20 The Avenue Chiswick W4 1HT

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

• 261255HH Granted

  20 The Avenue Chiswick W4 1HT

  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.

  Decided 3 Jul 2026 Householder
• 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
• 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

1. 15 Dec 2025

   Received by Old Oak and Park Royal Development Corporation

2. 3 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 9 February 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Old Oak and Park Royal Development Corporation took a median of 55 days over the applications it decided in the last year.

• Application: 254709LBC (Awaiting decision)

This application is with Old Oak and Park Royal Development Corporation for determination, against a statutory target of eight weeks. Over the last year Old Oak and Park Royal Development Corporation decided householder applications in a median of 62 days. More in our guide to how long planning decisions take.

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.

• 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

  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

  254709LBC Submitted 15 Dec 2025 50 yards away

  88% 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 21 docs
  Small domestic

• 20 The Avenue Chiswick W4 1HT

  254708HH Submitted 15 Dec 2025 50 yards away

  88% 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 22 docs
  Small domestic

• 260566HH Refused

  1 Benham Road Hanwell W7 1AQ

  Part single part two storey rear extension; insertion of additional window to side elevation first floor level; and front porch extension (following demolition of existing conservatory)

  Received 11 Feb, published by the council 3 Aug 2026 Householder
• 262878HH Granted

  167 Murray Road Ealing W5 4DD

  Single storey rear extension (following demolition of existing rear addition); removal of chimney breast; and alterations to the fenestration

  Received 23 Jul, published by the council 30 Aug 2026 Householder
• 262906HH Granted

  6 Milford Road West Ealing W13 9HZ

  Single storey rear extension (following demolition of existing rear addition)

  Received 27 Jul, published by the council 10 Sep 2026 Householder
• 262954HH Refused

  6 Gosling Close Greenford UB6 9UE

  Single storey extension and internal alterations

  Received 30 Jul, published by the council 10 Sep 2026 Householder
• 262963HH Granted

  14 Winchester Street Acton W3 8PA

  Single storey side/rear wraparound extension

  Received 31 Jul, published by the council 21 Sep 2026 Householder