Planning application
20 St Marys Crescent London NW4 4LH
Works: Extension Demolition Small domestic
Read from the description, not a valuation. How we read the register
Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.
Proposal
Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 2.95 metres, following the demolition of the existing single storey extension.
As published by the council, reference 25/4111/PNH
Application record
- Reference
- 25/4111/PNH
- Type
- Prior Notification (Householder)
- Status
- Prior Approval Required and Refused
- Decision
- Prior Approval Required and Refused
- Received
- 13 Oct 2025
- Validated
- 13 Oct 2025
- Decided
- 17 Nov 2025
- Ward
- Hendon
- Decision by
- Delegated Decision
- Postcode
- NW4 4LH
Timeline
Dates from the published record
-
13 Oct 2025
Received by Barnet
-
17 Nov 2025
Decision issued: Prior Approval Required and Refused
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, a planning consultancy registered in Barnet
59 applications on PlanIndex · across 10 councils · 69% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
13 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.
Trade members open them from here.
Open the documentsWhat this refusal means
Barnet 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 prior approval applications
Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
44 St Marys Crescent London NW4 4LH
Single storey front porch/side extension including conversion of the existing garage into habitable room, insertion of window to replace the existing garage door and front new access steps with associated railings
Granted Householder Extension Windows or glazing 5 docsSmall domestic -
Church Farm House Museum Greyhound Hill London NW4 4JR
1 x Mulberry Tree - Remove storm damaged limb. 1 x Silver Birch Tree - Fell. (Exempted 5 day notice)
Decided Trees 6 docs -
32 Greyhound Hill London NW4 4JP
Non material amendment to planning permission 25/1930/HSE dated 03/07/2025 for 'Part single, part two storey rear extension with 1no. rooflight following demolition of the existing conservatory and garage. Single storey front extension. Roof extension including rear dormer and pitch roof over the existing two storey flat roofed side extension and removal of existing chimneys'. Amendments includes alterations on render to facing brick, velux's missing from the elevation which were on approved layout & internal alterations
Withdrawn Amendments Extension Loft or dormer +1 3 docsSmall domestic -
32 Greyhound Hill London NW4 4JP
79% historically approved · decision due ~26 Jun
Roof extension involving hip to gable, rear dormer windows, 3no. front facing rooflights following demolition of existing chimneys Loft conversion by replacing existing roof & replacing with up & over roof with 3 velux to front & dormer to rear
Awaiting decision Lawful development Extension Loft or dormer +2 2 docs -
32 Greyhound Hill London NW4 4JP
Variation of condition 3 (Materials) of planning permission reference 25/1930/HSE dated 03/07/2025 for Part single, part two storey rear extension with 1no. rooflight following demolition of the existing conservatory and garage. Single storey front extension. Roof extension including rear dormer and pitch roof over the existing two storey flat roofed side extension and removal of existing chimneys. Variation to include change to facing brickwork
Granted Conditions Extension Loft or dormer +1 7 docsSmall domestic -
34 Greyhound Hill London NW4 4JP
95% historically approved · decision due ~11 Mar
Variation of condition 1 (Approved Plans) pursuant to planning permission 24/4150/HSE dated 12/12/2024 for `Part single, part two storey side extension following the demolition of existing garage/side extension. Single storey rear extension. Single storey front extension and new front porch.` Amendmend to approved flat roof, terrace area, parapet added to flank walls, changes to approved fenestration and installation of side and rear rooflight
Awaiting decision Conditions Extension Loft or dormer +2 10 docsSmall domestic
Other prior approval applications
In Barnet
-
26/3224/PNH Awaiting decision
Low Ridge Rowley Lane Barnet EN5 3HS
Single storey rear extension with a proposed depth of 8.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres.
-
26/3218/PNH Awaiting decision
22 Highcroft Gardens London NW11 0LX
2no. Single storey rear extensions with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres, and depth of 3.05 metres, maximum height of 3.00 metres and eaves height of 3.00 metres respectively, following demolition of existing roofed patio.
-
26/3212/PNH Awaiting decision
10 Richmond Road Barnet EN5 1SB
Single storey rear extension with a proposed depth of 5.54 metres, maximum height of 3.50 metres and eaves height of 3.00 metres.
-
26/3183/PNH Awaiting decision
34 Selvage Lane London NW7 3SP
Single storey rear extension with a proposed depth of 3.80 metres, maximum height of 3.00 metres and eaves height of 2.75 metres, following partial demolition of existing side manifestation.
-
26/3194/PNH Awaiting decision
74 Windsor Drive Barnet EN4 8UD
Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 2.60 metres, following demolition of the existing rear extension.