123 Cowley Road Mortlake London SW14 8QD Data via plota.co.uk

PA26/1322 - Full Application Approved
Extensions & alterations

Proposal

Single-storey rear/infill extension. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
28 Apr 2026
✓
Consultation
8 May 2026
✓
Approved
18 Jun 2026

Approved on 18 Jun 2026 · Delegated Decision · Last checked 12 Jul 2026

Documents

View the documents on the council's website ↗

Site constraints 7

Cowley Road 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 ↗
In flood zones plus climate change
Inside the extent flood zones 2 and 3 could reach with climate change: the Central allowance for the 2080s on rivers, the Upper End allowance for sea level rise to 2125. From rivers and the sea. Defences are not counted.
The Environment Agency flood map for planning. Councils use it to decide when a flood risk assessment and the sequential test are needed. It is indicative and does not show whether a particular property will flood.
Flood map ↗
Archaeological priority area
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Richmond 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 715 m away: Thames Tideway Tunnel
The site is 715 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted.
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 ↗
Also on the record
Inside the Richmond upon Thames built-up area; Public transport access: PTAL 3 (moderate), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, 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 4

Last sold for £620,000 in April 2023. Flat or maisonette, leasehold.

More than one property is recorded at this address: HM Land Registry does not always give the flat or unit.

5 April 2023£620,000
7 June 2013£475,000
25 March 2002£245,000Terraced house
9 March 1998£150,000Terraced house

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

Building

Floor area64 m² (689 sq ft)
Energy ratingD (62 out of 100), could reach C
PropertyEnd-terrace maisonette, 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 October 2022, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Richmond upon Thames
Application type
Full Application
Postcode
SW14 8QD
Received
28 Apr 2026
Validated
28 Apr 2026
Ward
Mortlake & Barnes Common Ward [MRB]
Case officer
Show
Target decision
23 Jun 2026
Decision
Granted Permission
Decision date
18 Jun 2026
Decision level
Delegated Decision
Applicant
Show
Agent
MUHAMMAD HAIDER

How this decision compares

Decided in 51 days from validation, about the council's usual 48 days. Approved, as 86% of extensions here are.

78%decided within 8 weeks
86%approved
1,289decided in the last year

Plota live figures for extensions decided by Richmond upon Thames in the last twelve months, from validation. Richmond upon Thames decision record →

