17 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
About 17 Blackwell House
17 Blackwell House is a property in Nash Mills Wharf, Hemel Hempstead, Hemel Hempstead (HP3 9FX). It has a recorded floor area of 73 m² (around 786 sq ft) and council tax band D. The latest certificate (October 2015) returns a B (score 82), comfortably above the UK average. Main heating runs on electricity: electricity, unspecified tariff. The latest certificate is from October 2015, so improvements made since then won't be reflected. At 73 m² this is the 28th smallest of 36 units on EPC record in the building, where floor areas span 46–83 m². The building's EPC ratings span D to B, with this unit at the top.
On energy efficiency it sits in the top 10% of properties in this postcode. Last sale on file: £319,000 in November 2022. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
17 Blackwell House ranks among the most efficient homes in the postcode for energy use.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 29 Oct 2025
EPC Rating
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Planning history
17 Blackwell House has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
17 Blackwell House saw 4 transfers in just over a decade — high turnover for the postcode.
£322,000
Modelled from EPC, postcode comparables and a sale-price growth of -0.4% per year over 7 years.
£319,000
Growth on file: -0.4% per year over 7 years.
Sales timeline
21 November 2022Most recent
£319,000
+8.1%over 4 years31 October 2018
£295,000
-6.3%28 June 2018
£315,000
-4.0%over 2 years6 November 2015
£328,000
Median price across the last 5 sales in HP3 9FX: £280,000 (2025–2024).
Nearby sales in HP3 9FX
28 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Oct 2025
£280,00010 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Mar 2025
£250,00036 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Jan 2025
£315,0005 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Dec 2024
£320,00020 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Sept 2024
£240,000
Versus other The Embankment homes
On epc rating, 17 Blackwell House stands well clear of the street.
Price per m²
£4,370
Street avg £4,709
Floor Area
73 m²
Street avg 64 m²
CO₂ Emissions
1.4 t/year
Street avg 1.6 t/year
Years Held
4 years
Street avg 6 years
Similar properties nearby
1 Blackwell House, The Embankment, Nash Mills Wharf
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1 Butterfly Crescent, Nash Mills Wharf
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1 Canal View House, Lawn Lane
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1 Athelstan Mews, Athelstan Road
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1 Barnfield
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1 Bevan Close
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1 Apsley Grange
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1 Burnet Close
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Mill Close — bus stop.
Closest school
0.4 km
Nash Mills Church of England Primary School. 18 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
49.8dB

Night-time· 23:00 – 07:00
40.1dB







