Sunroom and roof terrace alterations at 60A High Street, Portsmouth

“FUL: ALTERATIONS TO FOURTH FLOOR SUNROOM INCLUDING ENLARGED ROOF TERRACE WITH GLAZED BALUSTRADE; INTERNAL ALTERATIONS TO FLOOR LAYOUT AND REPLACEMENT INTERNAL LIFT”

“LBC: EXTERNAL ALTERATIONS TO FOURTH FLOOR SUNROOM INCLUDING ENLARGED ROOF TERRACE WITH GLAZED BALUSTRADE; INTERNAL ALTERATIONS TO FLOOR LAYOUT AND REPLACEMENT INTERNAL LIFT”

“The application site is a four storey, with additional sunroom and modest rooftop terrace above, Grade II listed building located on the corner of High Street and Grand Parade. The application site is within Conservation Area 04 - Old Portsmouth. This conservation area was designated in 1969, with some of Portsmouth's oldest and most important heritage assets within the conservation area.”

“Pre-application advice sought Summer 2025. Officers advised that a reduction in height and glazing area for the sunroom may result in an acceptable solution however materials must be appropriate. The extent of outdoor terrace should be reduced (drawn back form the building edge) and the glass balustrade replaced with plain, black metal railings.”

“23/01393/LBC Refused Listed Building Consent under Delegated Powers November 2024: The proposed development is considered, by reason of its prominent location, additional footprint and height, and glass construction and finish, to represent an incongruous and harmful addition to the listed building. There is no public benefit resulting from the development.”

“Glass balustrade: Officers at Pre-Application stage recommended painted black metal balustrade railings would be a more appropriate solution given the context of the application site. The extended terrace area would extend to the edge of the existing roof, giving it great prominence which would be visible from Oyster Street, High Street, Broad Street, Grand Parade, and the sea wall.”

“Sunroom materials. These are proposed to be a sky-grey composite cladding (specifically RAL 7047). Clarification from the applicant has confirmed this would be a fibre-cement cladding. This is contrary to the Local Planning Authority's pre-application advice that the materials should be appropriate to a Listed Building, and so be vertical timber boards, painted white.”

“Letters to adjoining properties were sent on 16.10.2025. A site notice was erected outside the site on 16.10.2025. 6.2 2 representations have been received in respect of the proposals (all on FUL application, no representations on LBC application). 1 objects to the scheme (a neighbour). 1 is in support (Friends Of Old Portsmouth Association)”

“The following objections were made to the scheme; • Poor quality of the proposal's contemporary appearance in regard to built form, particularly with regard to the Listed Status of the host building and potential president for other works (officer note all works are considered on their own merit) • Lack of subservience and overbearing visual impact, especially in regard to other proposals nearby • Unsightly appearance of sun terrace and associated seating etc.”

“The application site's existing terrace already overlooks the nearest buildings to the south-east, the first being 4 Quay Gate House next door, the second being next-door- but-one at 1 Grand Parade. The proposed extended terrace area would increase overlooking of the rooftop terrace at 4 Quay Gate House, and introduce overlooking of the rooftop terrace at 1 Grand Parade.”

“The new and enlarged window on the south west (front) elevation of the application site would look towards the opposite property some 35m away at 18-22 Grand Parade (Fontenoy House), however this building opposite is three storeys tall and therefore the impact of overlooking, combined with distance and the set back of the sun room, would not result in a harmful effect on neighbour amenity by means of loss of privacy or change in outlook.”

“25/01159/FUL planning permission be refused for the following reasons: The proposed development was considered, by reason of the glass balustrade's prominent location and incongruous material, and the sunroom cladding finish, to represent a harmful addition to the listed building, which would not preserve or enhance the character or appearance of Conservation Area 04 - Old Portsmouth - nor the listed application property. The proposals…”