Postcode record · Westminster
W9 3BN.
W9 3BN has 158 known premises and 12 planning records — 3 approved of 10 decided (30%). 81 EPC records.
No OS boundary is held for this postcode yet, so no shape is drawn.
At a glance · this postcodeWestminster profile →
158
Premises
known addresses (UPRNs)
12
Applications
10 decided
30%
Approval rate
3 approved · 5 refused
81
EPC records
ratings C 35 · D 39 · E 6 · F 1
0
Mapped applications
shape not available
Postcode unit boundary from Ordnance Survey; premises and applications inside it. Aggregates describe the area, not any single premises.
Property
What is it?
W9 3BN has 158 known premises and 12 planning records — 3 approved of 10 decided (30%). 81 EPC records.
Premises (18 of 158 shown)
Name
Details
UPRN 10033526746
UPRN 10033548740
UPRN 10033551730
UPRN 10033552766
UPRN 10033552774
UPRN 10033552775
UPRN 10033552776
UPRN 10033552777
UPRN 10033556480
UPRN 10033556481
UPRN 10033526746
UPRN 10033548740
UPRN 10033551730
Show all 10 rows
UPRN 10033552766
UPRN 10033552774
UPRN 10033552775
UPRN 10033552776
UPRN 10033552777
UPRN 10033556480
UPRN 10033556481
Planning
What happened?
12 planning applications across the postcode; 3 approved of 10 decided (30%). Latest 12 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Erection of a single-storey ground floor rear/side extension.
193A Portnall Road London W9 3BN · premises record
Applicant Mr Lesflores · Officer Stuart Croll
Full Planning Permission Application
Approved
2026-02-16
Construction of a full-width rear dormer extension to provide additional habitable accommodation at roof level, including extension of party walls in matching materials, associated alterations and installation of sash windows.
135 Portnall Road London W9 3BN · premises record
Full Planning Permission Application
Refused
2025-07-10
Replacement of all existing windows and selected doors with new slimline uPVC sash and casement windows and composite doors, include minor enlargement of some rear openings.
135 Portnall Road London W9 3BN · premises record
Full Planning Permission Application
Approved
2025-07-10
Installation of railings to existing first floor roof terrace.
143B Portnall Road London W9 3BN · premises record
Full Planning Permission Application
Withdrawn
2020-06-04
Use of ground, first and second floors as three self contained flats, erection of dormer to rear roof slope and installation of two rooflights to front roof slope.
135 Portnall Road London W9 3BN · premises record
Full Planning Permission Application
Refused
2018-04-04
Erection of rear dormer roof extension and installation of 2 velux rooflights to front elevation.
135 Portnall Road London W9 3BN · premises record
Certificate of Lawfulness (proposed)
Refused
2014-09-29
Loft conversion to create an additional unit.
187 Portnall Road London W9 3BN · premises record
Conservation Area Consent Appl (CAC)
Not required
2013-02-13
Installation of rear dormer and rooflights in the front roofslope in connection with the creation of an additional self-contained flat at second and third floor levels.
187 Portnall Road London W9 3BN · premises record
Full Planning Permission Application
Refused
2013-02-13
Erection of dormer window to rear roof slope and installation of two rooflights to the front roof slope in connection with enlargement of second floor flat.
143 Portnall Road London W9 3BN · premises record
Full
Unknown
2010-04-09
Retrospective permission for the installation of a small window in the side elevation of a rear extension, at second floor level.
Flat 3 159C Portnall Road London W9 3BN · premises record
Full Planning Permission Application
Approved
2003-07-04
Erection of a single-storey ground floor rear/side extension.
193A Portnall Road London W9 3BN · premises record
Applicant Mr Lesflores · Officer Stuart Croll
Approved
2026-02-16
More
Full Planning Permission Application
Construction of a full-width rear dormer extension to provide additional habitable accommodation at roof level, including extension of party walls in matching materials, associated alterations and installation of sash windows.
135 Portnall Road London W9 3BN · premises record
Refused
2025-07-10
More
Full Planning Permission Application
Replacement of all existing windows and selected doors with new slimline uPVC sash and casement windows and composite doors, include minor enlargement of some rear openings.
135 Portnall Road London W9 3BN · premises record
Approved
2025-07-10
More
Full Planning Permission Application
Show all 10 rows
Installation of railings to existing first floor roof terrace.
