4 Diamond Terrace, Greenwich, London, SE10 8QN Data via plota.co.uk

25/3525/HD - Householders Refused

Proposal

Construction of an L shaped ground floor extension, first floor rear extension along with replacement windows and replacement of roof tiles and associated rooflights (amended description) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
22 Oct 2025
✓
Validated
5 Nov 2025
✓
Consultation
10 Nov 2025
✗
Refused
18 Dec 2025
Appeal
Not lodged

Refused on 18 Dec 2025 · Delegation · Last checked 11 Oct 2026

Documents 20

Decision & officer reports 1

PDF Decision notice Decision Notice · 18 Dec 2025 View ↗

Statements & assessments 3

PDF Design access and heritage statement Document · 5 Nov 2025 View ↗ PDF Reasonable exception statement Document · 23 Oct 2025 View ↗ PDF Support statement Document · 23 Oct 2025 View ↗

Plans & drawings 11

PDF Existing elevations 2 Drawing · 23 Oct 2025 View ↗ PDF Existing gf & ff plans Drawing · 23 Oct 2025 View ↗ PDF Existing elevations 1 Drawing · 23 Oct 2025 View ↗ PDF Proposed window details Drawing · 23 Oct 2025 View ↗ PDF Site location plan Drawing · 23 Oct 2025 View ↗ PDF Existing roof & loft plan Drawing · 23 Oct 2025 View ↗ PDF Existing & proposed sections Drawing · 23 Oct 2025 View ↗ PDF Proposed roof & loft plans Drawing · 23 Oct 2025 View ↗ PDF Proposed elevations 2 Drawing · 23 Oct 2025 View ↗ PDF Proposed gf & ff plans Drawing · 23 Oct 2025 View ↗ PDF Proposed elevations 1 Drawing · 23 Oct 2025 View ↗

Application forms 2

PDF Application form full Application Form · 23 Oct 2025 View ↗ PDF Application form redacted Application Form · 23 Oct 2025 View ↗

Other documents 3

PDF Reports Report · 18 Dec 2025 View ↗ PDF Unknown Document · 11 Nov 2025 View ↗ PDF Correspondance Correspondence · 7 Nov 2025 View ↗

All documents on the council site ↗

Site constraints 11

Grade II listed: 1 and 2, Diamond Terrace Se10
List entry 1079014 · 30 m away · 17 more listed buildings within 150 m (2 Grade II*, 15 Grade II)
Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show the other 17 with distances
Historic England ↗
Blackheath conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Air quality management area: Greenwich 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.
Council record ↗
National infrastructure project 375 m away: Thames Tideway Tunnel
The site is 375 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, 544 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Radon affected area, class 2; World heritage site 188 m away: Maritime Greenwich; Scheduled monument 243 m away: West Grove, Conduit House, Blackheath; Inside the Greenwich built-up area; Public transport access: PTAL 3 (moderate), TfL 2023, for the 100 m square; Metropolitan Open Land 68 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt

Checked on 2 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, 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.

Sales history 1

Last sold for £1,650,000 in July 2025. Detached house, freehold.

17 July 2025£1,650,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area135 m² (1,453 sq ft)
Energy ratingE (52 out of 100), could reach B
PropertyDetached house, 6 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in January 2025, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Greenwich
Application type
Householders
Postcode
SE10 8QN
Received
22 Oct 2025
Validated
5 Nov 2025
Ward
GREENWICH PARK
Parish
Greenwich
Case officer
Show
Target decision
31 Dec 2025
Decision
Refuse
Decision date
18 Dec 2025
Decision level
Delegation
Applicant
Show
Agent
UNFOLD Architecture + Design Ltd

How this decision compares

Decided in 43 days from validation, 13 days faster than Greenwich's median of 56 for householder applications. Refused, as 20% of householder applications here are.

76%decided within 8 weeks
80%approved
534decided in the last year

Plota live figures for householder applications decided by Greenwich in the last twelve months, from validation. Greenwich decision record →

Public comments

No public comments yet.

