Topaz Apartments, Flat 49, High Street, Hounslow, TW3 1AJ
About Topaz Apartments
Topaz Apartments is a one-bedroom detached house in Hounslow (TW3 1AJ). It has a recorded floor area of 63 m² (around 678 sq ft) and council tax band C. The latest certificate (February 2015) returns a B (score 84), comfortably above the UK average. The latest certificate is from February 2015, so improvements made since then won't be reflected. At 63 m² this is the 42nd 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. Other recorded features include a balcony. Period features are noted in the property record.
At 63 m² it's 16.7% larger than the typical home in the postcode (54 m² median across 60 EPCs). Across 2015–2020, sale prices on this property compounded at 1.6% per year. Most recent transfer: January 2020 at £285,000.
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
What this property has
Inside
- Bedrooms1
- Bathrooms1
- Open-plan layoutYes
Outside
- Private gardenYes
- BalconyYes
Building
- Central heatingYes
- Period featuresYes
- RefurbishedYes
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This certificate is over 10 years old and is no longer valid.Expired 03 Feb 2025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
30-day money-back guarantee
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£290,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.6% per year over 5 years.
£285,000
Growth on file: 1.6% per year over 5 years.
Sales timeline
24 January 2020Most recent
£285,000
+7.5%over 4 years15 June 2015
£265,000
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 50, High Street, Hounslow, TW3 1AJ
Sold Oct 2019
£340,000Topaz Apartments, Flat 14, High Street, Hounslow, TW3 1AJ
Sold Jul 2018
£110,000Topaz 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
£4,524
Street avg £3,741
Floor Area
63 m²
Street avg 60 m²
CO₂ Emissions
0.7 t/year
Street avg 0.9 t/year
Years Held
6 years
Street avg 11 years
Similar properties nearby
101 105, Flat 6, High Street
TW3 1QT
101 105, Flat 1, High Street
TW3 1QT
101 105, Flat 3, High Street
TW3 1QT
138a, Flat 6, High Street
TW3 1LR
138a, Flat 7, High Street
TW3 1LR
138a, Flat 4, High Street
TW3 1LR
134a, Flat 1, High Street
TW3 1LR
101 105, Flat 10, High Street
TW3 1QT
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