143B Portnall Road London W9 3BN · premises record
Withdrawn
2020-06-04
More
Full Planning Permission Application
Use of ground, first and second floors as three self contained flats, erection of dormer to rear roof slope and installation of two rooflights to front roof slope.
135 Portnall Road London W9 3BN · premises record
Refused
2018-04-04
More
Full Planning Permission Application
Erection of rear dormer roof extension and installation of 2 velux rooflights to front elevation.
135 Portnall Road London W9 3BN · premises record
Refused
2014-09-29
More
Certificate of Lawfulness (proposed)
Loft conversion to create an additional unit.
187 Portnall Road London W9 3BN · premises record
Not required
2013-02-13
More
Conservation Area Consent Appl (CAC)
Installation of rear dormer and rooflights in the front roofslope in connection with the creation of an additional self-contained flat at second and third floor levels.
187 Portnall Road London W9 3BN · premises record
Refused
2013-02-13
More
Full Planning Permission Application
Erection of dormer window to rear roof slope and installation of two rooflights to the front roof slope in connection with enlargement of second floor flat.
143 Portnall Road London W9 3BN · premises record
Unknown
2010-04-09
More
Full
Retrospective permission for the installation of a small window in the side elevation of a rear extension, at second floor level.
Flat 3 159C Portnall Road London W9 3BN · premises record
Approved
2003-07-04
More
Full Planning Permission Application
Building control
Building-control applications and notices in this postcode, from the council register.
Name
Details
Single storey rear extension. · received 29 May 2026 · Compliance Building Control Ltd
Removal of the chimney breast in the living room. · received 17 Apr 2026 · Plans Approved Conditionally
Internal reconfigurations of an existing HMO to facilitate 10 bedrooms with amenity spaces. · received 10 Nov 2025 · London Building Control Ltd
Conversion of existing four storey dwelling into 10 bedroom HMO · received 12 Jun 2025 · LB Building Control Ltd
Dormer Loft Conversion · received 12 Aug 2024 · Complete Building Control Ltd
First floor flat: Re-location of 2 doors; main door to flat and an internal bedroom door. · received 20 Jun 2023 · Mr Laurence Taylor
Ground floor rear/side infill extension, internal alterations and refurbishement of existing ground floor flat including removal walls & chimney breasts, fit-out of new kitchen & bathrooms and assocaited works.
Single storey rear extension. · received 29 May 2026 · Compliance Building Control Ltd
Removal of the chimney breast in the living room. · received 17 Apr 2026 · Plans Approved Conditionally
Internal reconfigurations of an existing HMO to facilitate 10 bedrooms with amenity spaces. · received 10 Nov 2025 · London Building Control Ltd
Show all 7 rows
Conversion of existing four storey dwelling into 10 bedroom HMO · received 12 Jun 2025 · LB Building Control Ltd
Dormer Loft Conversion · received 12 Aug 2024 · Complete Building Control Ltd
First floor flat: Re-location of 2 doors; main door to flat and an internal bedroom door. · received 20 Jun 2023 · Mr Laurence Taylor
Ground floor rear/side infill extension, internal alterations and refurbishement of existing ground floor flat including removal walls & chimney breasts, fit-out of new kitchen & bathrooms and assocaited works.
Place
What affects it?
Designations are shown per premises today (open any premises above); the postcode-level designation summary is built with the borough entity run. Use the map's designations filter to see them over the postcode now.
People
Who is involved?
Named on the latest 12 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 2 applications
Applicant on 2 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 2 applications
Agent on 2 applications
Agent on 1 application
Applicant on 2 applications
Applicant on 2 applications
Applicant on 2 applications
Show all 10 rows
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 2 applications
Agent on 2 applications
Agent on 1 application
Development
What could it become?
Planning precedent12 applications and 0 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy81 EPC records; ratings C: 35, D: 39, E: 6, F: 1.
What is not assertedNo capacity, value or ownership claim is made at area level; those belong to individual premises records and their evidence.
Intent signals · Planning Atlas Pro
Ownership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
25 intent signals recorded in this postcode
Beatable refusal · Charge registered · Portfolio seller · Price decline · EPC F/G · Repeat sale · Application withdrawn · Long hold · Ageing director
Subscribe to see the signals → Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.