Postcode record · Southwark
SE21 8BN.
SE21 8BN has 14 known premises and 11 planning records — 9 approved of 10 decided (90%). 12 EPC records.
No OS boundary is held for this postcode yet, so no shape is drawn.
At a glance · this postcodeSouthwark profile →
14
Premises
known addresses (UPRNs)
11
Applications
10 decided
90%
Approval rate
9 approved · 0 refused
12
EPC records
ratings B 1 · C 7 · D 3 · E 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?
SE21 8BN has 14 known premises and 11 planning records — 9 approved of 10 decided (90%). 12 EPC records.
Premises
Name
Details
UPRN 200003435674
UPRN 200003435675
UPRN 200003435676
UPRN 200003435677
UPRN 200003435678
UPRN 200003435679
UPRN 200003435680
UPRN 200003435681
UPRN 200003435682
UPRN 200003435683
UPRN 200003435674
UPRN 200003435675
UPRN 200003435676
Show all 10 rows
UPRN 200003435677
UPRN 200003435678
UPRN 200003435679
UPRN 200003435680
UPRN 200003435681
UPRN 200003435682
UPRN 200003435683
Planning
What happened?
11 planning applications across the postcode; 9 approved of 10 decided (90%). Latest 11 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Construction of a two-storey side extension
7 Alleyn Crescent London Southwark SE21 8BN · premises record
Householder Application
Under consideration/assessment
2026-04-21
Amendment agreed by email 26.03.2026. Works to tree subjec to to TPO 581: T1- whitebeam tree. 30% reduction equating to up to 3m in any one direction, back to suitable branch junctions.
4 Alleyn Crescent London Southwark SE21 8BN · premises record
—
Approved
2026-02-02
T243 [Downy Birch] - to be removed and stump treated. Tree in moribund state, large diameter deadwood within canopy of tree and visible decline. no signs of fruiting bodies at time of inspection. Replacement tree to be planted on site, fastigiate species (non-birch) and root barrier to be used to mitigate against direct damage to adjacent wall.
14 Alleyn Crescent London Southwark SE21 8BN · premises record
Applicant MR Philip Louis · Officer Liam Bullen
Tree works 5 day notification
Approved
2025-02-24
T250 (Ashleaf maple) - Straight fell, stump to be left at 1m above ground level. Dead tree Tree to be replaced by March 2026 T246 (ashleaf maple) - Sectional dismantle tree. stump to be left at 1m above ground level. very poor vitality, inner canopy dead and large stem wound exposing decay. Tree to be replaced by March 2026
14 Alleyn Crescent London Southwark SE21 8BN · premises record
Applicant MR Philip Louis · Officer Liam Bullen
Tree works 5 day notification
Approved
2025-02-20
Specie and Location of Tree: A Whitebeam tree approximately 9m in height, situated in the small front garden (see plan). The tree is very dense and wide spreading. Description of Dulwich Estates Approved Works: Crown thin by 25% including the removal of dead wood and necessary shortening of long lateral branches particularly towards the house. The height and basic shape should be retained.
12 Alleyn Crescent London Southwark SE21 8BN · premises record
Applicant Ben Turnbull · Officer Liam Bullen
Works to a Tree with a TPO
Approved
2022-07-11
Converting garage into store/kitchen plus construction of a single storey side extension.
1 Alleyn Crescent London Southwark SE21 8BN · premises record
Householder Application
Approved
2021-06-28
T1 Sycamore tree - Crown reduce a 12m tree by 2m in height to leave a 10m tree and crown thin by up to 25% T2 Neighbours Conifers - Tip back lateral growth by 2m over garden maintaining green foliage
7 Alleyn Crescent London Southwark SE21 8BN · premises record
Works to a Tree with a TPO
Approved
2021-06-01
Construction of a ground floor single storey side extension and dormer extension in rear roof slope.
