Model valuation£417,0008 Busby Close
Local market context
31 Blackwell House is a two-bedroom property in Nash Mills Wharf, Hemel Hempstead, Hemel Hempstead (HP3 9FX). It has a recorded floor area of 62 m² (around 667 sq ft) and council tax band D. At 62 m² this is the 15th 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 76), 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.
Most recent transfer: November 2023 at £285,000.
This certificate is over 10 years old and is no longer valid.Expired 19 Nov 2025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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31 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.
£293,000
Modelled from EPC, postcode comparables and a sale-price growth of -0.2% per year over 8 years.
£285,000
Growth on file: -0.2% per year over 8 years.
17 November 2023Most recent
£285,000
-1.7%over 7 years21 December 2015
£290,000
Median price across the last 5 sales in HP3 9FX: £280,000 (2025–2025).
28 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX
Sold Oct 2025
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
Price per m²
£4,597
Street avg £4,737
Floor Area
62 m²
Street avg 64 m²
CO₂ Emissions
1.7 t/year
Street avg 1.5 t/year
Years Held
3 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