Last counted 11 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14420826
Planning Portal ref
PP-14420826
Consultation
10 Nov 2025
Comments by
3 Dec 2025
Statutory expiry
31 Dec 2025
Env. assessment
No

Historical activity at this location

26 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2016 Approved
Ginko in rear garden - crown reduce by 25% back to previous reduction points
16/3643/TC
Within ~100m

Nearby activity

2025 Approved
14 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Extension of existing front lightwell including the demolition of front underground vault…
25/3798/HD
2025 Approved
14 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Extension of existing front lightwell including the demolition of front underground vault…
25/3799/L
2025 Withdrawn
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Installation of insulation material, ventilation eaves tray and black underlay support tr…
25/3530/HD
2025 Approved
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Installation of insulation material, ventilation eaves tray and black underlay support tr…
25/3531/L
2025 Approved
LANE HOUSE, 16 DIAMOND TERRACE, GREENWICH, LONDON, SE10 8QN
Statement of work G1 Himalayan Birch - Group of 3 trees across the front of the property…
25/3396/TP
2025 Withdrawn
LANE HOUSE, 16 DIAMOND TERRACE, GREENWICH, LONDON, SE10 8QN
Statement of work: T1 Maple - Rear LHB: Crown reduction - To reduce the overall canopy by…
25/3374/TC
2025 Approved
13 DIAMOND TERRACE, GREENWICH, LONDON, SE10 8QN
Lawson Cypress over growing into our garden and neighbours garden which is restricting na…
25/2962/TC
2025 Approved
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Installation of 8no. external and 2no. internal CCTV security cameras and associated work…
25/1136/L
2025 Approved
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Installation of 8no. external CCTV security cameras and associated works.
25/1135/HD
2025 Approved
1 WESTGROVE LANE, LONDON, SE10 8QP
Recombination of existing basement and ground floor flats so as to return these flats a s…
25/1350/F
2025 Approved
1 WESTGROVE LANE, LONDON, SE10 8QP
Recombination of existing basement and ground floor flats so as to return these flats a s…
25/1351/L
2025 Approved
14 DIAMOND TERRACE, GREENWICH, LONDON, SE10 8QN
Mountain Ash to front garden - reduce crown by 20% and deadwood. Magnolia to rear - remov…
25/1573/TC
2025 Approved
5 WESTGROVE LANE, GREENWICH, LONDON, SE10 8QP
Installation of roof mounted Solar Panels and improved roof access through the implementa…
25/0844/HD
2025 Approved
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Alterations to the existing side garage, including the removal of the existing front door…
25/0385/HD
2025 Approved
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Alterations to the existing side garage, including the removal of the existing front door…
25/0386/L
2025 Approved
15 WESTGROVE LANE, GREENWICH, LONDON, SE10 8QP
T1 1x Japanese spindle tree section fell as root system is affecting the outer wall troug…
25/0083/TP
2024 Approved
11 DIAMOND TERRACE, GREENWICH, LONDON, SE10 8QN
Construction of a rear dormer extension, insertion of 3.no front roof lights. Demolition…
24/3903/HD
2024 Approved
18 HYDE VALE, GREENWICH, LONDON, SE10 8QH
T1 Horse Chestnut ? fell to ground level, due to close location to the property and repai…
24/3377/TC
2024 Approved
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Complete replacement of the basement's tanking system and minor non-invasive works and as…
24/2628/L
2024 Approved
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Landscape works to rear garden including paving, the construction of sheds, pergolas and…
24/1217/HD
2016 Approved
36 Hyde Vale, Greenwich, London, SE10 8QH
Construction of a replacement side garage.
15/3172/F
2016 Approved
30 HYDE VALE, GREENWICH, LONDON, SE10 8QH
Beech in front garden - crown reduce by 30% - back to last reduction points.
16/0896/TC
2016 Approved
2 SUTERS COTTAGE, DIAMOND TERRACE, GREENWICH, LONDON, SE10 8QN
Construction of a new front porch.
16/0077/CP
2016 Approved
16 Hyde Vale, Greenwich, London, SE10 8QH
Removal of basement fireplace and preparation for installation of a log burner.
15/4005/L
2016 Approved
8 DIAMOND TERRACE, GREENWICH, LONDON, SE10 8QN
Crown reduce sycamore tree in rear garden back to last reduction points (approx 25%)
16/0229/TC
Greenwich
Planning Authority Score
5.4/10
Average
#123 of 296 councils
Relevant to this application:
Householder decisions

Greenwich is faster than most councils at deciding householder applications, ranking #76 out of 296. Only 29% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Greenwich is also one of the strictest councils - it refuses more householder applications than almost any other, with only 78% approved vs 90% nationally.

One of the strictest councils
only 78% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Greenwich decision statistics
Based on MHCLG data, the year to March 2026
77%
Overall approval rate
Below avg (87%) #278 of 296
78%
Householder approved
Below avg (90%) #287 of 296
75%
Decided in 8 weeks
Above avg (63%) #76 of 296
29%
Extended time limit
Below avg (41%) #49 of 296
60%
Minor dwellings approved
114 decided (1-9 homes)
100%
Major dwellings approved
13 decided (10+ homes)
66%
Change of use approved
195 decided
1,468
Total decisions
331 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

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.