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Get started3 Halsey Street is a four-bedroom mid-terrace house in Kensington And Chelsea, London, London (SW3 2QH). It has a recorded floor area of 191 m² (around 2056 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (August 2011) shows an E (score 50), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since October 2009. Between certificates, roof efficiency went from Very Poor to Poor. The recommended improvements would push it to D (score 56). The latest certificate is from August 2011, so improvements made since then won't be reflected. Other recorded features include a balcony. Period features are noted in the property record.
Sale prices here have outpaced London HPI: 9.4% per year against 0% for the wider region. Today's modelled estimate of £3,707,000 is 12.8% below the 2015 sale of £4,250,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£2,067/sq ft) was about 53% above the typical sold price in the postcode. 8 planning records sit against the property, 3 approved, 5 refused. Past consents include an extension and a basement excavation, meaningful when judging how the property has evolved. On the market in November 2015 and unlisted since — roughly 11 years.
3 Halsey Street's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 30 Aug 2021
3 Halsey Street has 4 separate extension applications on the council record.
Replacement of existing carpet and laminate floor coverings to ground floor with 18mm engineered Oak Board. (Internal works only)
3 Halsey Street has more than quadrupled in price since its earliest registered sale in 1999.
£3,707,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.4% per year over 17 years.
£4,250,000
Growth on file: 9.4% per year over 17 years.
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On co₂ emissions, 3 Halsey Street runs well behind the street norm.
Price per m²
£22,250
Street avg £16,698
Floor Area
191 m²
Street avg 213 m²
Habitable Rooms
6 rooms
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Draycott Place — bus stop.

Daytime· 07:00 – 23:00
57.8dB

Changes detected from historical EPC data
Heating controls changed
Roof insulation improved
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Excavation of new basement storey with lightwells to front and rear.
6 more applications for this property
Join to see all planning history.
11 November 2015Most recent
£4,250,000
+41.7%over 5 years1 November 2010
£3,000,000
+218.1%over 11 years26 February 1999
£943,005
Median price across the last 5 sales in SW3 2QH: £3,950,000 (2025–2022).
18 Halsey Street Kensington And Chelsea London
Sold Oct 2025
1 Halsey Street Kensington And Chelsea London
Sold Sept 2024
7 Halsey Street Kensington And Chelsea London
Sold Jun 2023
6 Halsey Street Kensington And Chelsea London
Sold Jul 2022
15 Halsey Street Kensington And Chelsea London
Sold Apr 2022
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Street avg 8 rooms
CO₂ Emissions
11.0 t/year
Street avg 7.8 t/year
SW3 2QH
Closest school
0.1 km
St Joseph's Catholic Primary School. 55 schools nearby.
Night-time· 23:00 – 07:00
47.8dB