Postcode record · Waltham Forest
E17 4SW.
E17 4SW has 55 known premises and 36 planning records — 21 approved of 36 decided (58.3%). 31 EPC records.
Postcode E17 4SW · boundary not held, centred on the postcodeApprovedRefusedOther36 on the map — every match
At a glance · this postcodeWaltham Forest profile →
55
Premises
known addresses (UPRNs)
36
Applications
36 decided
58.3%
Approval rate
21 approved · 13 refused
56 days
Median decision time
average 331 days · 36 dated decisions
31
EPC records
ratings B 2 · C 11 · D 14 · E 3 · F 1
36
Mapped applications
inside the postcode shape
Postcode unit boundary from Ordnance Survey; premises and applications inside it. Aggregates describe the area, not any single premises.
Property
What is it?
E17 4SW has 55 known premises and 36 planning records — 21 approved of 36 decided (58.3%). 31 EPC records.
Premises (18 of 55 shown)
Name
Details
UPRN 10009148052
UPRN 10009148053
UPRN 10009148054
UPRN 10009148055
UPRN 10009148056
UPRN 10009148057
UPRN 10093563093
UPRN 10093563094
UPRN 100022979803
UPRN 100022980299
UPRN 10009148052
UPRN 10009148053
UPRN 10009148054
Show all 10 rows
UPRN 10009148055
UPRN 10009148056
UPRN 10009148057
UPRN 10093563093
UPRN 10093563094
UPRN 100022979803
UPRN 100022980299
Planning
What happened?
36 planning applications across the postcode; 21 approved of 36 decided (58.3%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Construction of a two storey rear extension.
46 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Hughie Johnston
Householder Planning
Refused
2026-03-20
Construction of a first floor rear extension together with the installation of a ground floor window on the side elevation, ground floor doors and a first floor window on the rear elevation.
28 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Zara Raza
Householder Planning
Approved
2025-03-10
Lawful Development Certificate (Proposed) - Construction of a dormer roof extension to main rear roof, and roof extension above two storey outrigger, with installation of two roof lights to front roof slope.
2 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Elsie Morgan
Certificate of Lawful Development - Proposed
Approved
2025-02-04
Construction of a two storey side and rear extension.
16 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Kim Aukett
Householder Planning
Approved
2022-08-12
Construction of a two storey side extension and part single-storey part-two storey rear extension.
16 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Chloe To
Householder Planning
Refused
2022-03-14
Construction of single storey rear extension
70 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Chloe To
Householder Planning
Approved
2021-05-24
Extension of the front porch to align with the existing bay window and the installation of a new front door. Construction of ground and first floor rear extensions. Conversion of the loft into a habitable space (storage area), together with installation of four rooflights tofront and rear roof and a
36A Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Reina England
Householder Planning
Approved
2020-10-19
Submission of details pursuant to condition 9 (Refuse and recycling) attached to planning application reference (173230) dated 10/10/2018.
36A Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Reina England
Approval of Details Reserved by Condition
Approved
2020-09-09
Extension of the front porch to align with the existing bay window and the installation of a new front door. Construction of ground and first floor rear extensions. Conversion of the loft into a habitable space (storage area), together with installation of four rooflights tofront and rear roof and
36A Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Reina England
Householder Planning
Refused
2020-08-05
Variation of condition 9 (refuse and recycling) attached to planning permission reference 173230 granted 10/10/2018.
36A Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Reina England
S73 - Removal/Variation of Condition(s)
Approved
2020-06-30
Construction of a two storey rear extension.
46 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Hughie Johnston
Refused
2026-03-20
More
Householder Planning
Construction of a first floor rear extension together with the installation of a ground floor window on the side elevation, ground floor doors and a first floor window on the rear elevation.
28 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Zara Raza
Approved
2025-03-10
More
Householder Planning
Lawful Development Certificate (Proposed) - Construction of a dormer roof extension to main rear roof, and roof extension above two storey outrigger, with installation of two roof lights to front roof slope.
2 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Elsie Morgan
Approved
2025-02-04
More
Certificate of Lawful Development - Proposed
Show all 10 rows
Construction of a two storey side and rear extension.
16 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Kim Aukett
Approved
2022-08-12
More
Householder Planning
Construction of a two storey side extension and part single-storey part-two storey rear extension.
16 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Chloe To
Refused
2022-03-14
More
Householder Planning
Construction of single storey rear extension
70 Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Chloe To
Approved
2021-05-24
More
Householder Planning
Extension of the front porch to align with the existing bay window and the installation of a new front door. Construction of ground and first floor rear extensions. Conversion of the loft into a habitable space (storage area), together with installation of four rooflights tofront and rear roof and a
36A Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Reina England
Approved
2020-10-19
More
Householder Planning
Submission of details pursuant to condition 9 (Refuse and recycling) attached to planning application reference (173230) dated 10/10/2018.
36A Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Reina England
Approved
2020-09-09
More
Approval of Details Reserved by Condition
Extension of the front porch to align with the existing bay window and the installation of a new front door. Construction of ground and first floor rear extensions. Conversion of the loft into a habitable space (storage area), together with installation of four rooflights tofront and rear roof and
36A Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Reina England
Refused
2020-08-05
More
Householder Planning
Variation of condition 9 (refuse and recycling) attached to planning permission reference 173230 granted 10/10/2018.
36A Byron Road, Walthamstow, London, E17 4SW · premises record
Officer Reina England
Approved
2020-06-30
More
S73 - Removal/Variation of Condition(s)
Building control
Building-control records are not yet collected for Waltham Forest — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
Every mapped designation touching a premises in this postcode, with how many of its 55 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D768 · covers 55 of 55 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D769 · covers 55 of 55 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D770 · covers 55 of 55 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D768 · covers 55 of 55 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D769 · covers 55 of 55 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D770 · covers 55 of 55 premises. Some normally permitted changes may require planning permission.
Nearby postcodes and streets
Walk to the next area — linked where the Atlas has a record for it (pilot borough only for now).
People
Who is involved?
Named on the latest 30 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Case officer on 5 applications
Case officer on 3 applications
Case officer on 3 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 5 applications
Case officer on 3 applications
Case officer on 3 applications
Show all 10 rows
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent36 applications and 36 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy31 EPC records; ratings B: 2, C: 11, D: 14, E: 3, 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 ProOwnership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
11 intent signals recorded in this postcode
Portfolio seller · Repeat sale · Repeat refusal · EPC F/G · Long hold
Subscribe to see the signals →Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.