24 Onslow Gardens Hornsey London N10 3JU
Decision Made
HGY/2026/0940
Description
Certificate of lawfulness for the proposed erection of a rear dormer.
Nearby new applications
4 The Court Cascade Avenue Hornsey London N10 3PS
T1: Lime (14m): Repollard to previous points removing 2-3m of growth as part of ...
10 Rookfield Avenue Hornsey London N10 3TS
Holm Oak - Crown reduce the height and spread by approximately 0.5m-0.8m ensurin...
10 Ellington Road Hornsey London N10 3DG
Approval of details reserved by condition 11 (Sustainable Drainage) attached to ...
Flat 1 91 Muswell Hill Road Hornsey London N10 3HT
Rear garden: Sycamore (T1) - reduce lateral branches overhanging number 25 Marwo...
30 Grand Avenue Hornsey London N10 3BB
Front garden- T1-Laurel tree- reduce on all aspects by up to 1m. T2- Crab ...
72 Wood Vale Hornsey London N10 3DN
Lawful development: Construction of an outbuilding
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Within ~100m
Nearby activity
2025
With conditions
50 Woodland Gardens, Hornsey, London, N10 3UA
De-conversion of 3 x self-contained flats back into a single dwelling house.
2025
With conditions
31 Onslow Gardens, Hornsey, London, N10 3JT
Replacement of all existing timber windows with double glaze windows, replacement of exis…
2025
With conditions
7 Onslow Gardens, Hornsey, London, N10 3JT
Demolition of existing ground floor rear extension and first floor conservatory. Erection…
2024
With conditions
7 Onslow Gardens, Hornsey, London, N10 3JT
Demolition of existing ground floor rear extension and first floor conservatory. Erection…
2024
With conditions
36 Woodland Gardens, Hornsey, London, N10 3UA
Replacement of existing single storey conservatory with glazed ground floor rear extensio…
2024
With conditions
Second Floor Flat C, 26 Woodland Gardens, Hornsey, London, N10 3UA
Replacement window to front dormer window on the second floor.
2023
With conditions
13 Onslow Gardens, Hornsey, London, N10 3JT
Retention of use of the property as a large HMO (sui generis), including its reduction fr…
2023
With conditions
15 Onslow Gardens, Hornsey, London, N10 3JT
Formation of new crossover and off street parking to front of property
2023
Refused
13 Onslow Gardens, Hornsey, London, N10 3JT
Use of existing outbuilding, to provide sleeping accommodation ancillary to existing prop…
2023
With conditions
13 Onslow Gardens, Hornsey, London, N10 3JT
Construction of an outbuilding
2023
With conditions
Ground Floor Flat, 72 Woodland Gardens, Hornsey, London, N10 3UA
Alterations to existing rear extension, roof light with new external windows
2022
With conditions
19, Onslow Gardens, London, N10 3JT
Erection of a single storey ground floor side infill to existing outrigger, lower ground…
2022
With conditions
Flat 1, 21, Woodland Gardens, London, N10 3UE
Erection of single storey rear extension, addition of new rear doors and creation of rais…
2022
With conditions
Flat 1, 46, Onslow Gardens, London, N10 3JX
Proposed single storey rear/side infill extension to ground floor garden flat with green…
2022
Withdrawn
13, Onslow Gardens, London, N10 3JT
Change of use of property from C4 use (accommodation for 3-6 unrelated individuals) to Su…
2022
With conditions
1, Onslow Gardens, London, N10 3JT
Erection of a single storey rear infill kitchen extension.
2022
Refused
1, Onslow Gardens, London, N10 3JT
Erection of single storey rear infill extension. Alterations and roof extension of existi…
2021
With conditions
15, Onslow Gardens, London, N10 3JT
Single storey ground floor extension to rear of building. Re-modelling of first floor out…
2021
With conditions
Ground Floor Flat A, 26, Woodland Gardens, London, N10 3UA
Replacement of 3 x like for like front timber sash windows; replacement of 1x side timber…
2021
With conditions
5, Woodland Gardens, London, N10 3UE
Rear roof extension and associated roof terrace to existing two storey outrigger and 4 x…
2017
Approved
12 Woodland Gardens London N10 3UA
Single storey rear extension and installation of three new windows
2016
Approved
20 Onslow Gardens London N10 3JU
Single storey rear/side extension with 2x sky lanterns, replace existing 1st floor roof w…
2016
Withdrawn
20 Onslow Gardens London N10 3JU
First floor rear balcony with glazed balustrade and obscure 1.7m high glazed panels to si…
2016
Approved
20 Onslow Gardens London N10 3JU
Application for a Lawful Development Certificate for rear roof extension to facilitate a…
2016
Approved
108 Muswell Hill Road London N10 3JD
Change of use from studio to use as studio and residential annex to main building
Haringey
Planning Authority Score
4/10
Below average
#198 of 292 councils
Relevant to this application:
Householder decisions
Haringey is slower than most councils at deciding householder applications, ranking #202 out of 292. Householder applications are slightly more likely to be approved here (91%) than the national average (90%).
Slower than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application.
View full council performance
Haringey decision performance
Based on MHCLG data, 2025
85%
Overall approval rate
Below avg (87%) #208 of 292
91%
Householder approved
Above avg (90%) #169 of 292
56%
Decided in 8 weeks
Below avg (64%) #202 of 292
41%
Extended time limit
Above avg (40%) #156 of 292
81%
Minor dwellings approved
281 decided (1-9 homes)
100%
Major dwellings approved
8 decided (10+ homes)
60%
Change of use approved
25 decided
1,414
Total decisions
208 refused in 2025