18 Cromwell Grove, London, W6 7RG Data via plota.co.uk

P/2026/02134/HH REGISTERED: Under Consultation

Proposal

Demolition of the existing roof and erection of a new replacement roof comprising of a side dormer roof extension involving an increase in the ridge height by 350mm together with 1no rooflight in the front roofslope and 1no rooflight above the main flat roof at roof level; erection of a rear extension at third floor level, on top of the existing back addition; replacement of the existing window with a door to the rear elevation and to the side of upper ground floor back addition; alterations to the roof of lower ground floor back addition to include the replacement of existing rooflight with a walk on flat rooflight and erection of railings around the flat roof in connection with the formation of a roof terrace; increasing the height of part of the rear garden fencing facing eastern elevation; reconfiguration of the rear garden, including the partial lowering of the raised section of the garden, together with associated hard and soft landscaping works. Data via plota.co.uk

View original council record ↗Last checked

Application progress

Validated
1 Sept 2026
Received
2 Sept 2026
Decision
Expected by 27 Oct 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision between 27 Oct 2026 and 12 Nov 2026, from Hammersmith and Fulham's recent extensions. Comments are open until 30 Sept 2026.

Comment on this application ↗

Documents 16

All documents on the council site ↗

Site constraints 4

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 ↗
Melrose conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Air quality management area: Hammersmith and Fulham AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
Inside the Hammersmith and Fulham built-up area.
Not affected
Not green belt · 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

Postcode
W6 7RG
Received
2 Sept 2026
Validated
1 Sept 2026
Ward
Addison
Case officer
Show
Applicant
Show
Agent
Glen Christen / Bonnystreet (Town) Planning Limited

Decision outlook

Day 11 of the 56-day target. Hammersmith and Fulham usually decides extensions by day 65.

Day 1154 days to the predicted decision (day 65)
44%decided within 8 weeks
98%approved
244decided in the last year

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

Consultation & key dates

Consultation
2 Sept 2026
Comments by
30 Sept 2026
Site or press notice
9 Sept 2026
Statutory expiry
27 Oct 2026
Hammersmith and Fulham
Planning Authority Score
3.7/10
Below average
#210 of 296 councils
Relevant to this application:
Householder decisions

Hammersmith and Fulham is one of the slowest councils in England for householder decisions, ranking #281 out of 296. The council extends the time limit on 63% of applications - one of the highest rates in England. Expect your application to take longer than the standard deadline. Householder applications are more likely to be approved here than most councils, with a 99% approval rate vs 90% nationally.

Among the slowest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Hammersmith and Fulham decision statistics
Based on MHCLG data, the year to March 2026
95%
Overall approval rate
Above avg (87%) #20 of 296
99%
Householder approved
Above avg (90%) #4 of 296
33%
Decided in 8 weeks
Below avg (63%) #281 of 296
63%
Extended time limit
Above avg (41%) #275 of 296
97%
Minor dwellings approved
209 decided (1-9 homes)
100%
Major dwellings approved
1 decided (10+ homes)
92%
Change of use approved
37 decided
1,321
Total decisions
60 refused in the year to March 2026