2016
Greater London House 547-551 High Road Leytonstone Leytonstone E11 4PB
Application for a Lawful Development Certificate for a Proposed use or development.
581 High Road Leytonstone, Leytonstone, London, E11 4PB Data via plota.co.uk
252862 - Full Planning
Approved
Proposal
Construction of a mansard roof extension at main roof (retrospective) and conversion of existing mansard into one residential unit (1x1-bed) (Use Class C3) at third floor level. Data via plota.co.uk
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View original council record ↗Last checked
Application progress
✓
Received
3 Dec 2025
✓
Validated
22 Dec 2025
✓
Approved
17 Jul 2026
Approved on 17 Jul 2026 · Delegated · Last checked 19 Oct 2026
Documents 7
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 1
Application forms 1
Associated applications 2
Site constraints 6
Article 4 direction
Other Article 4 Direction Area. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Air quality management area: Waltham Forest AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Opportunity area
Where the London Plan expects significant growth.
Boundaries are indicative and the borough holds the detailed plan.
Also on the record
Radon affected area, class 2; Inside the Waltham Forest built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI), Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Building
Floor area42 m² (452 sq ft)
Energy ratingC (76 out of 100)
PropertyFlat, 3 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)
From the energy performance certificate lodged in August 2026, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate
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Other new applications on this street
17 Sept 2026Pending
589A High Road Leytonstone, Leytonstone, London, E11 4PB
Lawful Development Certificate (Proposed) - Change of use from 1 self- contained...
9 Sept 2026Pending
555 - 557 High Road Leytonstone, Leytonstone, London, E11 4PB
Change of use at ground floor from retail (Use Class E(a)) to mixed use retail a...
12 May 2026Pending
571 High Road Leytonstone, Leytonstone, London, E11 4PB
Construction of a second floor rear extension, mansard roof extension, replaceme...
13 Oct 2026Pending
650 - 652 High Road Leytonstone, Leytonstone, London, E11 3AA
Change of use from retail shop (Use Class E(a)) to gym/fitness centre (Use Class...
Nearby new applications
21 Oct 2026Pending
ARCH 287 Sansom Road, Leytonstone, London, E11 3HE
Alterations to the front and rear arches, construction of a single storey rear l...
20 Oct 2026Pending
22 Cheneys Road, Leytonstone, London, E11 3LN
Construction of dormer roof extension to main rear roof, including raising roof ...
15 Oct 2026Pending
27 Elsham Road, Leytonstone, London, E11 3JH
Construction of a single storey rear infill extension.
14 Oct 2026Pending
ST MARGARETS CHURCH, 31A Woodhouse Road, Leytonstone, London, E11 3NG
Works to trees protected by a preservation order. Plane (T1) - Pollard back to p...
13 Oct 2026Pending
1 Hampton Road, Leytonstone, London, E11 4BZ
Lawful Development Certificate (Proposed) - Construction of dormer roof extensio...
12 Oct 2026Pending
306 High Road Leytonstone, Leytonstone, London, E11 3HS
Alterations to the fenestration involving installation of replacement windows to...
Important details
- Council
- Waltham Forest
- Application type
- Full Planning
- Postcode
- E11 4PB
- Received
- 3 Dec 2025
- Validated
- 22 Dec 2025
- Ward
- Cathall
- Case officer
- Show
- Target decision
- 22 Jul 2026
- Decision
- Approved Subject to S106 Agreement
- Decision date
- 17 Jul 2026
- Decision level
- Delegated
- Applicant
- Show
- Agent
- Smith & Newton Architects Ltd
- Freehold owner
- Show
How this decision compares
Decided in 207 days from validation, 152 days slower than Waltham Forest's median of 55 for extensions. Approved, as 80% of extensions here are.
This one207d
Council55d
UK55d
84%decided within 8 weeks
80%approved
1,848decided in the last year
Plota live figures for extensions decided by Waltham Forest in the last twelve months, from validation. Waltham Forest decision record →
Consultation & key dates
- Statutory expiry
- 22 Jul 2026
Historical activity at this location
29 previous applications on record - archival context, not part of the live application.
