111, Waterbeach Road, Slough, SL1 3JU Data via plota.co.uk

P/21165/001 - Certificate Proposed (Use/Development) Registered application

Proposal

Lawful development certificate for a proposed hip to gable loft conversion with rear dormer and insertion of window to first floor side elevation Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
29 Sept 2026
✓
Validated
30 Sept 2026
✓
Consultation
30 Sept 2026
Decision
Expected by 24 Nov 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision around 22 Nov 2026, from Slough's recent extensions.

Site constraints 2

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 ↗
Also on the record
Inside the Slough built-up area.
Not affected
Not green belt · No listed building at the site · No scheduled monument at the site

Checked on 1 October 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
Slough
Application type
Certificate Proposed (Use/Development)
Postcode
SL1 3JU
Received
29 Sept 2026
Validated
30 Sept 2026
Target decision
24 Nov 2026
Decision level
Delegated
Applicant
Show
Agent
The White House Design Ltd

Decision outlook

Day 5 of the 56-day target. Slough usually decides extensions by day 53.

Day 551 days to the 56-day target
66%decided within 8 weeks
81%approved
460decided in the last year

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

Consultation & key dates

Alt. reference
PP-15227828
Site or press notice
30 Sept 2026
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