Planning application
21 Cobham Road, Walthamstow, London, E17 4ED
Works: Extension Loft or dormer Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof (with French doors and safety railings), together with installation of three roof lights to front roof slope.
As published by the council, reference 261555
Application record
- Reference
- 261555
- Type
- Certificate of Lawful Development - Proposed
- Received
- 23 Jun 2026
- Ward
- Upper Walthamstow
- Postcode
- E17 4ED
Site history
Applications at this address on the Waltham Forest register
This site has had 2 applications since 2026.
-
261556 Status unknown
21 Cobham Road, Walthamstow, London, E17 4ED
Lawful Development Certificate (Proposed) - Construction of a single storey outbuilding within the rear garden.
Timeline
Dates from the published record
-
23 Jun 2026
Received by Waltham Forest
-
25 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 18 August 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Checking the current position
The published feed does not show a live status for this application; the register on Waltham Forest's own portal holds the authoritative version.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
21 Cobham Road, Walthamstow, London, E17 4ED
Decision due ~18 Aug
Lawful Development Certificate (Proposed) - Construction of a single storey outbuilding within the rear garden.
Status unknown Lawful developmentSmall domestic -
23 Cobham Road, Walthamstow, London, E17 4ED
Decision due ~18 Aug
Lawful Development Certificate (Proposed) - Construction of a single storey outbuilding within the rear garden.
Status unknown Lawful developmentSmall domestic -
16 Guildford Road, Walthamstow, London, E17 4DZ
Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximum height of 4.00m and an eaves height of 3.00m.
Refused Prior approval ExtensionSmall domestic -
16 Guildford Road, Walthamstow, London, E17 4DZ
Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximum height of 4.00m and an eaves height of 3.00m.
Granted Prior approval ExtensionSmall domestic -
157 Hale End Road, Walthamstow, London, E17 4DX
Decision due ~27 Jul
Construction of a single storey rear wrap-around extension.
Status unknown Householder ExtensionSmall domestic -
49 Guildford Road, Walthamstow, London, E17 4EA
Lawful Development Certificate (Proposed) – Construction of a single storey rear extension.
Granted Lawful development ExtensionSmall domestic
Other lawful development applications
In Waltham Forest
-
261617 Status unknown
9 Fulready Road, Leyton, London, E10 6DT
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof, and roof extension above two storey outrigger, with installation of three roof lights to front roof slope.
-
261619 Status unknown
89 Marmion Avenue, Chingford, London, E4 8EJ
Lawful Development Certificate (Proposed) – Construction of a single storey rear extension.
-
261609 Status unknown
30 Warboys Crescent, Chingford, London, E4 9HR
Lawful Development Certificate (Proposed) – Construction of a single storey rear extension.
-
261614 Status unknown
1 Sopwith Avenue, E17 6TD
Lawful Development Certificate (Proposed) - temporary removal of facade elements to allow access to the internal cavities, where insulation and cavity barriers (fire-stopping components within the wall build-up) will be replaced. Once complete, all facade materials will be reinstated, with any damaged items replaced to match the existing finish.
-
261607 Status unknown
26A Hervey Park Road, Walthamstow, London, E17 6LJ
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof, together with installation of two roof lights to front roof slope.