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Planning application

30 Cassiobury Road, Walthamstow, London, E17 7JF

Status unknown Waltham Forest 260661 Certificate of Lawful Development - Proposed

Works: Extension Loft or dormer

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, and roof extension above two storey outrigger, with installation of two roof lights to front roof slope.

As published by the council, reference 260661

Application record

Reference
260661
Type
Certificate of Lawful Development - Proposed
Received
12 Mar 2026
Ward
St James
Postcode
E17 7JF

Timeline

Dates from the published record

  1. 12 Mar 2026

    Received by Waltham Forest

  2. 10 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 7 May 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

  • 2B Morland Road, Walthamstow, London, E17 7JB

    260161 Submitted 21 Jan 2026 60m away

    Construction of a single storey wraparound rear extension and installation of a air source heat pump.

    Granted Householder Extension
    Small domestic
  • 2b Morland Road, Walthamstow, London, E17 7JB

    252317 Submitted 1 Oct 2025 60m away

    Construction of a single storey wraparound rear extension and installation of a air source heat pump.

    Refused Householder Extension
    Small domestic
  • 151a Coppermill Lane, Walthamstow, London, E17 7HD

    252597 Submitted 4 Nov 2025 82m away

    Continued use of the first floor and roof space as a House in Multiple Occupation (HMO) (Use Class C4) for up to 4 people.

    Refused Full applications
  • 54 Salop Road, Walthamstow, London, E17 7HT

    252799 Submitted 28 Nov 2025 174m away

    Lawful Development Certificate (Proposed) - Construction of a replacement dormer roof extension to main rear roof, and roof extension above two storey outrigger. Together with installation of three roof lights to front roof slope.

    Granted Lawful development Extension Loft or dormer
  • 84 Salop Road, Walthamstow, London, E17 7HT

    252409 Submitted 13 Oct 2025 174m away

    Decision due ~8 Dec

    Prior approval for the construction of a single storey rear infill extension which would extend 3.50m beyond the rear wall of the existing dwelling, a maximum height of 3.50m and an eaves height of 2.40m.

    Status unknown Prior approval Extension
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  • 28 Salop Road, Walthamstow, London, E17 7HT

    070031 Submitted 25 Apr 2007 174m away

    Demolition of side garage. Erection of two storey 1x bed dwellinghouseas shown by drawing number KD/PP/S0038-R4 received on 25th April 2007.

    Refused Full applications Demolition 2 docs

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.

    1 Jul 2026 Lawful development
  • 261619 Status unknown

    89 Marmion Avenue, Chingford, London, E4 8EJ

    Lawful Development Certificate (Proposed) – Construction of a single storey rear extension.

    1 Jul 2026 Lawful development
  • 261609 Status unknown

    30 Warboys Crescent, Chingford, London, E4 9HR

    Lawful Development Certificate (Proposed) – Construction of a single storey rear extension.

    30 Jun 2026 Lawful development
  • 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.

    30 Jun 2026 Lawful development
  • 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.

    29 Jun 2026 Lawful development