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Planning application

St Bees Day House Mill Hill School The Ridgeway London NW7 1QS

Granted Barnet 25/3456/FUL Full Application

Works: Extension Demolition

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

Proposal

Two storey side extension with associated internal alterations for use as a Junior Boarding House for up to 30 boarders incorporating the existing staff flat at second floor level following demolition of existing side extension and outbuilding (Amended plans and description)

As published by the council, reference 25/3456/FUL

Application record

Reference
25/3456/FUL
Type
Full Application
Status
Approved subject to conditions
Decision
Granted As published: Approve subject to conditions
Received
19 Aug 2025
Validated
19 Aug 2025
Decided
19 Dec 2025
Ward
Mill Hill
Decision by
Delegated Decision
Postcode
NW7 1QS

Site history

Applications at this address on the Barnet register

This site has had 3 applications since 2025: 1 approved, 0 refused.

  • 26/2329/CON Decided

    St Bees Day House Mill Hill School The Ridgeway London NW7 1QS

    Submission of details of conditions 7 (Low Level Lighting) and 11 (Landscaping) pursuant to 25/3456/FUL dated 19/12/25

    Submitted 19 Jun 2026
  • 26/0439/CON Awaiting decision

    St Bees Day House Mill Hill School The Ridgeway London NW7 1QS

    Submission of details of conditions 3 (Materials), 4 (Biodiversity Net Gain Plan), 5 (Precautionary Working Method Statement), 6 (Demolition), 9 (Hedgehog Highways) and 10 (Ecological Enhancements) pursuant to planning permission 25/3456/FUL dated 19/12/25

    Submitted 5 Feb 2026 Conditions

Timeline

Dates from the published record

  1. 19 Aug 2025

    Received by Barnet

  2. 19 Dec 2025

    Decision issued: Approve subject to conditions

  3. 10 Aug 2026

    Added to PlanIndex

Cases linked to this one on the register

2 later applications on the register refer to this one:

  • 26/2329/CON Decided

    St Bees Day House Mill Hill School The Ridgeway London NW7 1QS

    Submission of details of conditions 7 (Low Level Lighting) and 11 (Landscaping) pursuant to 25/3456/FUL dated 19/12/25

    Submitted 19 Jun 2026
  • 26/0439/CON Awaiting decision

    St Bees Day House Mill Hill School The Ridgeway London NW7 1QS

    Submission of details of conditions 3 (Materials), 4 (Biodiversity Net Gain Plan), 5 (Precautionary Working Method Statement), 6 (Demolition), 9 (Hedgehog Highways) and 10 (Ecological Enhancements) pursuant to planning permission 25/3456/FUL dated 19/12/25

    Submitted 5 Feb 2026 Conditions

Who's behind it

Company information only, from the register and Companies House

Squires and Brown Agent, registered in Mobberley

Active · incorporated 2000 · Mobberley

16 applications on PlanIndex · across 6 councils · 100% granted

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Documents

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

32 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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What this grant of permission means

Barnet granted permission on 19 December 2025, 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 full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • St Bees Day House Mill Hill School The Ridgeway London NW7 1QS

    26/0439/CON Submitted 5 Feb 2026 50 yards away

    93% historically approved · decision due ~2 Apr

    Submission of details of conditions 3 (Materials), 4 (Biodiversity Net Gain Plan), 5 (Precautionary Working Method Statement), 6 (Demolition), 9 (Hedgehog Highways) and 10 (Ecological Enhancements) pursuant to planning permission 25/3456/FUL dated 19/12/25

    Awaiting decision Conditions Demolition 5 docs

  • 22 High Street London NW7 1QY

    TCP/0531/25 Submitted 28 Aug 2025 50 yards away

    1 x London Plane (applicants ref. T052) - Fell.

    Decided Trees 24 docs

  • Winterstoke House And Grimsdell Pre-Preparatory School Wills Grove London NW7 1QR

    TCP/0159/26 Submitted 24 Feb 2026 100 yards away

    1 x Silver Birch (applicants ref. T054) - Fell. 1 x Lawson Cypress (applicants ref. T058) - Fell. 1 x Mulberry (applicants ref. T060) - Crown reduce by 2 metres.

    Decided Trees 10 docs

  • Rosebank Barn The Ridgeway London NW7 1QX

    TCP/0370/26 Submitted 30 Jun 2026 100 yards away

    78% historically approved · decision due ~25 Aug

    1 x Horse Chestnut (applicants ref. T1) -Crown thin by 20%. 1 x Conifer (applicants ref. T2) - Reduce by 3 metres. 1 x Conifer (applicants ref. T3) - Reduce by 3 metres. 1 x Thin by 20% and reduce by 3 metres. 1 x Conifer (applicants ref. T6) - Reduce by 3 metres. 1 x Alder (applicants ref. T7) - Thin by 20% and reduce by 3 metres in height. 1 x Ash (applicants ref. T8) - Thin by20% and reduce by 3 metres in height. 1 x Twin Stem Sycamore (applicants ref. T9) - Thin crown by 20% and reduce by 3 metres in height. 1 x Dead Tree (applicants ref. T10) - Fell to ground level. Ash Group (applicants ref. T11) - Thin crown by 20% and reduce by 2 metres. 1 x Dead Tree (applicants ref. T12) - Remove.

    Awaiting decision Trees

  • Kingshead The Ridgeway London NW7 1QX

    TCP/0345/26 Submitted 18 Jun 2026 100 yards away

    78% historically approved · decision due ~13 Aug

    1 x Hornbeam (applicants ref. T4 on Plan and Schedule) - Reduce to 7 metres in height and 5 metres spread.

    Awaiting decision

  • Kingshead The Ridgeway London NW7 1QX

    TCP/0402/26 Submitted 15 Jul 2026 100 yards away

    78% historically approved · decision due ~9 Sep

    1 x Twin Stemmed Lime (applicants ref. T1) - Reduce by 3m and thin by 20%. 1 x Ash (applicants ref. T2) - Reduce by 3m and thin by 20%. 1 x Field Maple (applicants ref. T3) - Reduce by no more than 2.5m over the whole crown and thin by 20% (amended descriptions) 2 x Ash (applicants ref. T4, T5) - Reduce to previous pollard points and thin crown density by 30%.

    Awaiting decision Trees

In Barnet

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    23 Oct 2026 Full applications
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    22 Oct 2026 Full applications