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Planning application

101 Gonville Crescent Northolt UB5 4SJ

Refused Old Oak and Park Royal Development Corporation 262081HH Householder

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Change of use of the existing private garden gym/outbuilding incidental to the main dwellinghouse into ancillary habitable accommodation (granny annexe) for use in connection with the main dwellinghouse (Use Class C3) (Retrospective Application)

As published by the council, reference 262081HH

Application record

Reference
262081HH
Type
Householder
Status
Refused
Decision
Refused
Received
20 May 2026
Validated
20 May 2026
Decided
18 Aug 2026
Ward
Northolt Mandeville
Decision by
Delegated Decision
Postcode
UB5 4SJ

Timeline

Dates from the published record

  1. 20 May 2026

    Received by Old Oak and Park Royal Development Corporation

  2. 27 Jul 2026

    Added to PlanIndex

  3. 10 Aug 2026

    Status changed to Awaiting decision

    Previously Pending Consideration.

  4. 18 Aug 2026

    Decision issued: Refused

Who's behind it

Company information only, from the register and Companies House

March In Design Agent, a design practice

13 applications on PlanIndex · across 6 councils · 69% granted

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Documents

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

11 documents on file for this application

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What this refusal means

Old Oak and Park Royal Development Corporation refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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 500 metres

  • 2 Gonville Crescent Northolt UB5 4SJ

    262791PALHE Submitted 16 Jul 2026 0m away

    Single storey (max. 6.0m deep and 3.40m high) side/rear extension (42 Days Prior Approval Notification Process).

    Granted Prior approval Extension 6 docs
    Small domestic
  • 2 Gonville Crescent Northolt UB5 4SJ

    262005PALHE Submitted 14 May 2026 0m away

    Single storey (Max 6m deep and Max 3.40m high) rear extension (42 days Prior Notification Process)

    Refused Prior approval Extension 7 docs
    Small domestic
  • 2 Gonville Crescent Northolt UB5 4SJ

    261987CPL Submitted 13 May 2026 0m away

    Alteration of roof from hip to gable end; rear roof extension and installation of three roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)

    Granted Lawful development Extension Loft or dormer 6 docs
  • 65 Gonville Crescent Northolt UB5 4SJ

    262724CPL Submitted 9 Jul 2026 0m away

    Front porch extension (following demolition of existing front porch); alteration of roof from hip to gable end; rear roof extension incorporating Juliet balcony; installation of two rooflights to front roofslope (Lawful Development Certificate for a Proposed Development)

    Granted Lawful development Extension Loft or dormer +1 9 docs
    Small domestic
  • 65 Gonville Crescent Northolt UB5 4SJ

    262699PALHE Submitted 8 Jul 2026 0m away

    Single storey rear extension (max 5.7m deep and max 4m high) (following demolition of rear extension) (42 Days Prior Approval Notification Process)

    Granted Prior approval Extension Demolition 8 docs
    Small domestic
  • 101 Gonville Crescent Northolt UB5 4SJ

    262081HH Submitted 20 May 2026 0m away

    Change of use of the existing private garden gym/outbuilding incidental to the main dwellinghouse into ancillary habitable accommodation (granny annexe) for use in connection with the main dwellinghouse (Use Class C3) (Retrospective Application)

    Refused Householder 11 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

    2 Jun 2026 Householder
  • 261961HH Granted

    28 Ludlow Road Ealing W5 1NY

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

    12 May 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.

    6 May 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

    15 Jul 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

    14 Jul 2026 Householder