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Planning application

PA26/2570

23, Copthall Gardens, Twickenham, TW1 4HH

Awaiting decision Richmond upon Thames Section 192 Permitted Development

Proposal

Certificate of Lawful Development for the construction of a rear roof dormer and the installation of three rooflights to the front roof slope.

As published by the council, reference PA26/2570

Timeline

Dates from the published record

  1. 23 Jul 2026

    Received by Richmond upon Thames

  2. 28 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 30 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Richmond upon Thames for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About prior approval applications

How this application type works

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

Nearby applications

Within 500 metres

  • PA26/1624 Granted

    19, Copthall Gardens, Twickenham, TW1 4HH

    Removal of existing extension and construction of a new single storey rear extension.

    11 May 2026 13m away Householder
  • 05/3120/HOT Granted

    38 Copthall Gardens Twickenham Richmond Upon Thames TW1 4HJ

    Single storey side extension.

    24 Oct 2005 44m away Householder
  • 20/2542/HOT Granted

    5 Copthall Gardens Twickenham TW1 4HH

    Single storey rear extension

    11 Sep 2020 62m away Householder
  • 06/0280/HOT Granted

    14 Clifden Road Twickenham Richmond Upon Thames TW1 4LX

    Erection of single storey rear extension.

    3 Feb 2006 72m away Householder
  • 05/2632/PS192 Granted

    6 Clifden Road Twickenham Richmond Upon Thames TW1 4LX

    Single storey rear extension and demolition of existing rear addition and shed to accommodate new proposals.

    31 Aug 2005 73m away Prior approval
  • PA26/1061 Refused

    49 Copthall Gardens Twickenham TW1 4HH

    Single storey rear extension

    26 Mar 2026 86m away Householder

In Richmond upon Thames

  • PA26/2637 Awaiting decision

    17 Kingsway Mortlake London SW14 7HL

    Rear L Shaped dormer with roof lights on front slope

    29 Jul 2026 Prior approval
  • PA26/2643 Awaiting decision

    22, Michelham Gardens, Twickenham, TW1 4SB

    Proposed loft dormer conversion, internal alterations and addition of Velux to front roof slope.

    29 Jul 2026 Prior approval
  • PA26/2618 Awaiting decision

    Grove Cottage, Lower Teddington Road, Hampton Wick, Kingston Upon Thames, KT1 4HJ

    Erection of a rear garden studio building overlooking the Thames River.

    28 Jul 2026 Prior approval
  • PA26/2615 Awaiting decision

    30, Jubilee Avenue, Twickenham, TW2 6JB

    Loft conversion with roof extension and proposed out building in the rear garden.

    27 Jul 2026 Prior approval
  • PA26/2300 Granted

    16 Enmore Gardens East Sheen London SW14 8RF

    Single storey rear extension, 5m in depth from original house, 3.8m in height and 3m at the eaves.

    30 Jun 2026 Prior approval