Flat 2, 23 Onslow Square, London, SW7 3NJ
About Flat 2
Flat 2 is a mid-terrace house in London (SW7 3NJ). It has a recorded floor area of 117 m² (around 1259 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (December 2016) shows a C (score 72). The recommended improvements would push it to B (score 84).
Today's modelled estimate of £1,894,000 is 33% below the 2024 sale of £2,825,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£2,243/sq ft) was about 206.5% above the typical sold price in the postcode. Sold November 2024 for £2,825,000. One historical planning record sits against the property in 2017.
Know exactly what you're buying at Flat 2
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Planning history
- Sept 2017RenovationHeritageIn report
Internal alterations including removal of sections of partitioning; construction of stud partitioning; overhauling of doors; renew kitchen; upgrade electrical installation including lighting to kitchen and bathroom areas to second floor flat.
- Council
- Thurloe and Smith's Charity
- Reference
- LB/17/04566
We flagged 2 things worth checking at Flat 2
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
- Larger development activity nearby
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Sales history & valuation
Flat 2 valuation sits well clear of the typical sold price in this postcode.
£1,894,000
Modelled from EPC, postcode comparables and a sale-price growth of 0.5% per year over 8 years.
£2,825,000
Growth on file: 0.5% per year over 8 years.
Sales timeline
1 November 2024Most recent
£2,825,000
+3.9%over 7 years29 March 2017
£2,720,000
Median price across the last 5 sales in SW7 3NJ: £2,300,000 (2024–2021).
Nearby sales in SW7 3NJ
Flat 12, 25 Onslow Square, Kensington And Chelsea, London, SW7 3NJ
Sold Oct 2024
£560,000Flat 11, 25 Onslow Square, Kensington And Chelsea, London, SW7 3NJ
Sold Jul 2023
£1,600,000Flat 3, 23 Onslow Square, London, SW7 3NJ
Sold May 2023
£2,800,000Flat 1, 17 Onslow Square, London, SW7 3NJ
Sold Aug 2022
£3,600,000Flat 1, 11 Onslow Square, London, SW7 3NJ
Sold Mar 2021
£2,300,000
Everything we know about Flat 2, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby
Versus other Onslow Square homes
On years held, Flat 2 runs well behind the street norm.
Price per m²
£24,145
Street avg £16,758
Floor Area
117 m²
Street avg 104 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
3.2 t/year
Street avg 4.2 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
10/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Onslow Square — bus stop.
Closest school
0.3 km
Oratory Roman Catholic Primary School. 58 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
58.4dB
Night-time· 23:00 – 07:00
48.1dB