Flat 4, 27 Powis Square, London, W11 2AZ
About Flat 4
Flat 4 is a mid-terrace house in London (W11 2AZ). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to before 1900 and council tax band D. At 58 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 56–91 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 66). The latest certificate (November 2025) shows a C (score 73). Earlier certificates rated it B (March 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor; while lighting dropped from Very Good to Good. The recommended improvements would push it to B (score 81). This certificate was lodged in the last six months, so the rating reflects current condition.
One planning record on file: an extension approved in 2015. Past consents include an extension, meaningful when judging how the property has evolved. On a £-per-square-foot basis, the last sale (£1,442/sq ft) was about 19.2% above the typical sold price in the postcode. Most recent transfer: July 2019 at £900,000.
Know exactly what you're buying at Flat 4
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Single glazing replaced with double or better glazing
Wall insulation improved
Planning history
Flat 4 has an approved single-storey rear extension on the planning record.
- Jul 2015ExtensionFullIn report
Extension: Single storey · Rear of property
Creation of second floor extension to rear closet wing.
- Council
- Colville
- Reference
- PP/15/02484
We flagged 1 thing worth checking at Flat 4
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
£881,000
Modelled from EPC, postcode comparables.
£900,000
Recorded with HM Land Registry.
Sales timeline
30 July 2019Most recent
£900,000
28 March 2016
£900,000
Median price across the last 5 sales in W11 2AZ: £1,000,000 (2021–2016).
Everything we know about Flat 4, 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 Powis Square homes
On co₂ emissions, Flat 4 stands well clear of the street.
Price per m²
£15,517
Street avg £14,942
Floor Area
58 m²
Street avg 74 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
1.6 t/year
Street avg 2.6 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
18/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Powis Gardens — bus stop.
Closest school
0.2 km
Colville Primary School. 85 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
59.5dB
Night-time· 23:00 – 07:00
50.2dB