Skip to content
PlanIndex Get alerts
Menu

Planning application

39 Thornhill Road, London, N1 1JS

Refused Islington P2025/3541/FUL Full Planning (Householder)

Works: Extension Loft or dormer Windows or glazing 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

Erection of roof extension with dormer windows

As published by the council, reference P2025/3541/FUL

Application record

Reference
P2025/3541/FUL
Type
Full Planning (Householder)
Status
1-Incomplete Application
Decision
Refused As published: Refusal of permission
Received
15 Dec 2025
Validated
15 Dec 2025
Decided
6 Feb 2026
Postcode
N1 1JS

Site history

Applications at this address on the Islington register

This site has had 6 applications since 2024: 3 approved, 1 refused.

  • P2026/0305/TRE Granted

    39, Thornhill Road, London, N1 1JS

    T1 - Magnolia - reduce crown by 1-1.5m (not beyond previous points of reduction

    Decided 11 Feb 2026 Trees
  • P2025/1656/TRE Decided

    39, Thornhill Road, London, N1 1JS

    Minor pruning of Magnolia tree, particularly the branches overhanging the neighbours at number 37.

    Submitted 9 Jun 2025 Trees
  • P2025/0620/TRE Decided

    39, Thornhill Road, London, N1 1JS

    T1 - Prickly Cypress - Felling to ground level and treating stump. T2 - Cherry - Felling to ground level and stump grinding.

    Submitted 3 Mar 2025 Trees
  • P2024/3210/FUL Granted

    39 Thornhill Road, London, N1 1JS

    Refurbishment and extension to existing garden studio in the rear garden. Installation of 2no. air source heat pumps and acoustic enclosure in the rear garden.

    Decided 8 Jan 2025 Householder
  • P2024/2774/FUL Granted

    39 Thornhill Road, London, N1 1JS

    Erection of single storey rear extension at lower ground floor level (replacing existing two storey rear outrigger), second floor roof terrace on top of existing side annex, alterations to the fenestration across the front and rear, front landscaping works, timber bike enclosure to front garden and associated works.

    Decided 5 Dec 2024 Householder

Timeline

Dates from the published record

  1. 15 Dec 2025

    Received by Islington

  2. 6 Feb 2026

    Decision issued: Refusal of permission

  3. 8 Aug 2026

    Added to PlanIndex

What this refusal means

Islington 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 0.3 miles

  • 37 Thornhill Road, London, N1 1JS

    P2025/3540/FUL Submitted 15 Dec 2025 50 yards away

    92% historically approved · decision due ~9 Feb

    Erection of roof extension with dormer windows, alterations to front garden incl

    Awaiting decision Householder Extension Loft or dormer +1
    Domestic

  • 39, Thornhill Road, London, N1 1JS

    P2026/0305/TRE Submitted 9 Feb 2026 50 yards away

    T1 - Magnolia - reduce crown by 1-1.5m (not beyond previous points of reduction

    Granted Trees

  • 41, Thornhill Road, London, N1 1JS

    P2025/0453/TRE Submitted 13 Feb 2025 50 yards away

    99% historically approved · decision due ~17 Apr

    A cherry tree located at No. 41 Thornhill Road. The tree has a low crown which overhangs into No. 39 Thornhill Road. Requesting permission to carry our pruning of those branches which overhang No. 39.

    Decided Trees 1 doc

  • 41, Thornhill Road, London, N1 1JS

    P2025/0512/TRE Submitted 21 Feb 2025 50 yards away

    99% historically approved · decision due ~22 Apr

    T1 False acacia Fell to ground level and provide replacement planting (minimum size 14-16cm girth Extra Heavy Standard)

    Decided Trees 3 docs

  • 41Thornhill Road, London, N1 1JS

    P2023/1277/TRE Submitted 3 May 2023 50 yards away

    Rear garden (T1) Cherry - reduce crown to previous reduction points, approx. 3m branch removal, tree's approx. height 8m (T2) Ginkgo - Thin crown by 20-25%

    Granted Trees 4 docs

  • 41, Thornhill Road, London, N1 1JS

    P2025/1595/TRE Submitted 2 Jun 2025 50 yards away

    99% historically approved · decision due ~4 Aug

    T1 - Cherry - reduce crown to points of previous reduction (approx. 2m) T2 - Himalayan Birch - Reduce low branch on S side of tree by 2-3m. Balance by reducing surrounding branches by 1-1.5m T3 Cherry - Reduce crown by 1m, crown lift by 1m

    Decided Trees 6 docs

In Islington

  • P2026/2615/FUL Awaiting decision

    23 Framfield Road, London, N5 1UU

    Erection of outrigger dormer extension and all associated works.

    Received 2 Oct, published by the council 11 Oct 2026 Householder
  • P2026/2593/FUL Awaiting decision

    1 Wyatt Road, London, N5 2JU

    Erection of mansard roof extension.

    Received 1 Oct, published by the council 2 Oct 2026 Householder
  • P2026/2124/FUL Granted

    13 Willow Bridge Road, London, N1 2LB

    Installation of mechanical plant comprising air source heat pumps and an air han

    Received 7 Aug, published by the council 19 Aug 2026 Householder
  • P2026/0821/FUL Granted

    32 Harberton Road, London, N19 3JR

    Retention of 1x bike store and 1x bin store within front garden

    Received 26 Mar, published by the council 25 Jul 2026 Householder
  • P2026/2571/FUL Awaiting decision

    3 Sotheby Road, London, N5 2UP

    Proposed replacement front boundary wall with railings, front garden alterations to enlarge lightwell, cycle and refuse storage and refurbished stone front steps.

    Received 29 Sep, published by the council 11 Oct 2026 Householder