100a, Alderney Street, Westminster, London, SW1V 4EZ
About 100a
100a is a detached house in Westminster, London, London (SW1V 4EZ). It has a recorded floor area of 32 m² (around 344 sq ft), construction records dating it to 1900-1929 and council tax band E. At 32 m² this is the 2nd smallest of 13 units on EPC record in the building, where floor areas span 31–90 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (January 2017) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 80). Main heating runs on electricity.
At 32 m² it sits well below the postcode median (48 m² across 23 EPCs), making it one of the more compact homes locally. On a £-per-square-foot basis, the last sale (£1,190/sq ft) was about 54.5% above the typical sold price in the postcode. Sold March 2020 for £410,000.
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Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Planning history
100a has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£433,000
Modelled from EPC, postcode comparables.
£410,000
Recorded with HM Land Registry.
Sales timeline
12 March 2020Most recent
£410,000
Median price across the last 5 sales in SW1V 4EZ: £570,000 (2023–2021).
Nearby sales in SW1V 4EZ
Flat 1, 92 Alderney Street, Westminster, London, SW1V 4EZ
Sold Dec 2023
£885,000Flat 5, 98 Alderney Street, Westminster, London, SW1V 4EZ
Sold May 2022
£605,000100 Alderney Street, Westminster, London, SW1V 4EZ
Sold Sept 2021
£465,000112a, Alderney Street, Westminster, London, SW1V 4EZ
Sold May 2021
£570,000Flat 5, 92 Alderney Street, London, SW1V 4EZ
Sold May 2021
£398,000
Everything we know about 100a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?
Versus other Alderney Street homes
On floor area, 100a runs well behind the street norm.
Price per m²
£12,813
Street avg £11,396
Floor Area
32 m²
Street avg 55 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
2.7 t/year
Street avg 2.5 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
12/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Winchester Street — bus stop.
Closest school
0.3 km
St Gabriel's CofE Primary School. 69 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
59.4dB
Night-time· 23:00 – 07:00
49.3dB