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Planning application

20 The Avenue Chiswick W4 1HT

Granted Old Oak and Park Royal Development Corporation 261255HH Householder

Works: Extension Small domestic

Read from the description, not a valuation. How we read the register

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Single storey rear extension to the existing rear extension including the enlargement of the existing roof terrace above at first floor level, internal and external alterations and general refurbishment of the house. Alterations to the existing services and the installation of an air conditioning condenser unit in the rear garden.

As published by the council, reference 261255HH

Application record

Reference
261255HH
Type
Householder
Status
Granted with Conditions
Decision
Granted As published: Grant with Conditions
Received
23 Mar 2026
Validated
23 Mar 2026
Decided
3 Jul 2026
Ward
Southfield
Decision by
Delegated Decision
Postcode
W4 1HT

Site history

Applications at this address on the Old Oak and Park Royal Development Corporation register

This site has had 4 applications since 2025: 2 approved, 0 refused.

  • 261256LBC Granted

    20 The Avenue Chiswick W4 1HT

    Construction of a single storey rear extension to the existing rear extension including the enlargement of the existing roof terrace above at first floor level, internal and external alterations and general refurbishment of the house. Alterations to the existing services and the installation of an air conditioning condenser unit in the rear garden (Listed Building Consent)

    Decided 3 Jul 2026 Heritage and listed buildings
  • 254708HH Awaiting decision

    20 The Avenue Chiswick W4 1HT

    Construction of single storey garden outbuilding with basement level; and replacement boundary treatment facing Queen Anne's Gardens and the installation of an air conditioning condenser unit

    Submitted 15 Dec 2025 Householder
  • 254709LBC Awaiting decision

    20 The Avenue Chiswick W4 1HT

    Construction of single storey garden outbuilding with basement level; and replacement boundary treatment facing Queen Anne's Gardens and the installation of an air conditioning condenser unit (Listed Building Consent)

    Submitted 15 Dec 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 23 Mar 2026

    Received by Old Oak and Park Royal Development Corporation

  2. 3 Jul 2026

    Decision issued: Grant with Conditions

  3. 3 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Alice Poole Architects Agent, an architecture practice

25 applications on PlanIndex · across 2 councils · 69% granted

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Documents

Plans, drawings, consultee responses and the officer's report

24 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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Open the documents

What this grant of permission means

Old Oak and Park Royal Development Corporation granted permission on 3 July 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 20 The Avenue Chiswick W4 1HT

    261256LBC Submitted 23 Mar 2026 50 yards away

    Construction of a single storey rear extension to the existing rear extension including the enlargement of the existing roof terrace above at first floor level, internal and external alterations and general refurbishment of the house. Alterations to the existing services and the installation of an air conditioning condenser unit in the rear garden (Listed Building Consent)

    Granted Heritage and listed buildings Extension 27 docs
    Small domestic

  • 20 The Avenue Chiswick W4 1HT

    261255HH Submitted 23 Mar 2026 50 yards away

    Single storey rear extension to the existing rear extension including the enlargement of the existing roof terrace above at first floor level, internal and external alterations and general refurbishment of the house. Alterations to the existing services and the installation of an air conditioning condenser unit in the rear garden.

    Granted Householder Extension 24 docs
    Small domestic

  • 20 The Avenue Chiswick W4 1HT

    261256LBC Submitted 23 Mar 2026 50 yards away

    Construction of a single storey rear extension to the existing rear extension including the enlargement of the existing roof terrace above at first floor level, internal and external alterations and general refurbishment of the house. Alterations to the existing services and the installation of an air conditioning condenser unit in the rear garden (Listed Building Consent)

    Granted Heritage and listed buildings Extension 27 docs
    Small domestic

  • 20 The Avenue Chiswick W4 1HT

    254708HH Submitted 15 Dec 2025 50 yards away

    87% historically approved · decision due ~9 Feb

    Construction of single storey garden outbuilding with basement level; and replacement boundary treatment facing Queen Anne's Gardens and the installation of an air conditioning condenser unit

    Awaiting decision Householder 13 docs
    Small domestic

  • 20 The Avenue Chiswick W4 1HT

    254709LBC Submitted 15 Dec 2025 50 yards away

    86% historically approved · decision due ~9 Feb

    Construction of single storey garden outbuilding with basement level; and replacement boundary treatment facing Queen Anne's Gardens and the installation of an air conditioning condenser unit (Listed Building Consent)

    Awaiting decision Heritage and listed buildings 13 docs
    Small domestic

  • 20 The Avenue Chiswick W4 1HT

    254708HH Submitted 15 Dec 2025 50 yards away

    89% historically approved · decision due ~9 Feb

    Construction of single storey garden outbuilding with basement level; and replacement boundary treatment facing Queen Anne's Gardens and the installation of an air conditioning condenser unit

    Awaiting decision Householder 13 docs
    Small domestic

In Old Oak and Park Royal Development Corporation

  • 262218HH Granted

    67 Woodfield Road Ealing W5 1SR

    Rear roof extension; installation of a rooflight on the rear roof slope; and associated internal and external alterations

    Received 2 Jun, published by the council 27 Jul 2026 Householder
  • 261961HH Granted

    28 Ludlow Road Ealing W5 1NY

    Replacement of existing single glazed windows and doors with double glazed and internal amendments

    Received 12 May, published by the council 27 Jul 2026 Householder
  • 261866HH Granted

    33 Carlton Road Chiswick W4 5DY

    Single-storey side and rear extension; extension to the rear roof to form a second floor above the existing outrigger (including the construction of a new wall along the side elevation to support the structure); installation of one rooflight within the existing rear roof dormer; alterations to fenestration involving the replacement of an existing rear window with a door; and Formation of a new window and door opening associated with a porch canopy in the side elevation at ground-floor level.

    Received 6 May, published by the council 27 Jul 2026 Householder
  • 262779HH Refused

    14 Summit Road Northolt UB5 5HJ

    Two storey side extension; part single, part two storey rear extension (following demolition of existing single-storey rear extension); alteration of roof from hip to gable end; rear roof extension incorporating a Juliet balcony and installation of three rooflights to front roofslope

    Received 15 Jul, published by the council 20 Aug 2026 Householder
  • 262778HH Refused

    406 Lady Margaret Road Southall UB1 2NL

    Part single, part two-storey side/rear extension (following demolition of existing single-storey side extension); front porch extension (following demolition of existing front porch); alteration of roof from hip to gable end; rear roof extension, and installation of two rooflights to front roofslope

    Received 14 Jul, published by the council 20 Aug 2026 Householder