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Get started9 Marlborough Street is a one-bedroom mid-terrace house in Kensington And Chelsea, London, London (SW3 3PS). It has a recorded floor area of 133 m² (around 1430 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (October 2009) shows an E (score 45), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 57). The latest certificate is from October 2009, so improvements made since then won't be reflected.
Held since June 2002 — that's 24 years off the open market, well above the local norm. Sale prices here have outpaced London HPI: 17.6% per year against 0% for the wider region. Today's modelled estimate of £2,860,000 sits 214.3% above the 2002 sale of £910,000. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.
9 Marlborough Street sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
This certificate is over 10 years old and is no longer valid.Expired 14 Oct 2019
Multiple extension applications run across more than a decade of planning history at 9 Marlborough Street.
Extension: Single storey
Erection of single-storey side infill extension and single-storey rear extension
9 Marlborough Street's modelled value sits at over four times its earliest registered sale price (1999).
£2,860,000
Modelled from EPC, postcode comparables and a sale-price growth of 17.6% per year over 3 years.
£910,000
Growth on file: 17.6% per year over 3 years.
Everything we know about this property, compiled into one in-depth, downloadable report.
On price per m², 9 Marlborough Street runs well behind the street norm.
Price per m²
£6,851
Street avg £17,442
Floor Area
133 m²
Street avg 139 m²
Habitable Rooms
5 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
Fulham Road (SW3) — bus stop.

Daytime· 07:00 – 23:00
57.3dB

Extension: Single storey
Erection of an additional storey at second floor level.
7 June 2002Most recent
£910,000
+5.2%over 1 year30 March 2001
£865,000
+57.3%over 1 year29 April 1999
£550,000
Median price across the last 5 sales in SW3 3PS: £2,755,000 (2022–2005).
8 Marlborough Street Kensington And Chelsea London
Sold Mar 2022
15 Marlborough Street Kensington And Chelsea London
Sold Feb 2021
4 Marlborough Street Kensington And Chelsea London
Sold Aug 2014
6 Marlborough Street Kensington And Chelsea London
Sold Sept 2005
11 Marlborough Street Kensington And Chelsea London
Sold Mar 1996
Detailed AI analysis
An AI-written breakdown of everything that matters
Detailed EPC data
Full energy ratings, history and recommendations
Related properties
Comparable homes and street-level pricing
Full planning history
Every application and decision on record
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Street avg 5 rooms
CO₂ Emissions
8.6 t/year
Street avg 4.0 t/year
SW3 3LZ
Closest school
0.2 km
Oratory Roman Catholic Primary School. 56 schools nearby.
Night-time· 23:00 – 07:00
47.0dB