61 Calton Avenue London Borough of Southwark SE21 7DF
Non material amendment of planning permission ref. no. 23/AP/1984 dated 28/09/2023 for 'Raising of the existing outrigger roof by approx. 1050mm, to provide additional floorspace on the Second Floor. A new sash window matching the existing windows will replace the small existing window of the outrigger and two rooflights are added to the outrigger roof. The existing dormer on the rear elevation is proposed to be widened by approx. 700mm with two new sash windows to match the existing. The new dormer roof will be finished with roof tiles that will match the existing. The proposed works also include a new conservatory infill extension to the Ground Floor and the Crittall -type glazed conservatory extension will have a matching glazed roof to provide further sunlight into the Ground Floor space. The existing rooflight and double doors to the side of the proposed conservatory will be replaced with a Crittalltype rooflight and double doors, respectively, to match the proposed conservatory'. The amendment seeks the following: - The height of the raised roof ridge of the rear outrigger to be reduced to 0.85m above the existing - The new sash window to the rear of the two-storey outrigger to be reduced in proportion - The two new rear rooflights are to be conservation-type rooflights with a dividing vertical glazing bar - The height of the rear dormer is to be reduced to 2.6m from base to the ridge - The zinc cladding of the dormer is to be dark grey.
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Progress
Application details
- Reference
- 23/AP/3354
- Local authority
- Southwark
- Postcode
- SE21 7DF
- Ward
- DUVI
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 7 Dec 2023
- Validated
- 7 Dec 2023
- Target decision
- 3 Jan 2024
- Decided
- 21 Dec 2023
Estimated project value
£37k–£100k
Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.
- 91 CALTON AVENUE, LONDON, SE21 7DFDetached · £3,500,00011 months ago3 Oct 2025
- 65 CALTON AVENUE, LONDON, SE21 7DFSemi-detached · £3,485,00022 months ago11 Oct 2024
- 77 CALTON AVENUE, LONDON, SE21 7DFSemi-detached · £3,100,0002 years ago7 Aug 2024
- 83 CALTON AVENUE, LONDON, SE21 7DFSemi-detached · £3,440,0002 years ago27 Oct 2023
- 87 CALTON AVENUE, LONDON, SE21 7DFSemi-detached · £3,400,0013 years ago25 Apr 2023
- 51 CALTON AVENUE, LONDON, SE21 7DFSemi-detached · £2,600,0005 years ago16 Aug 2021
- 99 CALTON AVENUE, LONDON, SE21 7DFSemi-detached · £3,525,1005 years ago20 Jan 2021
- 55 CALTON AVENUE, LONDON, SE21 7DFSemi-detached · £2,700,0005 years ago28 Oct 2020
Homes here go for about £3,420,001 — the median of the last 8 market sales in SE21 7DF, £2,600,000 to £3,525,100.
Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.
Nearby applications
- 61 Calton Avenue London Borough of Southwark SE21 7DFPermittedNext door
- 57 Calton Avenue London Borough of Southwark SE21 7DFPermittedNext door
- 65 Calton Avenue London Borough of Southwark SE21 7DFPendingNext door
- 57 Calton Avenue London Borough of Southwark SE21 7DFPermittedNext door
- 55 Calton Avenue London Borough of Southwark SE21 7DFPendingAdjoining
- 55 Calton Avenue London Borough of Southwark SE21 7DFPermittedAdjoining