Flat 3 is an end-of-terrace house in London (SW3 5TX). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 1900-1929 and council tax band E. At 47 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 41–61 m². The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (73 versus a worst of 62). The latest certificate (May 2025) shows a C (score 73). When first surveyed in April 2011 the rating was E, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good.
Sale prices here have outpaced London HPI: 9.4% per year against 0% for the wider region. Today's modelled estimate of £609,000 is 26.9% above the 2011 sale price. On a £-per-square-foot basis, the last sale (£949/sq ft) was about 73.9% above the typical sold price in the postcode. On the market in June 2011 and unlisted since — roughly 15 years. At 47 m² it's 16.8% smaller than the typical home in the postcode (57 m² median across 12 EPCs).
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
Flat 3's carbon output is low for the local stock.
Flat 3 has no planning applications on record.
Notable planning nearby
7applications of note in the surrounding area
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.
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Flat 3 has more than tripled in price since its earliest registered sale in 1999.
£609,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.4% per year over 12 years.
£480,000
Growth on file: 9.4% per year over 12 years.
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
On co₂ emissions, Flat 3 stands well clear of the street.
Price per m²
£10,213
Street avg £8,826
Floor Area
47 m²
Street avg 74 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Chelsea Old Town Hall — bus stop.

Daytime· 07:00 – 23:00
57.3dB

Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
More low energy lighting installed
23 June 2011Most recent
£480,000
+52.4%over 6 years26 April 2005
£315,000
+96.9%over 6 years22 April 1999
£160,000
Median price across the last 5 sales in SW3 5TX: £641,250 (2017–2008).

CO₂ Emissions
1.5 t/year
Street avg 2.7 t/year
SW3 5NR
Closest school
0.3 km
Christ Church CofE Primary School. 59 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Night-time· 23:00 – 07:00
47.8dB