15a, Avonwick Road, Hounslow, TW3 4DX
About 15a
15a is a mid-terrace house in Hounslow (TW3 4DX). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1930-1949 and council tax band C. At 56 m² this is the 9th smallest of 23 units on EPC record in the building, where floor areas span 40–172 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (March 2020) shows a C (score 76), near the top of the C band. When first surveyed in March 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good, window efficiency went from Average to Good and lighting went from Average to Very Good.
Held since July 2005 — that's 21 years off the open market, well above the local norm. Today's modelled estimate of £400,000 sits 60% above the 2005 sale of £249,950. On a £-per-square-foot basis, the last sale (£415/sq ft) was about 56.7% above the typical sold price in the postcode. At 56 m² it sits well below the postcode median (101 m² across 22 EPCs), making it one of the more compact homes locally. One planning record on file: an extension approved in 2019. Past consents include an extension, meaningful when judging how the property has evolved.
Know exactly what you're buying at 15a
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
15a's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Wall insulation improved
More low energy lighting installed
Planning history
Council records include a part-single-part-two-storey rear extension at 15a.
- Dec 2019ExtensionFullIn report
Extension: Part single, part two storey · Rear of property
Erection of a part single part two storey rear extension to both flats
- Documents
- 7 docs on file
- Reference
- P/2019/3617
We flagged 1 thing worth checking at 15a
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
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Sales history & valuation
15a valuation sits well clear of the typical sold price in this postcode.
£400,000
Modelled from EPC, postcode comparables.
£249,950
Recorded with HM Land Registry.
Sales timeline
7 July 2005Most recent
£249,950
Median price across the last 5 sales in TW3 4DX: £520,000 (2022–2019).
Nearby sales in TW3 4DX
Everything we know about 15a, 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
Versus other Avonwick Road homes
On epc rating, 15a stands well clear of the street.
Price per m²
£4,463
Street avg £3,663
Floor Area
56 m²
Street avg 53 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
1.5 t/year
Street avg 2.8 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
16/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Civic Street — bus stop.
Closest school
0.2 km
Alexandra Primary School. 49 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
53.0dB
Night-time· 23:00 – 07:00
44.1dB