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Get started21 Halsey Street, Kensington And Chelsea, London, SW3 2QH
Listed building
About 21 Halsey Street
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21 Halsey Street is a four-bedroom mid-terrace house in Kensington And Chelsea, London, London (SW3 2QH). It has a recorded floor area of 224 m² (around 2411 sq ft), construction records dating it to 1900-1929 and council tax band H. It is a listed building, which means external alterations are tightly controlled but it may qualify for heritage tax reliefs. The latest certificate (September 2025) shows a C (score 69), just inside the C band. When first surveyed in November 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Poor to Average and lighting went from Average to Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.
Untraded for 20 years, with the last transfer in September 2006. Sale prices here have outpaced London HPI: 48.9% per year against 0% for the wider region. Today's modelled estimate of £5,262,000 sits 64.4% above the 2006 sale of £3,200,000. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved. Its energy rating outperforms most of the postcode (better than 85% of similar EPCs). 4 bedrooms is on the larger side for this postcode, where 3 is the typical count.
What this property has
Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.
Inside
- Bedrooms4
- Bathrooms3
- Dining roomYes
Building
- Listed building
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 2)
Sept 2025
EPC Rating
A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
5.8 t/year
Occupancy
Owner Occupied
Planning history
Applications and permits filed against 21 Halsey Street, Kensington And Chelsea, London, SW3 2QH, sourced from the PlanIt planning register.
21 Halsey Street has 2 separate extension applications on the council record.
- Apr 2012ExtensionHeritageGrant Planning Permission/Consent
Extension: Rear of property
Extension to existing rear closet wing from ground to second floor and internal alterations.
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
21 Halsey Street has more than doubled in price since the earliest registered sale in 2004.
Current estimate
See how we calculated this£5,262,000
Modelled from EPC, postcode comparables and a sale-price growth of 48.9% per year over 2 years.
Last sold (2006)
£3,200,000
Growth on file: 48.9% per year over 2 years.
Sales timeline
Full property reportLaunch offer · 33% off
The complete analysis of 21 Halsey Street, Kensington And Chelsea, London, SW3 2QH
Everything we know about this property, compiled into one in-depth, downloadable report.
Versus other Halsey Street homes
Four headline reads against 13 similar houses on this street, drawn from the latest EPC and Land Registry data.
21 Halsey Street outperforms the street on co₂ emissions by a wide margin.
Price per m²
£14,286
Street avg £17,311
Floor Area
224 m²
Street avg 210 m²
Habitable Rooms
9 rooms
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the London district page.
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.
Road noise across the postcode
Modelled day and night-time noise levels around SW3 2QH from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
57.8dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 85 points of interest in total.
Common questions
The questions buyers, sellers and homeowners most often ask about 21 Halsey Street, Kensington And Chelsea, London, SW3 2QH. Each answer is also embedded as structured data for search engines.