Planning application
PA26/1322
123 Cowley Road Mortlake London SW14 8QD
Proposal
Single-storey rear/infill extension.
As published by the council, reference PA26/1322
Timeline
Dates from the published record
-
15 Apr 2026
Received by Richmond upon Thames
-
28 Apr 2026
Validated
Checked as complete and ready for consideration.
-
18 Jun 2026
Decision issued: Granted Permission
-
26 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
-
05/2717/DD01 Granted
R/O 1 North Worple Way Mortlake Richmond Upon Thames SW14 8QG
Details pursuant to condition U07746 (external finish to eave)
-
PA26/1535 Refused
77, Cowley Road, London, SW14 8QD
Removal of existing timber box sashes, front casement windows and kitchen door. Replacement with UPVC windows and door.
-
PA26/2227 Awaiting decision
64 First Avenue Mortlake London SW14 8SR
The demolition of the existing ground floor rear extension, construction of replacement ground floor rear extension, new roof extension to existing flat roof of first floor outrigger with juliet balcony, and replacement windows to the rear of the property.
-
24/2268/HOT Refused
66 First Avenue Mortlake London SW14 8SR
The proposed works relate to alterations to the rear glazing and glass roof of the existing ground floor side infill extension and the erection of a rear dormer extension at loft level above the two-storey rear outrigger to a terraced house.
-
05/3713/HOT Granted
43 Second Avenue Mortlake Richmond Upon Thames SW14 8QF
Loft Conversion.
-
05/3923/HOT Granted
43 Second Avenue Mortlake Richmond Upon Thames SW14 8QF
Loft extension with rear mansard, sky lights to front roof slope and ridge to be raised to match neighbouring properties.
Other full applications applications
In Richmond upon Thames
-
PA26/1801 Granted
6, High Park Road, Kew
Replacement of all existing front windows of flats 1 and 2, with new timber, slim-line double-glazed, sliding-sash windows coloured white, and replacement of all existing side and rear windows with white UPVC double glazed windows. Replacement rear doors with new white, UPVC, triple-glazed units.
-
PA26/1140 Refused
outside 16-18 London Road, Twickenham
The proposed deployment of a BT Street Hub 3 unit
-
PA26/2105 Granted
Ham Gate Richmond Park Richmond
Repair existing cast iron fence and gates on a like for like basis following impact damage.
-
PA26/2594 Awaiting decision
First And Second Floors, 206 - 208 Upper Richmond Road West, London, SW14 8AH
Change of use of the first and second floors from office space (Class E) into HMO (Sui Generis), external alterations of rear elevation to replace existing window and extension of existing rear access stairs.
-
PA26/1658 Refused
Flat 2 and Flat 4 , 13 Marlborough Road, Richmond, TW10 6JT
Single storey rear extension and installation of juliet balcony door at first floor level.