
Design Extension Ltd
Design Extension Ltd is an architectural practice in Purley. See its accreditations, specialisms and planning track record.
Active on Companies House
16557274
Architectural Activities
★ 5.0 Google (12)
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Purley, CR8, England
Reviews
5.0
See reviews 12 reviews on Google
Planning Application Track Record
23
Applications
82%
Approval Rate
11
Local Authorities
1
Appeals (0% successful)
Local Authorities
Birmingham
Buckinghamshire
Croydon
Ealing
Epsom and Ewell
Gravesham
Greenwich
Lambeth
Lewisham
Southampton
St Albans
Application Types
Extensions
95
Other
31
New Dwellings
22
Demolition
12
Change of Use
6
Conditions
5
Prior Approval
3
Advertisements
2
Tree Works
1
Planning Application History (23)
22 of 23 applications have a map location
2025/02190/PA
Application for the removal of a damaged truss, raising of the ridge and installation of a steel ridge beam.
582 Moseley Road Sparkbrook Birmingham B12 9AA
Permitted
Birmingham2025-04-142025/02240/PA
Listed Building Conent for the removal of a damaged truss, raising of the ridge and installation of a steel ridge beam.
582 Moseley Road Sparkbrook Birmingham B12 9AA
Permitted
Birmingham2025-04-1520260921
Installation of a kitchen extractor flue with filters.
2 Milton Road Gravesend Kent
Undecided
Gravesham2026-09-1520/00622/HSE
Demolition of the existing conservatory and the erection of a single storey rear extension.
5 Elm Close South Croydon CR2 7AH
Permitted
Croydon2020-02-10DC/21/122159
Details submitted in respect of Condition (3) Construction Logistics Management Plan and (8) Tree Protection Plan of planning permission DC/20/119098 dated 25/05/2021 for an application submitted under section 73 of the Town and Country Planning Act 1990 in order to allow for variation of Condition 2 in connection with DC/19/112710 dated 04/09/2020 for the construction of a two storey, two bedroom dwelling house on land to the rear of 38 Ravensbourne Road SE6, together with associated landscaping refuse and cycle parking, in order to allow the following changes: the re-siting of the dwellinghouse to increase the set-back of the front elevation, the increase in the depth of the dwellinghouse and the removal of solar panels on the rear roof slope
38 RAVENSBOURNE ROAD, LONDON, SE6 4UX
Permitted
Lewisham2021-06-09DC/23/133733
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) and Classes B and C of Schedule 2, Part 1?of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of a rear dormer roof extension together with the installation of three rooflights in the front roof slope of 54 Manwood Road, SE4
54 MANWOOD ROAD, LONDON, SE4 1SB
Permitted
Lewisham2023-11-04PL/25/6038/FA
Rear extension
22 Terryfield Road High Wycombe Buckinghamshire HP13 7RX
Permitted
Buckinghamshire2025-12-01261158FUL
Conversion of a single dwellinghouse into two self-contained dwellings; first floor rear extension; and provision of associated amenity space, refuse and cycle storage
138 Dormers Wells Lane Southall UB1 3JB
Rejected
Ealing2026-03-1725/3901/HD
Construction of a single storey rear extension with associated works.
615 WESTHORNE AVENUE, ELTHAM, LONDON, SE9 6JX
Rejected
Greenwich2025-11-19260385CPL
Single storey detached garden outbuilding used ancillary to main house (following demolition of existing shed) (Lawful Development Certificate for a Proposed Development)
138 Dormers Wells Lane Southall UB1 3JB
Permitted
Ealing2026-02-0226/0008/HD
Construction of a single-storey rear extension, conversion of existing garage, replacement of all windows, replacement of front porch roof, installation of new front door and surrounding glazing, relocation of side ground-floor window, addition of render to front elevation and associated external works [Amended description, re-consultation].
3 CROSIER CLOSE, KIDBROOKE, LONDON, SE3 8NT
Withdrawn
Greenwich2026-01-01262047FUL
Conversion of a single dwellinghouse into two self-contained dwellings; first floor rear extension; and provision of associated amenity space, refuse and cycle storage
138 Dormers Wells Lane Southall UB1 3JB
Permitted
Ealing2026-05-18254762CPL
Single storey porch extension; alteration of roof from hip to gable end; rear roof extension (Lawful Development Certificate for a Proposed Development)
138 Dormers Wells Lane Southall UB1 3JB
Permitted
Ealing2025-12-1920/04220/GPDO
Erection of a single storey rear extension projecting out 4 metres from the rear wall of the original house with a height to the eaves of 2.7 metres and a maximum height of 3.54 metres
3 Elm Close South Croydon CR2 7AH
Permitted
Croydon2020-09-16DC/21/119971
Details submitted in respect of Condition (3) Construction Logistics Management Plan of planning permission DC/19/112710 dated 4 September 2020 for the construction of a two storey, two bedroom dwelling house on land to the rear of 38 Ravensbourne Road SE6, together with associated landscaping refuse and cycle parking.
LAND TO THE REAR OF 38 RAVENSBOURNE ROAD, LONDON, SE6 4UX
Withdrawn
Lewisham2021-01-15DC/20/119098
An application submitted under section 73 of the Town and Country Planning Act 1990 in order to allow for variation of Condition 2 in connection with DC/19/112710 dated 04/09/2020 for the construction of a two storey, two bedroom dwelling house on land to the rear of 38 Ravensbourne Road SE6, together with associated landscaping refuse and cycle parking, in order to allow the following changes: The re-siting of the dwellinghouse to increase the set-back of the front elevation The increase in the depth of the dwellinghouse The removal of solar panels on the rear roof slope
LAND TO THE REAR OF, 38 RAVENSBOURNE ROAD, LONDON, SE6 4UX
Permitted
Lewisham2020-11-0925/03450/HSE
Erection of single-storey front extension, single/double-storey side/front extension.
107 Crowley Crescent Croydon CR0 4EF
Rejected
Croydon2025-10-23PL/25/6038/FA
Rear extension
22 Terryfield Road High Wycombe Buckinghamshire HP13 7RX
Permitted
Buckinghamshire2025-12-0126/00988/DIS
Application for approval of details reserved by condition 3 (Landscaping detailed plan) and 5 (Refuse & Recycling and Cycle storage facilities) of permission 26/00247/FUL for change of use to Class C2 (Care home Supported living services)
159 West End Road Southampton SO18 6PJ
Permitted
Southampton2026-08-245/2026/0860
Retrospective planning for AC condenser at 9 Woodfield Way St Albans Hertfordshire AL4 9RY
9 Woodfield Way St Albans Hertfordshire AL4 9RY
Undecided
St Albans2026-06-05Page 1 of 2