Consultation & key dates

Alt. reference
PP-14855264
Comments by
29 May 2026
Site or press notice
8 May 2026
Statutory expiry
20 May 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
80 White Hart Lane Barnes London
Proposed single storey rear extension 3.0m.
PA25/2447
2025 Approved
76, White Hart Lane, London, SW13 0PZ
Extension to existing basement, forming additional habitable space. Enlargement of existi…
PA25/1841
2025 Approved
99 White Hart Lane, Barnes, SW13 0JL
The change of use of communal land to Class E (day nursery) to the rear of the site, rete…
25/0043/FUL
2025 Approved
4 Portobello Terrace North Worple Way Mortlake London SW14 8AF
PROPOSED INFILL EXTENSION UNDER EXISTING FIRST FLOOR EXTENSION
25/0040/HOT
2024 Approved
66 First Avenue Mortlake London SW14 8SR
Replacement of rear door on ground floor outrigger, rear dormer above outrigger, repositi…
24/2919/PS192
2024 Approved
68 White Hart Lane Barnes London SW13 0PZ
Replacement of Shopfront with double glazed safety glass. Sill level raised by 300mm.
24/2964/FUL
2024 Approved
Barnes Hospital South Worple Way East Sheen London SW14 8SU
Details pursuant to condition U0167882 - NS04 AMS and Tree Protection, of planning permis…
22/3758/DD02
2024 Approved
Barnes Hospital South Worple Way East Sheen London SW14 8SU
Details pursuant to condition U0167879 - NS01 Bat Survey, of planning permission 22/3758/…
22/3758/DD01
2024 Withdrawn
Barnes Hospital South Worple Way East Sheen London SW14 8SU
Details pursuant to condition U0167880 - NS02 GLAAS Written Scheme of Investigation (part…
22/3758/DD03
2024 Approved
83 Second Avenue Mortlake London SW14 8QF
Proposed Loft Extension. Raising of ridge in line with attached property. Rear dormer to…
24/0234/HOT
2023 Refused
83 Second Avenue Mortlake London SW14 8QF
Proposed loft extension comprising; raising of ridge, rear dormer to main body of house a…
23/3101/HOT
2023 Approved
4 Portobello Terrace North Worple Way Mortlake London SW14 8AF
Details pursuant to condition U0150413 - Construction Method Statement, of planning permi…
22/1471/DD01
2022 Approved
4 Portobello Terrace North Worple Way Mortlake London SW14 8AF
Proposed basement extension and new lightwells to front and rear of the property.
22/1471/HOT
2022 Approved
Barnes Hospital South Worple Way East Sheen London SW14 8SU
London Plane (T1) - reduce bulky parts of canopy back in by approx 1-2m from tips near to…
22/T0729/TPO
2022 Approved
Barnes Hospital South Worple Way East Sheen London SW14 8SU
Pine (T1) - prune back large damaged branch to suitable growth point and reduce canopy ba…
22/T0731/TCA
2022 Approved
2 The Retreat East Sheen London SW14 8SS
Installation of air sourced heat pump and associated enclosure on rear elevation of the p…
22/2408/HOT
2022 Approved
52 First Avenue Mortlake London SW14 8SR
Ground floor single storey rear and side extension and 2 new roof lights to main roof to…
22/2347/HOT
2022 Approved
7 Buxton Road East Sheen London SW14 8SY
Rear dormer roof extension. Rooflights to front elevation
22/1664/PS192
2022 Withdrawn
92 White Hart Lane Barnes London SW13 0QA
Addition to the rear roofs, comprising a full width dormer on the rear rooflope and flat…
22/1744/PS192
2022 Approved
Barnes Hospital South Worple Way East Sheen London SW14 8SU
T13 - willow tree to pollard the willow tree back to old wounds
22/T0418/TCA
2016 Refused
68 First Avenue Mortlake London SW14 8SR
Details pursuant to condition DV43B (Parking Permits Restriction - GRAMPIAN) of planning…
14/5366/DD02
2016 Approved
68 First Avenue Mortlake London SW14 8SR
Details pursuant to condition DV18A (Refuse arrangements) and DV27A (Recycling - Details…
14/5366/DD01
2016 Approved
2 Portobello Terrace North Worple Way Mortlake London SW14 8AF
Single storey rear extension.
16/0761/HOT
2016 Approved
70A White Hart Lane Barnes London SW13 0PZ
Retrospective application for the insertion of a half glazed door with fixed external bal…
16/0161/FUL
2016 Refused
51 First Avenue Mortlake London SW14 8SP
Partial demolition of the existing rear outrigger (75%) and rebuild with a new side and r…
16/0021/PS192
Richmond upon Thames
Planning Authority Score
4.4/10
Below average
#182 of 296 councils
Relevant to this application:
Householder decisions

Richmond upon Thames ranks #130 out of 296 councils for householder decision speed. Richmond upon Thames is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.

One of the strictest councils
only 82% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Richmond upon Thames decision statistics
Based on MHCLG data, the year to March 2026
81%
Overall approval rate
Below avg (87%) #257 of 296
82%
Householder approved
Below avg (90%) #268 of 296
69%
Decided in 8 weeks
Above avg (63%) #130 of 296
35%
Extended time limit
Below avg (41%) #104 of 296
68%
Minor dwellings approved
181 decided (1-9 homes)
100%
Major dwellings approved
3 decided (10+ homes)
47%
Change of use approved
17 decided
1,888
Total decisions
358 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.