9 Oxonian Street London Southwark SE22 8HR Data via plota.co.uk

26/AP/2554 - Certificate of Lawful Dev. - Proposed Under consideration/assessment
Extensions & alterations

Proposal

Certificate of lawfulness (proposed) for erection of a rear roof dormer and installation of two rooflights to the front roof slope to facilitate a loft conversion, together with associated internal alterations and re-covering of the retained roof slopes to match existing. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
27 Aug 2026
✓
Validated
28 Aug 2026
Decision
Expected by 22 Oct 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision around 18 Oct 2026, from Southwark's recent extensions.

Documents 5

Statements & assessments 1

PDF PLANNING STATEMENT Planning statement · 27 Aug 2026 View ↗

Plans & drawings 2

PDF 0303 REV B SECTION - PROPOSED - BB Plan - Proposed · 27 Aug 2026 View ↗ PDF 0301 REV B SECTION - PROPOSED - AA Plan - Proposed · 27 Aug 2026 View ↗

Application forms 2

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application - Form (Without Personal data) · 27 Aug 2026 View ↗ PDF COMMUNITY INFRASTRUCTURE LEVY - COMPLETED FORM CIL - GIA Form · 27 Aug 2026 View ↗

All documents on the council site ↗

Site constraints 4

Air quality management area: Southwark AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
1 listed building within 150 m; Inside the Southwark built-up area; Town centre 76 m away: Dulwich - Lordship Lane.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Important details

Council
Southwark
Application type
Certificate of Lawful Dev. - Proposed
Postcode
SE22 8HR
Received
27 Aug 2026
Validated
28 Aug 2026
Ward
Goose Green
Parish
Dulwich
Case officer
Show
Target decision
22 Oct 2026
Applicant
Show
Agent
Studio Sedge

Decision outlook

Day 16 of the 56-day target. Southwark usually decides extensions by day 51.

Day 1640 days to the 56-day target
78%decided within 8 weeks
94%approved
468decided in the last year

Plota live figures for extensions decided by Southwark in the last twelve months, from validation. Southwark decision record →

Public comments

No public comments yet.

Last counted 11 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry
22 Oct 2026
Env. assessment
No

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025
25 Elsie Road London Southwark SE22 8DX
Erection of single storey rear extension
25/AP/2863
2025
19 East Dulwich Grove London Southwark SE22 8PW
Conversion of existing basement to form 1no. residential flat, including basement extensi…
25/AP/2195
2025
22 Zenoria Street London Southwark SE22 8HP
Demolition of existing ground floor rear extension and construction of new ground floor s…
25/AP/1665
2025
44A East Dulwich Grove London Southwark SE22 8PP
Construction of lower ground floor flat side and rear extension, alteration to existing r…
25/AP/1323
2025
33 East Dulwich Grove London Southwark SE22 8PW
Installation of advertisements incl. 1no. wall mounted display board sign, 1no. painted l…
25/AP/1078
2025
33 East Dulwich Grove London Southwark SE22 8PW
Installation of advertisements incl. 1no. wall mounted display board sign, 1no. painted l…
25/AP/1077
2025
23 East Dulwich Grove London Southwark SE22 8PW
Construction of single-storey rear wraparound extension. Conversion of loft to habitable…
25/AP/0999
2025
33 East Dulwich Grove London Southwark SE22 8PW
Installation of external plant equipment with enclosures and associated enabling works wi…
25/AP/0254
2024 Approved
1A Zenoria Street And 8-10 Lordship Lane London Southwark SE22 8HP
Installation of kitchen extraction system and ducting to rear elevation.
24/AP/1364
2023 Approved
Flat A 19 East Dulwich Grove London Southwark SE22 8PW
Conversion of basement level into habitable accommodation including construction of singl…
23/AP/3592
2024 Approved
36B Elsie Road London Southwark SE22 8DX
Erection of a hip to gable roof conversion with the addition of a rear dormer, Juliet bal…
24/AP/0528
2023 Approved
31 Elsie Road London Southwark SE22 8DX
Ground floor single storey rear extension. Alterations to the north and south side elevat…
23/AP/3509
2023 Approved
27 Tintagel Crescent London Southwark SE22 8HT
Construction of rear dormer, installation of two rooflights to front roof slope, removal…
23/AP/3546
2023 Approved
24 Elsie Road London Southwark SE22 8DX
Erection of single storey ground floor rear extension; alterations to rear and side elelv…
23/AP/2032
2023 Refused
20 - 22 Lordship Lane London Southwark SE22 8HN
Construction of a single storey upward extension to an existing three storey building to…
23/AP/2295
2023 Approved
Flat B 18 Lordship Lane London Southwark SE22 8HN
Rear dormer roof extension and roof lights to the front roof slope.
23/AP/1974
2023 Approved
20 - 22 Lordship Lane London Southwark SE22 8HN
Loft conversion to form 3 office spaces and installation of four roof lights (two to the…
23/AP/1926
2023 Refused
Flat B 18 Lordship Lane London Southwark SE22 8HN
Construction of a loft conversion on main roof with the erection of a front and rear dorm…
23/AP/1118
2023 Approved
16 Lordship Lane London Southwark SE22 8HN
Replacement of existing timber shopfront with glass and steel frame shopfront.
23/AP/0833
2023 Approved
16 Lordship Lane London Southwark SE22 8HN
Display of internally illuminated fascia signage
23/AP/0762
2016 Approved
Flat Ground Floor 11 East Dulwich Grove London SE22 8PW
Ground floor side and rear extension, facade alterations and terrace over the flat roof.
16/AP/5184
2016 Approved
22 Zenoria Street London SE22 8HP
Construction of a rear/side L-shape single storey ground floor extension
16/AP/4643
2016 Approved
31 East Dulwich Grove London SE22 8PW
T1 - Large Lime tree in front garden. Routine maintenance - Pollard to previous points T2…
16/AP/2902
2016 Approved
Ground Floor Flat 36A Elsie Road London SE22 8DX
Variation of condition 3 of planning permission 15/AP/2444 for the ' Single storey rear e…
16/AP/0699
2016 Approved
13 Zenoria Street London SE22 8HP
Removal of existing side bay window and erection of single-storey rear / side infill exte…
16/AP/0177
Southwark
Planning Authority Score
7/10
Good
#64 of 296 councils
Relevant to this application:
Householder decisions

Southwark is faster than most councils at deciding householder applications, ranking #54 out of 296. Householder applications are slightly more likely to be approved here (95%) than the national average (90%).

Faster than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Southwark decision statistics
Based on MHCLG data, the year to March 2026
92%
Overall approval rate
Above avg (87%) #93 of 296
95%
Householder approved
Above avg (90%) #92 of 296
78%
Decided in 8 weeks
Above avg (63%) #54 of 296
37%
Extended time limit
Below avg (41%) #122 of 296
92%
Minor dwellings approved
259 decided (1-9 homes)
86%
Major dwellings approved
14 decided (10+ homes)
82%
Change of use approved
38 decided
1,622
Total decisions
132 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings