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Planning application

PA26/1520

28, Upper Grotto Road, Twickenham, TW1 4NF

Awaiting decision Richmond upon Thames Section 192 Permitted Development

Proposal

Installation of air conditioning heat pump split system.

As published by the council, reference PA26/1520

Timeline

Dates from the published record

  1. 5 May 2026

    Received by Richmond upon Thames

  2. 26 May 2026

    Validated

    Checked as complete and ready for consideration.

  3. 26 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

  • 05/3795/PS192 Refused

    69 Heath Gardens Twickenham Richmond Upon Thames TW1 4LY

    Rear mansard roof to provide an additional bedroom.

    16 Dec 2005 54m away Prior approval
  • 05/3870/HOT Granted

    69 Heath Gardens Twickenham Richmond Upon Thames TW1 4LY

    Proposed single storey rear and flank association.

    23 Dec 2005 54m away Householder
  • 06/0617/PS192 Granted

    69 Heath Gardens Twickenham Richmond Upon Thames TW1 4LY

    Proposed Loft Conversion With Rear Dormer.

    27 Feb 2006 54m away Prior approval
  • 06/1092/PS192 Granted

    69 Heath Gardens Twickenham Richmond Upon Thames TW1 4LY

    Proposed loft conversion with rear dormer.

    5 Apr 2006 54m away Prior approval
  • PA26/1828 Granted

    41 Upper Grotto Road Twickenham TW1 4NG

    Dormer roof extension.

    27 May 2026 59m away Householder
  • 05/3799/HOT Granted

    1 Radnor Gardens Twickenham Richmond Upon Thames TW1 4NA

    Proposed Single Storey Rear Extension.

    19 Dec 2005 73m 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