346 Brettenham Road, Walthamstow, London, E17 5AU Data via plota.co.uk
Proposal
Construction of dormer roof extension to main rear roof, together with installation of three roof lights to front roof slope. Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision around 13 Dec 2026, from Waltham Forest's recent extensions.
Documents 8
Plans & drawings 6
Application forms 1
Site constraints 6
Checked on 20 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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 3
Last sold for £442,000 in June 2020. Flat or maisonette, leasehold.
More than one property is recorded at this address: HM Land Registry does not always give the flat or unit.
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, matched to this application by its address. The building may have changed since. View the certificate
Every application in Waltham Forest - and every UK council - as a live feed, an API, or a bulk CSV export.
Other new applications on this street
147 Brettenham Road, Walthamstow, London, E17 5AX
Construction of dormer roof extension to main rear roof, together with installat...
59 Brettenham Road, Walthamstow, London, E17 5AZ
Construction of a single storey outbuilding within the rear garden.
287 Brettenham Road, Walthamstow, London, E17 5AT
Replacement of two uPVC windows to the front with timber sash windows and replac...
Nearby new applications
147 Brettenham Road, Walthamstow, London, E17 5AX
Construction of dormer roof extension to main rear roof, together with installat...
154 Sturge Avenue, Walthamstow, London, E17 4LE
Change of use from a single dwelling house (Use Class C3) into a House in Multip...
7 Aveling Park Road, Walthamstow, London, E17 4NU
Lawful Development Certificate (Proposed) - Construction of roof extension above...
59 Brettenham Road, Walthamstow, London, E17 5AZ
Construction of a single storey outbuilding within the rear garden.
Important details
- Council
- Waltham Forest
- Application type
- Full Planning
- Postcode
- E17 5AU
- Received
- 16 Oct 2026
- Validated
- 19 Oct 2026
- Ward
- Chapel End
- Case officer
- Show
- Target decision
- 14 Dec 2026
- Applicant
- Show
- Agent
- Show
Decision outlook
Day 9 of the 56-day target. Waltham Forest usually decides extensions by day 55.
Plota live figures for extensions decided by Waltham Forest in the last twelve months, from validation. Waltham Forest decision record →
Consultation & key dates
- Statutory expiry
- 14 Dec 2026
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Waltham Forest is faster than most councils at deciding householder applications, ranking #80 out of 296. Only 22% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Waltham Forest is also one of the strictest councils - it refuses more householder applications than almost any other, with only 79% approved 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.
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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346 Brettenham Road, Walthamstow, London, E17 5AU
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