Postcode record · Waltham Forest
E17 4SN.
E17 4SN has 87 known premises and 38 planning records — 28 approved of 38 decided (73.7%). 38 EPC records.
Postcode E17 4SN · boundary not held, centred on the postcodeApprovedRefusedOther60 on the map — every match
At a glance · this postcodeWaltham Forest profile →
87
Premises
known addresses (UPRNs)
38
Applications
38 decided
73.7%
Approval rate
28 approved · 6 refused
62 days
Median decision time
average 227 days · 38 dated decisions
38
EPC records
ratings C 13 · D 19 · E 5 · G 1
60
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 4SN has 87 known premises and 38 planning records — 28 approved of 38 decided (73.7%). 38 EPC records.
Premises (18 of 87 shown)
Name
Details
UPRN 10009145545
UPRN 10009145546
UPRN 10009145547
UPRN 10009145548
UPRN 10009145549
UPRN 10025297982
UPRN 10091186236
UPRN 100022979809
UPRN 100022980603
UPRN 100022980635
UPRN 10009145545
UPRN 10009145546
UPRN 10009145547
Show all 10 rows
UPRN 10009145548
UPRN 10009145549
UPRN 10025297982
UPRN 10091186236
UPRN 100022979809
UPRN 100022980603
UPRN 100022980635
Planning
What happened?
38 planning applications across the postcode; 28 approved of 38 decided (73.7%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Construction of single storey wraparound rear extension.
45 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Zarina Ali
Householder Planning
Approved
2025-09-04
Construction of a rear dormer roof extension including raising of the roof ridge height , extension above the existing two storey rear outrigger, installation of two roof-lights to the front roof slope and replacement front boundary treatment.
33 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Hughie Johnston
Householder Planning
Approved
2025-07-08
Construction of a single storey wraparound extension, single storey porch extension and roof extension including raising the ridge, rear dormer and extension above two storey outrigger. Conversion of garage to habitable space, installation of three roof lights to the front, external insulation, repl
35 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Hughie Johnston
Householder Planning
Approved
2025-03-06
Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximum height of 3.70m and an eaves height of 3.00m.
5 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Sarah Creasy
Prior Approval - Larger Home Extension
Not required
2025-01-27
Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximum height of 3.00m and an eaves height of 2.85m.
7 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Yiyang He
Prior Approval - Larger Home Extension
Approved
2025-01-10
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof (with French doors and safety railings), together with installation of two roof lights to front roof slope.
75 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Cyrus Wong
Certificate of Lawful Development - Proposed
Approved
2024-11-15
Construction of a single storey rear extension and alterations to the fenestration at first floor rear elevation comprising of replacement windows.
75 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Sarah Creasy
Householder Planning
Refused
2024-11-05
Construction of a single-storey rear and infill extension. Conversion of the existing domestic garage into habitable living space. Alterations to the fenestration involving the installation of replacement windows to the front and rear elevations, new front door, application of insulated rendering to
35 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Zarina Ali
Householder Planning
Approved
2024-04-02
Construction of single-storey wraparound rear extension.
37 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Zarina Ali
Householder Planning
Approved
2024-02-14
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof and roof extension above two storey outrigger, with installation of two roof lights to front roof slope. Construction of a single storey rear extension and single storey rear infill extension.
35 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Adam Brown
Certificate of Lawful Development - Proposed
Approved
2023-11-28
Construction of single storey wraparound rear extension.
45 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Zarina Ali
Approved
2025-09-04
More
Householder Planning
Construction of a rear dormer roof extension including raising of the roof ridge height , extension above the existing two storey rear outrigger, installation of two roof-lights to the front roof slope and replacement front boundary treatment.
33 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Hughie Johnston
Approved
2025-07-08
More
Householder Planning
Construction of a single storey wraparound extension, single storey porch extension and roof extension including raising the ridge, rear dormer and extension above two storey outrigger. Conversion of garage to habitable space, installation of three roof lights to the front, external insulation, repl
35 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Hughie Johnston
Approved
2025-03-06
More
Householder Planning
Show all 10 rows
Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximum height of 3.70m and an eaves height of 3.00m.
5 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Sarah Creasy
Not required
2025-01-27
More
Prior Approval - Larger Home Extension
Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximum height of 3.00m and an eaves height of 2.85m.
7 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Yiyang He
Approved
2025-01-10
More
Prior Approval - Larger Home Extension
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof (with French doors and safety railings), together with installation of two roof lights to front roof slope.
75 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Cyrus Wong
Approved
2024-11-15
More
Certificate of Lawful Development - Proposed
Construction of a single storey rear extension and alterations to the fenestration at first floor rear elevation comprising of replacement windows.
75 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Sarah Creasy
Refused
2024-11-05
More
Householder Planning
Construction of a single-storey rear and infill extension. Conversion of the existing domestic garage into habitable living space. Alterations to the fenestration involving the installation of replacement windows to the front and rear elevations, new front door, application of insulated rendering to
35 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Zarina Ali
Approved
2024-04-02
More
Householder Planning
Construction of single-storey wraparound rear extension.
37 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Zarina Ali
Approved
2024-02-14
More
Householder Planning
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof and roof extension above two storey outrigger, with installation of two roof lights to front roof slope. Construction of a single storey rear extension and single storey rear infill extension.
35 Byron Road, Walthamstow, London, E17 4SN · premises record
Officer Adam Brown
Approved
2023-11-28
More
Certificate of Lawful Development - Proposed
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 87 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D768 · covers 87 of 87 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D769 · covers 87 of 87 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D770 · covers 87 of 87 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D768 · covers 87 of 87 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D769 · covers 87 of 87 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Other Article 4 Direction Area · reference A4D770 · covers 87 of 87 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 9 applications
Case officer on 3 applications
Case officer on 2 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 9 applications
Case officer on 3 applications
Case officer on 2 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 precedent38 applications and 60 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy38 EPC records; ratings C: 13, D: 19, E: 5, G: 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.
13 intent signals recorded in this postcode
Struggling director · Portfolio seller · Price decline · Charge registered · Repeat sale · EPC F/G · Lapsed consent
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.