14 Alleyn Crescent London SE21 8BN · premises record
Householder Application
Approved
2017-08-25
3 x Eucalyptus Trees - rear garden to fell and stump grind; To replant with 2 x Betula Jaaquemontii Trees
1 Alleyn Crescent London SE21 8BN · premises record
Works to a Tree in a Conservation Area
Withdrawn
2016-01-04
Tree ID 5780 - Whitebeam tree approximately 8.5m in height, situated in the front garden. Two smaller limbs to be removed on the southern side and the tree to be trimmed all over, reducing longer growths by up to 1m to improve shape and size.
12 Alleyn Crescent London Southwark SE21 8BN · premises record
—
Approved
—
Construction of a two-storey side extension
7 Alleyn Crescent London Southwark SE21 8BN · premises record
Under consideration/assessment
2026-04-21
More
Householder Application
Amendment agreed by email 26.03.2026. Works to tree subjec to to TPO 581: T1- whitebeam tree. 30% reduction equating to up to 3m in any one direction, back to suitable branch junctions.
4 Alleyn Crescent London Southwark SE21 8BN · premises record
Approved
2026-02-02
More
—
T243 [Downy Birch] - to be removed and stump treated. Tree in moribund state, large diameter deadwood within canopy of tree and visible decline. no signs of fruiting bodies at time of inspection. Replacement tree to be planted on site, fastigiate species (non-birch) and root barrier to be used to mitigate against direct damage to adjacent wall.
14 Alleyn Crescent London Southwark SE21 8BN · premises record
Applicant MR Philip Louis · Officer Liam Bullen
Approved
2025-02-24
More
Tree works 5 day notification
Show all 10 rows
T250 (Ashleaf maple) - Straight fell, stump to be left at 1m above ground level. Dead tree Tree to be replaced by March 2026 T246 (ashleaf maple) - Sectional dismantle tree. stump to be left at 1m above ground level. very poor vitality, inner canopy dead and large stem wound exposing decay. Tree to be replaced by March 2026
14 Alleyn Crescent London Southwark SE21 8BN · premises record
Applicant MR Philip Louis · Officer Liam Bullen
Approved
2025-02-20
More
Tree works 5 day notification
Specie and Location of Tree: A Whitebeam tree approximately 9m in height, situated in the small front garden (see plan). The tree is very dense and wide spreading. Description of Dulwich Estates Approved Works: Crown thin by 25% including the removal of dead wood and necessary shortening of long lateral branches particularly towards the house. The height and basic shape should be retained.
12 Alleyn Crescent London Southwark SE21 8BN · premises record
Applicant Ben Turnbull · Officer Liam Bullen
Approved
2022-07-11
More
Works to a Tree with a TPO
Converting garage into store/kitchen plus construction of a single storey side extension.
1 Alleyn Crescent London Southwark SE21 8BN · premises record
Approved
2021-06-28
More
Householder Application
T1 Sycamore tree - Crown reduce a 12m tree by 2m in height to leave a 10m tree and crown thin by up to 25% T2 Neighbours Conifers - Tip back lateral growth by 2m over garden maintaining green foliage
7 Alleyn Crescent London Southwark SE21 8BN · premises record
Approved
2021-06-01
More
Works to a Tree with a TPO
Construction of a ground floor single storey side extension and dormer extension in rear roof slope.
14 Alleyn Crescent London SE21 8BN · premises record
Approved
2017-08-25
More
Householder Application
3 x Eucalyptus Trees - rear garden to fell and stump grind; To replant with 2 x Betula Jaaquemontii Trees
1 Alleyn Crescent London SE21 8BN · premises record
Withdrawn
2016-01-04
More
Works to a Tree in a Conservation Area
Tree ID 5780 - Whitebeam tree approximately 8.5m in height, situated in the front garden. Two smaller limbs to be removed on the southern side and the tree to be trimmed all over, reducing longer growths by up to 1m to improve shape and size.
12 Alleyn Crescent London Southwark SE21 8BN · premises record
Approved
—
More
—
Building control
Building-control records are not yet collected for Southwark — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
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 11 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Development
What could it become?
Planning precedent11 applications and 0 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy12 EPC records; ratings B: 1, C: 7, D: 3, E: 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.
Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.