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Get startedFlat 4 is a detached house in London (SW3 1JD). It has a recorded floor area of 123 m² (around 1324 sq ft), construction records dating it to 2012 onwards and council tax band H. At 123 m² this is the largest unit on EPC record across the building (91–123 m²). The building's EPC ratings span C to B, with this unit at the bottom. The latest certificate (June 2025) shows a C (score 73). The rating has held steady at C across 3 certificates since July 2015. Between certificates, wall efficiency went from Good to Very Good; while main heating dropped from Good to Poor. Main heating runs on electricity.
At 123 m² the property is well over the postcode median (43 m² across 9 EPCs), placing it in the larger end of the local stock. 10 planning records sit against the property, 4 approved, 3 refused. Past consents include an extension and solar panel installation, meaningful when judging how the property has evolved.
Council records show a subdivision application — the property's legal arrangement has been altered.
Flat 4 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£2,100,000
Modelled from EPC, postcode comparables.
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
Floor Area for Flat 4 runs comfortably ahead of the street norm.
EPC Rating
73 (C)
Street avg 73 (C)
Floor Area
123 m²
Street avg 57 m²
CO₂ Emissions
2.7 t/year
Street avg 1.5 t/year
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Harrods — bus stop.

Daytime· 07:00 – 23:00
58.2dB

Changes detected from historical EPC data
Heat pump installed, significantly improving energy efficiency
Heating controls upgraded for better temperature management
Hot water efficiency improved
High performance glazing installed
Wall insulation improved
Hot water efficiency decreased
Loft insulation upgraded to recommended levels
Are we missing something? Tell us about home improvements to help adjust your valuation.
Amendments to planning permission dated 2 December 2013 (RN: 13/09862) for construction of sheer storey extension with mansard to provide additional fourth floor level and use of part ground and upper floors of 124-126 Brompton Road and fourth floor of 122 Brompton Road as four residential units. Construction of cycle storage area at rear lower ground floor, installation of plant on first floor flat roof and installation of PV panels and a satellite dish at roof level. Alterations to front elevation. (Site includes 122-126 Brompton Road). Namely, relocation of plant equipment from first floor roof to basement courtyard; relocation of cycle spaces within basement courtyard and reconfiguration of photovoltaic panels at roof level.
Construction of sheer storey extension with mansard to provide additional fourth floor level and use of part ground and upper floors of 124-126 Brompton Road and fourth floor of 122 Brompton Road as four residential units. Construction of cycle storage area at rear lower ground floor, installation of plant on first floor flat roof and installation of PV panels and a satellite dish at roof level. Alterations to front elevation. (Site includes 122-126 Brompton Road). Application forms part of a land use swap with Montpelier House, 106-110 Brompton Road and Moreau House, 112-120 Brompton Road.
8 more applications for this property
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Habitable Rooms
4 rooms
Street avg 2 rooms
SW3 1RT
Closest school
0.7 km
Marlborough Primary School. 55 schools nearby.
Night-time· 23:00 – 07:00
49.2dB