Planning application
HGY/2026/1095
25 Muswell Hill Road, Hornsey, London, N10 3JB
Proposal
Formation of a rear dormer roof extension finished in brick to match existing building; formation of front dormer window finished in standing seam zinc with timber windows; installation of air-conditioning unit to side; installation of rooflights to front and rear roofslopes
As published by the council, reference HGY/2026/1095
Timeline
Dates from the published record
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17 Apr 2026
Received by Haringey
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12 Jun 2026
Decision issued: Approve with Conditions
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24 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About householder applications
How this application type works
Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.
Nearby applications
Within 500 metres
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HGY/2026/1384 Granted
First And Second Floor Flat, 15 Muswell Hill Road, Hornsey, London, N10 3JB
Non-Material Amendment to change the dormer sill proportions of original ref: HGY/2025/3201
-
HGY/2026/0036 Granted
19C Woodland Rise, Hornsey, London, N10 3UP
Works to trees protected by a TPO. T1: Lime (7m): Re-pollard to previous points removing up to 3m of growth as part of regular maintenance and to keep trees at a size suitable for their location T2: Lime (7m): Re-pollard to previous points removing up to 3m of growth as part of regular maintenance and to keep trees at a size suitable for their location T3: Lime (7m): Re-pollard to previous points removing up to 3m of growth as part of regular maintenance and to keep trees at a size suitable for their location T4: Lime (7m): Re-pollard to previous points removing up to 3m of growth as part of regular maintenance and to keep trees at a size suitable for their location
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HGY/2026/1715 Awaiting decision
26 Onslow Gardens, Hornsey, London, N10 3JU
Lawful development: Proposed use for the erection of a rear dormer with 2 no. rooflights on the front roof slope.
-
HGY/2026/1408 Granted
24 Onslow Gardens, Hornsey, London, N10 3JU
Enlargement of existing rear dormer and installation of a front dormer window.
-
HGY/2026/1679 Awaiting decision
24 Onslow Gardens, Hornsey, London, N10 3JU
Erection of a single storey rear and side wraparound extension.
-
HGY/2026/1669 Awaiting decision
26 Onslow Gardens, Hornsey, London, N10 3JU
Erection of a wrap around ground floor rear extension and extension of first floor rear outrigger; erection of two front roof lights.
Other householder applications
In Haringey
-
HGY/2026/1575 Granted
48 Richmond Road, Tottenham, London, N15 6QB
Construction of single storey side infill extension, together with the installation of a Sukkah roof roof.
-
HGY/2026/1504 Granted
19 Bromley Road, Tottenham, London, N17 0AR
Ground floor wraparound extension to a end of terrace house.
-
HGY/2026/1947 Awaiting decision
6 Umfreville Road, Hornsey, London, N4 1SB
Roof extension including above existing outrigger, to create two new habitable rooms and a shower room. Proposal includes new front facing turret in the style of an original feature, with a total of 3 Velux style rooflights to the front elevation and 1 flat rooflight.
-
HGY/2026/0798 Granted
Flat 2, Wren View, Hornsey Lane, Hornsey, London, N6 5LH
Replacement windows to the rear facing studio flat.
-
HGY/2026/1491 Granted
16 Cornwall Road, Hornsey, London, N4 4PH
Formation of rear dormer and 3 no. front rooflights