Planning application
HGY/2021/1871
80, Muswell Hill Road, London, N10 3JR
Proposal
Certificate of lawfulness (proposed use) for erection of a rear extension, alterations to window openings at front and rear. New rooflights in existing roof slope and replacement of existing timber windows with new metal framed windows.
As published by the council, reference HGY/2021/1871
Timeline
Dates from the published record
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1 Jun 2021
Received by Haringey
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27 Jul 2021
Decision issued: Permission Required CoL
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28 Jul 2026
Added to PlanIndex
After the decision
The process from here
The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.
If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
-
HGY/2025/3479 Granted
66 Muswell Hill Road, Hornsey, London, N10 3JR
Demolition of existing conservatory and erection a single storey rear extension with roof terrace, alterations to rear fenestration and enlargement of rear dormer window and rooflight, and installation of a rooflight to the main roof.
-
HGY/2026/1018 Granted
64, Flat C, Muswell Hill Road, N10 3JR
Roof alteration to create roof terrace to upper level flat (Amended description)
-
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 lawful development applications
In Haringey
-
HGY/2026/2104 Granted
17 Sperling Road, Tottenham, London, N17 6UQ
Certificate of lawfulness for proposed use: Loft conversion with erection of rear L-shaped dormer and insertion of 2no. front rooflights.
-
HGY/2026/1307 Granted
49 Lordsmead Road, Tottenham, London, N17 6EX
Certificate of lawfulness for the existing use of the property as five separate self-contained flats.
-
HGY/2026/1885 Granted
6, Grainger Road, London, N22 5LT
Certificate of Lawfulness: Proposed alterations to the roof comprising the installation of 3no. rooflights (2no. front facing and 1no. rear facing).
-
HGY/2026/1375 Granted
Flats 1, 2, & 3 149 Crescent Road, Wood Green, London, N22 7RU
Certificate of lawfulness for the existing use of the property as 3 self-contained flats (comprising of ground floor 2 bed, first floor 2 bed, second floor 1 bed) for more than 4 years.
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HGY/2026/1409 Granted
492 Archway Road, Hornsey, London, N6 4NA
Certificate of Lawfulness Existing Use. Use of lower ground floor as two flats (Use Class C3).