This property
Previous applications at this address
2025
Approved
Submission of details pursuant to condition 6 (Cycle storage), condition 7 (Construction…
2025
Refused
Submission of details pursuant to condition 7 (Detailed Construction Logistics Plan) atta…
2021
Refused
Construction of mansard and dormer roof extensions to main roof to provide a 1 x 1-bedroo…
2021
Approved
Construction of single storey rear extension to facilitate change of use of retail unit o…
Within ~100m
Nearby activity
2025
22 Southwell Grove Road, Leytonstone, London, E11 4PP
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main…
2025
68a Cobden Road, Leytonstone, London, E11 3PE
Change of use from Class E to a mixed use cafe and indoor leisure venue (Class E(b)) with…
2025
Approved
476 High Road Leytonstone, Leytonstone, London, E11 3HN
Formation of a a self-contained commercial unit on upper floor with a lterations to front…
2025
527 - 529 High Road Leytonstone, Leytonstone, London, E11 4PB
Construction of a mansard roof extension to facilitate creation of a self contained flat…
2024
Refused
559 High Road Leytonstone, Leytonstone, London, E11 4PB
Construction of mansard roof extension and alterations to the existing first and second f…
2024
Approved
563a High Road Leytonstone, Leytonstone, London, E11 4PB
Construction of a first floor rear extension, removal of a rear first floor boundary wall…
2024
Refused
17 Lynn Mews, Leytonstone, London, E11 4QL
Construction of a mansard roof extension to main roof to create a second floor and instal…
2024
Refused
527 - 529 High Road Leytonstone, Leytonstone, London, E11 4PB
Construction of a mansard roof extension to provide a fourth storey level along with the…
2024
Approved
43 Southwell Grove Road, Leytonstone, London, E11 4PP
Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main…
2024
Refused
43 Southwell Grove Road, Leytonstone, London, E11 4PP
Construction of a single storey rear infill extension. Construction of first floor rear e…
2024
Refused
15 Lynn Mews, Leytonstone, London, E11 4QL
Construction of a mansard roof extension to facilitate the creation of an additional floo…
2023
Refused
527 - 529 High Road Leytonstone, Leytonstone, London, E11 4PB
Construction of a mansard roof extension to provide a fourth storey level along with the…
2023
Withdrawn
23 Lynn Mews, Leytonstone, London, E11 4QL
Construction of a mansard roof extension above the residential block with a balcony to fa…
2022
Refused
527 - 529 High Road Leytonstone, Leytonstone, London, E11 4PB
Construction of a mansard roof extension to provide a fourth storey level along with the…
2023
Approved
52a Southwell Grove Road, Leytonstone, London, E11 4PP
Lawful Development Certificate (Proposed) - Construction of a dormer roof extension to ma…
2022
Withdrawn
23 Lynn Mews, Leytonstone, London, E11 4QL
Construction of a first floor rear extension and mansard roof extension at 23 & 25 Lynn M…
2022
Refused
23 Lynn Mews, Leytonstone, London, E11 4QL
Construction of a first floor rear extension and mansard roof extension to facilitate the…
2022
Refused
589a High Road Leytonstone, Leytonstone, London, E11 4PB
Construction of a mansard roof extension and conversion of existing first and second floo…
2019
Approved
539 High Road Leytonstone,
Construction of mansard roof extension at 539 to 541 High Road Leytonstone to facilitate…
2022
Refused
589a High Road Leytonstone, Leytonstone, London, E11 4PB
Conversion of the existing first and second floor residential flat (1 x 4-bed) (Use class…
2016
Refused
46 Cobden Road, Leytonstone, London, E11 3PE
Construction of L-shaped dormer roof extension (with French doors and safety railings) to…
2016
Approved
31 Southwell Grove Road, Leytonstone, London, E11 4PP
Lawful development certificate (proposed) - Construction of dormer roof extension to main…
2016
Withdrawn
541 High Road Leytonstone, Leytonstone, London, E11 4PB
C.O.U from A1 to C3 dwellinghouse
2016
Refused
533a High Road Leytonstone, E11 4PB
Conversion of first floor from (1 x 1 bed) self-contained into (two x studio flats).
Waltham Forest
Planning Authority Score
5.6/10
Average
#116 of 296 councils
Relevant to this application:
Householder decisions
Waltham Forest is faster than most councils at deciding householder applications, ranking #80 out of 296. Only 22% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Waltham Forest is also one of the strictest councils - it refuses more householder applications than almost any other, with only 79% approved vs 90% nationally.
One of the strictest councils
only 79% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application.
View full council performance
Waltham Forest decision statistics
Based on MHCLG data, the year to March 2026
76%
Overall approval rate
Below avg (87%) #284 of 296
79%
Householder approved
Below avg (90%) #284 of 296
75%
Decided in 8 weeks
Above avg (63%) #80 of 296
22%
Extended time limit
Below avg (41%) #25 of 296
49%
Minor dwellings approved
113 decided (1-9 homes)
100%
Major dwellings approved
8 decided (10+ homes)
50%
Change of use approved
56 decided
1,391
Total decisions
332 refused in the year to March 2026
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Freehold owner and leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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581 High Road Leytonstone, Leytonstone, London, E11 4PB
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