Topaz Apartments, Flat 14, High Street, Hounslow, TW3 1AJ
About Topaz Apartments
Topaz Apartments is a detached house in Hounslow (TW3 1AJ). It has a recorded floor area of 50 m² (around 538 sq ft) and council tax band C. The latest certificate (February 2015) returns a B (score 83), comfortably above the UK average. The latest certificate is from February 2015, so improvements made since then won't be reflected. At 50 m² this is the 5th smallest of 61 units on EPC record in Topaz Apartments, where floor areas span 47–86 m². The building's EPC ratings span C to B, with this unit at the top.
Across 2014–2018, sale prices on this property compounded at 16.9% per year. Today's modelled estimate of £140,000 is 27.3% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£204/sq ft) was about 51% below the postcode norm. Most recent transfer: July 2018 at £110,000.
Know exactly what you're buying at Topaz Apartments
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
Topaz Apartments's carbon output is low for the local stock.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 02 Feb 2025
EPC Rating
Planning history
Topaz Apartments has no planning applications on record.
Notable planning nearby
23applications of note in the surrounding area
We flagged 2 things worth checking at Topaz Apartments
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
Topaz Apartments valuation runs notably under the typical sold price in this postcode.
£140,000
Modelled from EPC, postcode comparables and a sale-price growth of 16.9% per year over 4 years.
£110,000
Growth on file: 16.9% per year over 4 years.
Sales timeline
19 July 2018Most recent
£110,000
+99.3%over 4 years14 February 2014
£55,198
Median price across the last 5 sales in TW3 1AJ: £310,000 (2025–2016).
Nearby sales in TW3 1AJ
Topaz Apartments, Flat 40, High Street, Hounslow, TW3 1AJ
Sold Jun 2025
£310,000Topaz Apartments, Flat 49, High Street, Hounslow, TW3 1AJ
Sold Jan 2020
£285,000Topaz Apartments, Flat 50, High Street, Hounslow, TW3 1AJ
Sold Oct 2019
£340,000Topaz Apartments, Flat 48, High Street, Hounslow, TW3 1AJ
Sold Jan 2018
£275,000Topaz Apartments, Flat 60, High Street, Hounslow, TW3 1AJ
Sold Dec 2016
£310,000
Everything we know about Topaz Apartments, 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 High Street homes
On years held, Topaz Apartments runs well behind the street norm.
Price per m²
£2,200
Street avg £3,799
Floor Area
50 m²
Street avg 60 m²
CO₂ Emissions
0.6 t/year
Street avg 0.9 t/year
Years Held
8 years
Street avg 11 years
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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
0.0 km
School Road (TW3) — bus stop.
Closest school
0.1 km
Hounslow Town Primary School. 52 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
52.6dB

Night-time· 23:00 – 07:00
42.2dB