33 St Mary Road, Walthamstow, London, E17 9RF Data via plota.co.uk
Proposal
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof (with French doors and safety railings), together with installation of two roof lights to front roof slope. Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet. Plota predicts a decision around 3 Nov 2026, from Waltham Forest's recent extensions.
Documents 5
Plans & drawings 4
Site constraints 6
Checked on 15 September 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 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.
Every application in Waltham Forest - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Waltham Forest
- Application type
- Certificate of Lawful Development - Proposed
- Postcode
- E17 9RF
- Received
- 9 Sept 2026
- Validated
- 9 Sept 2026
- Ward
- Hoe Street
- Case officer
- Show
- Target decision
- 4 Nov 2026
- Decision level
- Delegated
- Applicant
- Show
- Agent
- Expansion Group
Decision outlook
Day 25 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
- 4 Nov 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.
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33 St Mary Road, Walthamstow, London, E17 9RF
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