15 Colnbrook Street London Southwark SE1 6EZ Data via plota.co.uk

26/AP/1114 - Householder Application Under consideration/assessment

Proposal

first-floor rear extension to existing outrigger; lowering & reinstatement of front parapet entablature; repair and re-glazing of existing windows; replacement of rear basement window with French doors; installation of Air Source Heat Pump and building services upgrades; associated internal alterations, repairs, and landscaping. Data via plota.co.uk

View original council record ↗

Application progress

Received
20 Apr 2026
Validated
7 May 2026
Decision
Awaiting decision

This application is under consideration - no decision has been issued yet.

Documents 46

Plans & drawings 34

PDF 421-SE1 6EZ - URB - ZZ - S2 - DR - A - 2202 - R10 SECTIONS PROPOSED BUILDING SECTION Plan - Proposed · 17 Jul 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - S1 - DR - A - 2201 - R10 SECTIONS PROPOSED BUILDING SECTION Plan - Proposed · 17 Jul 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E3 - DR - A - 2103 - R10 ELEVATIONS PROPOSED E-03 ELEVATION, ELEVATION Plan - Proposed · 17 Jul 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E2 - DR - A - 2102 - R10 ELEVATIONS PROPOSED E-02 ELEVATION Plan - Proposed · 17 Jul 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E1 - DR - A - 2101 - R10 ELEVATIONS PROPOSED E-01 STREETSCAPE ELEVATION Plan - Proposed · 17 Jul 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A - 2003 - R10 PLANS PROPOSED ROOF, SECOND Plan - Proposed · 17 Jul 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A - 2002 - R10 PLANS PROPOSED GROUND, BASEMENT, FIRST Plan - Proposed · 17 Jul 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A - 2001 - R10 PLANS PROPOSED SITE PLAN PROPOSED Plan - Proposed · 17 Jul 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -1001 R8 PLANS EXISTING SITE PLAN EXISTING Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A - 1002 R8 PLANS EXISTING GROUND, BASEMENT, FIRST Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -1003 R8 PLANS EXISTING ROOF, SECOND Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E1 - DR - A -1101 R8 ELEVATIONS EXISTING E-01 STREETSCAPE ELEVATION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E2 - DR - A -1102 R8 ELEVATIONS EXISTING E-02 ELEVATION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E3 - DR - A -1103 R8 ELEVATIONS EXISTING E-03 ELEVATION, ELEVATION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - S1 - DR - A -1201 R8 SECTIONS EXISTING BUILDING SECTION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - S2 - DR - A-1202 R8 SECTIONS EXISTING BUILDING SECTION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -1302 R8 INTERNAL ELEVATIONS IE-05 01, 02, 03, 04, IE-06 01, IE-08 01, IE- 07 01, GROUND Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A - 1303 R8 INTERNAL ELEVATIONS IE-09 01, 02, 03, 04, IE-10 01, IE-11 01, FIRST Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -1304 R8 INTERNAL ELEVATIONS IE-12 01, 02, 03, 04, IE-13 01, IE-14 01, SECOND Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -2001 R8 PLANS PROPOSED SITE PLAN PROPOSED Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -2002 R8 PLANS PROPOSED GROUND, BASEMENT, FIRST Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -2003 R8 PLANS PROPOSED ROOF, SECOND Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E1 - DR - A -2101 R8 ELEVATIONS PROPOSED E-01 STREETSCAPE ELEVATION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E2 - DR - A -2102 R8 ELEVATIONS PROPOSED E-02 ELEVATION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - E3 - DR - A -2103 R8 ELEVATIONS PROPOSED E-03 ELEVATION, ELEVATION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - S1 - DR - A -2201 R8 SECTIONS PROPOSED BUILDING SECTION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - S2 - DR - A -2202 R8 SECTIONS PROPOSED BUILDING SECTION Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A-2301 R8 INTERNAL ELEVATIONS IE-01 01, 02, 03, 04, IE-02 01, IE-03 01, IE- 04 01, BASEMEN Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -2302 R8 INTERNAL ELEVATIONS IE-05 01, 02, 03, 04, IE-06 01, IE-08 01, IE- 07 01, GROUND Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -2303 R8 INTERNAL ELEVATIONS IE-09 01, 02, 03, 04, IE-10 01, IE-11 01, IE- 16 01, FIRST Plan - Superseded · 22 Apr 2026 View ↗ PDF 421-SE1 6EZ - URB - ZZ - XX - DR - A -2304 R8 INTERNAL ELEVATIONS IE-12 01, 02, 03, 04, IE-13 01, IE-14 01, SECOND Plan - Superseded · 22 Apr 2026 View ↗ PDF THE LOCATION PLAN Plan - Superseded · 20 Apr 2026 View ↗ PDF ENG-2509-SK-02 P4 OUTLINE SERVICES DESIGN - FIRST & SECOND FLOORS Plan - Superseded · 20 Apr 2026 View ↗ PDF ENG-2509-SK-01 P4 OUTLINE SERVICES DESIGN - BASEMENT & GROUND FLOORS Plan - Superseded · 20 Apr 2026 View ↗

All documents on the council site ↗

Important details

Council
Southwark
Application type
Householder Application
Postcode
SE1 6EZ
Received
20 Apr 2026
Validated
7 May 2026
Ward
St Georges
Parish
Borough, Bankside And Walworth
Case officer
Show
Target decision
1 Jul 2026
Applicant
Show
Agent
Urbanist Architecture

Consultation & key dates

Env. assessment
No
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 performance
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