026
Decision
Approved Grant CLU/D;Informatives
Decision date
17 Aug 2026
Decision level
Delegated
Applicant
Show
Agent
Shivaay Designs & Developments ltd

Consultation & key dates

Alt. reference
PP-15129136
Site or press notice
3 Aug 2026
Statutory expiry
7 Sept 2026

Historical activity at this location

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

This property

Previous applications at this address

2025 Withdrawn
Construction of a single storey front extension to form porch, part single storey, part t…
P/03387/001
Within ~100m

Nearby activity

2025 Approved
46, Talbot Avenue, Slough, SL3 8DE
Lawful development certificate for proposed loft conversion into habitable space with rea…
P/05527/002
2025 Approved
52, Alderbury Road, Slough, SL3 8DJ
Lawful development certificate for proposed hip to gable loft conversion with rear dormer.
P/20801/000
2025 Approved
50, Alderbury Road, Slough, SL3 8DJ
Lawful development certificate for a proposed hip to gable loft conversion with rear dorm…
P/10276/001
2024 Approved
54, Alderbury Road, Slough, SL3 8DJ
Lawful development certificate for a proposed hip to gable loft conversion with rear dorm…
P/20623/000
2024 Approved
9, Morley Close, Slough, SL3 8DN
Construction of a single storey rear extension with flat roof
P/19001/001
2024 Approved
49, Talbot Avenue, Slough, SL3 8DE
Construction of a single storey rear extension with 3no roof lights and internal alterati…
P/08071/004
2024 Approved
49, Talbot Avenue, Slough, SL3 8DE
The erection of a single storey rear extension, which would extend beyond the rear wall o…
Y/08071/003
2021 Approved
7, Morley Close, Slough, SL3 8DN
Lawful development certificate for a proposed single storey side extension with pitched r…
P/16462/004
2021 Approved
7, Morley Close, Slough, SL3 8DN
The erection of a single storey rear extension, which would extend beyond the rear wall o…
Y/16462/003
2021 Approved
32, Alderbury Road, Slough, SL3 8DJ
Construction of a single storey side and part rear extension with insertion of garage doo…
P/19424/000
2021 Approved
32, Alderbury Road, Slough, SL3 8DJ
Lawful development for a proposed single storey rear extension and loft conversion with r…
P/19424/001
2021 Approved
40, Talbot Avenue, Slough, SL3 8DE
Lawful development for a proposed single storey rear extension and loft conversion with r…
P/19220/000
2020 Approved
9, Morley Close, Slough, SL3 8DN
Construction of a single storey rear extension with flat roof
P/19001/000
2020 Approved
58, Talbot Avenue, Slough, SL3 8DE
Lawful development certificate for a proposed loft conversion with roof lights.
P/02118/002
2020 Approved
4, Darwin Road, Slough, SL3 8DG
Construction of a single storey front porch
P/18078/000
2020 Approved
8, Morley Close, Slough, SL3 8DN
Construction of a part two storey side and rear extension.
P/05790/002
2019 Approved
6, Darwin Road, Slough, SL3 8DG
The erection of a single storey rear extension, which would extend beyond the rear wall o…
Y/03073/003
2018 Approved
41, Talbot Avenue, Slough, SL3 8DE
Lawful development certificate for a proposed loft conversion with rear dormer and 3No. f…
P/17581/000
2018 Approved
53, Alderbury Road, Slough, SL3 8DJ
Lawful development certificate for a proposed garage conversion into habitable room with…
P/17339/000
2017 Approved
46, Alderbury Road, Slough, SL3 8DJ
Construction of a single storey front porch.
P/03428/001
2016
7, Morley Close, Slough, SL3 8DN
The erection of a single storey rear extension, which would extend beyond the rear wall o…
16462/002
2016 Approved
6, Darwin Road, Slough, SL3 8DG
Lawful development certificate for a proposed rear dormer and conversion of loft to habit…
P/03073/002
2016 Refused
7, Morley Close, Slough, SL3 8DN
The erection of a single storey rear extension, which would extend beyond the rear wall o…
Y/16462/001
2016 Withdrawn
7, Morley Close, Slough, SL3 8DN
The erection of a single storey rear extension, which would extend beyond the rear wall o…
Y/16462/000
2016 Approved
6, Darwin Road, Slough, SL3 8DG
The erection of a single storey rear extension, which would extend beyond the rear wall o…
Y/03073/001
Slough
Planning Authority Score
2.4/10
Poor
#260 of 296 councils
Relevant to this application:
Householder decisions

Slough is slower than most councils at deciding householder applications, ranking #263 out of 296. Slough is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.

One of the strictest councils
only 82% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Slough decision statistics
Based on MHCLG data, the year to March 2026
78%
Overall approval rate
Below avg (87%) #275 of 296
82%
Householder approved
Below avg (90%) #269 of 296
42%
Decided in 8 weeks
Below avg (63%) #263 of 296
39%
Extended time limit
Below avg (41%) #142 of 296
60%
Minor dwellings approved
48 decided (1-9 homes)
50%
Major dwellings approved
4 decided (10+ homes)
40%
Change of use approved
47 decided
617
Total decisions
137 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.