Model valuation£417,0008 Busby Close
Local market context
28 Blackwell House is a two-bedroom property in Nash Mills Wharf, Hemel Hempstead, Hemel Hempstead (HP3 9FX). It has a recorded floor area of 60 m² (around 646 sq ft) and council tax band D. At 60 m² this is the 10th 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 across 36 units on file. Other recorded features include a balcony. The latest certificate (November 2015) shows a C (score 78), near the top of the C band. Main heating runs on electricity: electricity, unspecified tariff. The latest certificate is from November 2015, so improvements made since then won't be reflected.
A recent sale: £280,000 in October 2025.
28 Blackwell House's carbon output is low for the local stock.
This certificate is over 10 years old and is no longer valid.Expired 19 Nov 2025
Certificate validity
Expired on 19 November 2025
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28 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.
28 Blackwell House saw 3 transfers in just over a decade — high turnover for the postcode.
£291,000
Modelled from EPC, postcode comparables and a sale-price growth of -0.4% per year over 10 years.
£280,000
Growth on file: -0.4% per year over 10 years.
23 October 2025Most recent
£280,000
-11.1%over 7 years28 June 2018
£315,000
+7.7%over 2 years16 December 2015
£292,500
Median price across the last 5 sales in HP3 9FX: £285,000 (2025–2024).
19 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Sept 2025
15 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Jul 2025
10 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Mar 2025
36 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Jan 2025
5 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Dec 2024
Years Held for 28 Blackwell House lags the street by a wide margin.
Price per m²
£4,667
Street avg £4,735
Floor Area
60 m²
Street avg 64 m²
CO₂ Emissions
1.5 t/year
Street avg 1.5 t/year
Years Held
1 years
Street avg 6 years
Property research, connected
Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.
Start your researchHP3 9FX
HP3 9SY
HP3 9PJ
HP3 9EX
HP3 9GY
HP3 9GS
HP3 9JS
HP3 9DE
Rail-style transport is unusually close for this postcode.
Crime
211/mo
Falling 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.

Daytime· 07:00 – 23:00
49.8dB

Night-time· 23:00 – 07:00
40.1dB