Basement Flat, 10 Upper Tachbrook Street, London, SW1V 1SH
About Basement Flat
Basement Flat is a mid-terrace house in London (SW1V 1SH). It has a recorded floor area of 65 m² (around 700 sq ft) and construction records dating it to before 1900. The latest certificate (July 2020) shows a C (score 80), near the top of the C band. The rating has held steady at C across 2 certificates since December 2008. Between certificates, window efficiency went from Poor to Good and lighting went from Good to Very Good; while wall efficiency dropped from Good to Very Poor.
One planning record on file: change of use to residential approved in 2016. Past consents include change of use to residential, meaningful when judging how the property has evolved. At 65 m² it's 18.2% larger than the typical home in the postcode (55 m² median across 13 EPCs).
Know exactly what you're buying at Basement Flat
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
Basement Flat's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
- Sept 2016Change of UseAmendmentIn report
Use of basement as a residential flat (Class C3)
- Documents
- 12 docs on file
- Reference
- 16/04738/CLEUD
We flagged 1 thing worth checking at Basement Flat
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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Basement Flat has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£555,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in SW1V 1SH: £470,000 (2024–2018).
Nearby sales in SW1V 1SH
Flat 3, 2 Upper Tachbrook Street, London, SW1V 1SH
Sold Apr 2024
£425,0006 Upper Tachbrook Street, Westminster, London, SW1V 1SH
Sold Jun 2023
£435,000Flat 2, 6 Upper Tachbrook Street, London, SW1V 1SH
Sold Jul 2022
£470,000Flat 2, 22 Upper Tachbrook Street, London, SW1V 1SH
Sold Apr 2022
£800,0008 Upper Tachbrook Street, Westminster, London, SW1V 1SH
Sold Dec 2018
£1,400,000
Everything we know about Basement Flat, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Upper Tachbrook Street homes
On epc rating, Basement Flat stands well clear of the street.
EPC Rating
80 (C)
Street avg 63 (D)
Floor Area
65 m²
Street avg 68 m²
CO₂ Emissions
1.4 t/year
Street avg 4.1 t/year
Habitable Rooms
2 rooms
Street avg 4 rooms
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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
Warwick Way — bus stop.
Closest school
0.3 km
St Vincent De Paul Catholic Primary School. 68 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
60.7dB

Night-time· 23:00 – 07:00
51.0dB