Owain Williams Architecture Ltd
Owain Williams Architecture Ltd is an architectural practice in London. See its accreditations, specialisms and planning track record.
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10131494
Architectural Activities
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About Owain Williams Architecture Ltd
Owain Williams Architecture is a practice based in London specialising in residential extensions, listed building conservation, and adaptive reuse projects. The practice works across London and the South East, with particular expertise in Victorian terraced houses and Grade II listed buildings.
Specialisations
Residential Extensions · Conservation · Sustainable Design
Service Areas
London · Kent · South Wales
Reviews
5.0
See reviews 2 reviews on Google
Credentials
- ARB registered
- RIBA chartered
Memberships can lapse, so check before work starts.
Planning Application Track Record
19
Applications
75%
Approval Rate
6
Local Authorities
Local Authorities
Barnet
Brent
Bromley
Lambeth
Lewisham
Rhondda
Application Types
Extensions
14
Other
5
Demolition
2
New Dwellings
1
Conditions
1
Planning Application History (19)
19 of 19 applications have a map location
26/00067/DET
Approval of details pursuant to condition 8 (Foundation Method Statement) of planning permission ref. 25/00264/FUL (Extension of garage and additional storey together with the removal of a ground floor side door.), granted on 02.05.2025.
161 Hartington Road London SW8 2EY
Permitted
Lambeth2026-01-0818/0500/10
Proposed two storey dwelling on site of vacant structure with hardstanding for vehicular use
GARTH HALL FARM, ROAD TO GARTH HALL FARM, COEDELY, TONYREFAIL, PORTH, CF39 8HJ
Rhondda2018-05-10
18/05523/PLUD
Replacement external walls of existing single storey rear structure, including alterations to windows, french doors and roof to incorporate rooflights/tiles. LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)
43 Hillview Road Orpington BR6 0SE
Permitted
Bromley2018-12-1325/03664/FUL
Erection of a single storey rear and side return extension and four rooflights, the removal of one existing side window and a rear double-leaf door and the installation of metal framed glazed doors to the rear.
19 Solon Road London SW2 5UU
Permitted
Lambeth2025-11-2525/4578/HSE
Alterations to windows and doors including: Replacement windows to front, rear and side elevations, replacement doors, lower sill to existing closet wing window
36 Hogarth Hill London NW11 6BA
Undecided
Barnet2025-11-1719/3453
Alterations to single storey side-to-rear extension to comprise re-surfacing with brick slips, alteration and replacement of patio doors and replacement of side window, also, bricking up of first floor side window, enlargement of rear dormer roof extension, and installation of two side, and one front rooflights to dwellinghouse
54 Chevening Road, London, NW6 6DE
Permitted
Brent2019-09-2626/02050/FUL
Alterations to rear outrigger roof to form external terrace with obscured balustrade.
19 Solon Road London Lambeth SW2 5UU
Rejected
Lambeth2026-07-1418/02353/FULL6
Demolition of existing garage and construction of single storey side extension to property
44 Oaklands Lane Biggin Hill TN16 3DP
Permitted
Bromley2018-05-2325/4579/LBC
Alterations to windows and doors including: Replacement windows to front, rear and side elevations, replacement doors, lower sill to existing closet wing window
36 Hogarth Hill London NW11 6BA
Undecided
Barnet2025-11-1717/04537/FULL6
Single storey rear and side extensionPART RETROSPECTIVE APPLICATION
64 Jail Lane Biggin Hill TN16 3SB
Permitted
Bromley2017-10-0225/01892/VOC
Variation of Condition 2 (approved plans) of planning permission ref: 25/00264/FUL (Extension of garage and additional storey together with the removal of a ground floor side door) granted 02.05.2025. Variation sought: Repositioning of the internal stair as an external stair to the west elevation with a solid timber door to provide access to the first floor.
161 Hartington Road London SW8 2EY
Withdrawn
Lambeth2025-06-1025/03037/FUL
Replacement of single glazed timber sash windows with a like for like double glazed timber sash window to the second floor.
1 Cleaver Square London SE11 4DW
Rejected
Lambeth2025-09-2618/02348/FULL6
Demolition of existing garage and construction of part one/two storey side extension
44 Oaklands Lane Biggin Hill TN16 3DP
Rejected
Bromley2018-05-23DC/21/120584
Lawful Development Certificate (Proposed) in respect of the construction of a single storey rear extension at 120 CRANSTON ROAD, SE23.
120 CRANSTON ROAD, LONDON, SE23 2EY
Permitted
Lewisham2021-02-24DC/21/120583
Construction of a single storey rear extension at 120 CRANSTON ROAD, SE23
120 CRANSTON ROAD, LONDON, SE23 2EY
Withdrawn
Lewisham2021-02-2425/0272/192
Roof extension involving hip to gable, rear dormer window , 3no. front facing rooflights and new side gable window.
Kilve Church Crescent London N3 1BE
Rejected
Barnet2025-01-2725/1892/192
Roof extension involving hip to gable, rear dormer window, 3no. front, 1no. rear facing rooflight and new side gable window
Kilve Church Crescent London N3 1BE
Permitted
Barnet2025-05-0625/1239/HSE
Single storey side/rear extension. Changes to fenestration
Kilve Church Crescent London N3 1BE
Permitted
Barnet2025-03-2425/03734/FUL
Alterations to existing single-storey rear extension including replacement of pitched roof with a flat roof, installation of new door and window and installation of a canopy to the side return; and, works to the main building including replacement of existing ground floor side elevation door and windows with a new window and replacement of existing ground floor rear elevation window with double doors.
73 Canterbury Grove London SE27 0NZ
Permitted
Lambeth2025-12-02