18 Cromwell Grove, London, W6 7RG Data via plota.co.uk
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
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision between 5 Nov 2026 and 24 Nov 2026, from Hammersmith and Fulham's recent extensions.
Documents 17
Statements & assessments 3
Plans & drawings 8
Application forms 2
Other documents 4
Site constraints 6
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) 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 £2,487,500 in February 2026. Terraced house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in August 2019, the latest held for this property. The building may have changed since. View the certificate
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Important details
- Council
- Hammersmith and Fulham
- Application type
- Householder Application
- Postcode
- W6 7RG
- Received
- 17 Aug 2026
- Validated
- 1 Sept 2026
- Ward
- Addison
- Case officer
- Show
- Applicant
- Show
- Agent
- Glen Christen / Bonnystreet (Town) Planning Limited
Decision outlook
Day 58 of the 56-day target. Hammersmith and Fulham usually decides extensions by day 75.
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
Historical activity at this location
26 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
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.
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.
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18 Cromwell Grove, London, W6 7RG
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The consultation period closed on 30 Sept 2026.