18 Valnay Street SW17 8PT
NEW
2026/1075
Description
Alterations inlcuding, erection of a mansard extension on the main rear roof slope and extension over the two-storey outrigger roof plus roof terrace with 1.7m privacy screens at the rear. Alterations to the ground-floor rear fenestration.
Other new applications on this street
Nearby new applications
231 Upper Tooting Road SW17 7TG
REAR DORMER EXTENSIONS WITH REAR TERRACE TO FACILITATE LOFT CONVERSION
4 Hoyle Road SW17 0RS
Use as 2 x separate self-contained flats (Class C3)
236 Sellincourt Road SW17 9SB
Erection of a rear mansard extension to main rear roof slope with the formation ...
48 Graveney Road SW17 0EH
Alterations including erection of an extension to the main rear roof; Erection o...
149 Sellincourt Road SW17 9RZ
Installation of first floor rear external metal staircase to rear garden and ass...
225 Franciscan Road SW17 8HQ
ERECTION OF THE FLAT ROOF REAR AND INFILL EXTENSION
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
7 Valnay Street SW17 8PS
Alterations including erection of roof extension above two storey back addition.
2025
With conditions
21 Dewey Street SW17 8TQ
Alterations includng erection of dormer roof extension to main rear roof and roof extensi…
2025
With conditions
21 Valnay Street SW17 8PS
Alterations including extension above two storey back addition.
2025
With conditions
Francis Barber Pupil Referral Unit Franciscan Road SW17 8HE
Details of BREEAM, Photovoltaic Panels and External Plant pursuant to conditions 14, 16 a…
2025
With conditions
Francis Barber Pupil Referral Unit Franciscan Road SW17 8HE
Details of External Materials, Details Of Specific Items, Hard landscaping, Ecological En…
2025
With conditions
48 Undine Street SW17 8PR
Alterations including erection of roof extension to main rear roof and erection of single…
2024
With conditions
284 Franciscan Road London SW17 8HF
Details of Water calculations pursuant to condition 9 of planning permission dated 23/11/…
2024
With conditions
Francis Barber Pupil Referral Unit Franciscan Road SW17 8HE
Details of Employment and Skills Plan pursuant to Condition 7 of planning permission date…
2024
With conditions
Francis Barber Pupil Referral Unit Franciscan Road SW17 8HE
Details of site levels (condition 5), construction management plan (condition 8), dust ma…
2024
With conditions
33 Valnay Street SW17 8PS
Alterations including erection of roof extension above two-storey back addition (with Fre…
2024
With conditions
33 Valnay Street SW17 8PS
Erection of single-storey rear/side extension.
2024
With conditions
32 Valnay Street SW17 8PT
Alterations including erection of mansard roof extension to main rear roof (with French d…
2024
With conditions
Professional Centre School House 281 Franciscan Road SW17 8HE
Alterations including installation of replacement first floor rear window, replacement do…
2024
With conditions
Professional Centre School House 281 Franciscan Road SW17 8HE
Alterations including installation of replacement first floor rear window, replacement do…
2024
Approved
61 Valnay Street SW17 8PS
Erection of single-storey rear extension to extend beyond the rear wall of the existing d…
2023
With conditions
Francis Barber Pupil Referral Unit Franciscan Road SW17 8HE
Demolition of existing buildings on site, apart from the southernmost sports hall, and re…
2023
With conditions
Francis Barber Pupil Referral Unit Franciscan Road SW17 8HE
Demolition of existing buildings on site, apart from the southernmost sports hall, and re…
2024
With conditions
282 Flat Ground Floor Franciscan Road SW17 8HF
Alterations including erection of single storey rear and side extension.
2024
With conditions
61 Valnay Street SW17 8PS
Erection of a dormer extension to main rear roof slope.
2024
Withdrawn
Professional Centre School House 281 Franciscan Road SW17 8HE
Details of refuse storage pursuant to condition 3 of Listed building permission dated 01/…
2016
With conditions
13 Valnay Street SW17 8PS
Erection of single storey side/rear extension.
2016
With conditions
19 Valnay Street SW17 8PS
Alterations including erection of dormer extensions to main rear roof (including French d…
2016
With conditions
32 Undine Street SW17 8PR
Erection of dormer roof extension to main rear roof (with French doors and railings).
2016
Withdrawn
52 Undine Street SW17 8PR
Erection of dormer roof extension to main rear roof.
2016
Withdrawn
10 Undine Street SW17 8PR
Erection of dormer roof extension (with french doors and safety raillings) to main rear r…
Wandsworth
Planning Authority Score
5.2/10
Average
#138 of 292 councils
Relevant to this application:
Householder decisions
Wandsworth ranks #162 out of 292 councils for householder decision speed. Householder applications are slightly more likely to be approved here (93%) than the national average (90%).
These figures are council-wide context, not a prediction for this application.
View full council performance
Wandsworth decision performance
Based on MHCLG data, 2025
90%
Overall approval rate
Above avg (87%) #122 of 292
93%
Householder approved
Above avg (90%) #138 of 292
63%
Decided in 8 weeks
Below avg (64%) #162 of 292
37%
Extended time limit
Below avg (40%) #123 of 292
88%
Minor dwellings approved
720 decided (1-9 homes)
83%
Major dwellings approved
18 decided (10+ homes)
82%
Change of use approved
38 decided
2,141
Total decisions
222 refused in 2025