
Duffy Associates Limited
Duffy Associates Limited is an architectural practice. See its accreditations, specialisms and planning track record.
Active on Companies House
05638410
Architectural Activities
71129
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About Duffy Associates Limited
Duffy Associates Limited is a London-based firm of chartered structural engineers providing full-service offerings from concept stage through to project completion. The practice specialises in structural design, planning services, and party wall matters for residential and commercial projects across London and the South East.
Specialisations
Structural Engineering · Planning Services · Design Services · Party Wall Matters
Service Areas
London
Reviews
1.0
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Planning Application Track Record
7
Applications
100%
Approval Rate
3
Local Authorities
Local Authorities
Ealing
Southwark
Westminster
Application Types
Advertisements
4
Other
2
Extensions
1
Planning Application History (7)
7 of 7 applications have a map location
23/08351/LBC
The construction of a pergola in the rear garden. (Retrospective, Linked with 23/08350/FULL)
20 Upper Brook Street London W1K 7PX
Undecided
Westminster2023-12-0223/08350/FULL
The construction of a pergola in the rear garden (Retrospective, Linked with 23/08351/LBC)
20 Upper Brook Street London W1K 7PX
Undecided
Westminster2023-12-0226/AP/0360
Details of condition 5 (Details of integral nesting bricks) as required by planning permission ref: 25/AP/1941 granted on 29.10.2025 for: (Extension and external alterations to the existing building involving changes to entrances, doors, windows, fixed panel, materials, fire exits, ramps, balconies and balustrade and signage to carry out the folllowing: -Removal of existing external fire exit stair and its replacement with part single, part two-storey extension with biodiverse roof and 1 AOV, -New main entrance to the Youth Centre with new ramp -New signage to Brandon Youth Centre on NE elevation. -Louvre system, to hide external units on plant room roof, -Vertical risers to be cladded in exterior grade Acupanel in oak effect. -New fire exit to the Youth Centre on NW elevation, -Replace existing main entrance to the Brandon Youth Centre (NE elevation) to provide a new entrance to the Brandon Library with a new ramp. - Existing Library entrance to be replaced with a double-glazed fixed panel. - Enclosure of the existing two balcony on the NW elevation and reintegrate the space into the internal lobby. -Replace the current balustrade with new glazed panels, to coordinate with existing elevation. -Replace existing glazing with new glazing and new filler panels above, -Redecorate existing double-glazed glazing framework black, to coordinate with the new overall design. -Existing Mammoth Logo to be retained on NE elevation)
19 Maddock Way London Southwark SE17 3NH
Permitted
Southwark2026-02-0626/AP/0361
Details of condition 6 '(details of Bee bricks and/or invertebrate hotels) as required by planning permission ref: 25/AP/1941 granted on 29.10.2025 for: (Extension and external alterations to the existing building involving changes to entrances, doors, windows, fixed panel, materials, fire exits, ramps, balconies and balustrade and signage to carry out the folllowing: -Removal of existing external fire exit stair and its replacement with part single, part two-storey extension with biodiverse roof and 1 AOV, -New main entrance to the Youth Centre with new ramp -New signage to Brandon Youth Centre on NE elevation. -Louvre system, to hide external units on plant room roof, -Vertical risers to be cladded in exterior grade Acupanel in oak effect. -New fire exit to the Youth Centre on NW elevation, -Replace existing main entrance to the Brandon Youth Centre (NE elevation) to provide a new entrance to the Brandon Library with a new ramp. - Existing Library entrance to be replaced with a double-glazed fixed panel. - Enclosure of the existing two balcony on the NW elevation and reintegrate the space into the internal lobby. -Replace the current balustrade with new glazed panels, to coordinate with existing elevation. -Replace existing glazing with new glazing and new filler panels above, -Redecorate existing double-glazed glazing framework black, to coordinate with the new overall design. -Existing Mammoth Logo to be retained on NE elevation)
19 Maddock Way London Southwark SE17 3NH
Permitted
Southwark2026-02-06251085HH
Single storey side/rear extension (wraparound); front porch extension; installation of one rooflight to front roofslope; installation of one rooflight to rear roofslope
107 Harp Road Hanwell W7 1JQ
Permitted
Ealing2025-03-2026/AP/0617
Details of Condition 3 'Arboricultural Method Statement'as required by planning permission ref: 25/AP/1941 granted on 29.10.2025 for: (Extension and external alterations to the existing building involving changes to entrances, doors, windows, fixed panel, materials, fire exits, ramps, balconies and balustrade and signage to carry out the folllowing: -Removal of existing external fire exit stair and its replacement with part single, part two-storey extension with biodiverse roof and 1 AOV, -New main entrance to the Youth Centre with new ramp -New signage to Brandon Youth Centre on NE elevation. -Louvre system, to hide external units on plant room roof, -Vertical risers to be cladded in exterior grade Acupanel in oak effect. -New fire exit to the Youth Centre on NW elevation, -Replace existing main entrance to the Brandon Youth Centre (NE elevation) to provide a new entrance to the Brandon Library with a new ramp. - Existing Library entrance to be replaced with a double-glazed fixed panel. - Enclosure of the existing two balcony on the NW elevation and reintegrate the space into the internal lobby. -Replace the current balustrade with new glazed panels, to coordinate with existing elevation. -Replace existing glazing with new glazing and new filler panels above, -Redecorate existing double-glazed glazing framework black, to coordinate with the new overall design. -Existing Mammoth Logo to be retained on NE elevation).
19 Maddock Way London Southwark SE17 3NH
Permitted
Southwark2026-03-0226/AP/0345
Details of Condition 4 (Bat tubes, bricks or boxes) as required by planning permission ref: 25/AP/1941 granted on 29.10.2025 for: 'Extension and external alterations to the existing building involving changes to entrances, doors, windows, fixed panel, materials, fire exits, ramps, balconies and balustrade and signage to carry out the folllowing: -Removal of existing external fire exit stair and its replacement with part single, part two-storey extension with biodiverse roof and 1 AOV, -New main entrance to the Youth Centre with new ramp -New signage to Brandon Youth Centre on NE elevation. -Louvre system, to hide external units on plant room roof, -Vertical risers to be cladded in exterior grade Acupanel in oak effect. -New fire exit to the Youth Centre on NW elevation, -Replace existing main entrance to the Brandon Youth Centre (NE elevation) to provide a new entrance to the Brandon Library with a new ramp. - Existing Library entrance to be replaced with a double-glazed fixed panel. - Enclosure of the existing two balcony on the NW elevation and reintegrate the space into the internal lobby. -Replace the current balustrade with new glazed panels, to coordinate with existing elevation. -Replace existing glazing with new glazing and new filler panels above, -Redecorate existing double-glazed glazing framework black, to coordinate with the new overall design. -Existing Mammoth Logo to be retained on NE elevation'
19 Maddock Way London Southwark SE17 3NH
Permitted
Southwark2026-02-04