What did 23 Blackwell House, The Embankment, HP3 9FX sell for?

23 Blackwell House, The Embankment, HP3 9FX last sold for £320,000 in May 2020, around 6 years ago. Before that, it sold for £290,000 in November 2015, so prices have been rising over 5 years on record. Source: HM Land Registry.

How has the value of 23 Blackwell House, The Embankment, HP3 9FX changed over time?

Across 2 sales between November 2015 and May 2020, 23 Blackwell House, The Embankment, HP3 9FX rose from £290,000 to £320,000, a change of £30,000. That works out to roughly +2.2% per year compounded over 5 years. Source: HM Land Registry.

What is the EPC rating for 23 Blackwell House, The Embankment, HP3 9FX?

The current EPC rating for 23 Blackwell House, The Embankment, HP3 9FX is C with a score of 79 out of 100, lodged in October 2015. Source: EPC Register.

How big is 23 Blackwell House, The Embankment, HP3 9FX?

23 Blackwell House, The Embankment, HP3 9FX has a recorded floor area of 60 m² (646 sq ft). That makes it about 12% smaller than the median EPC-recorded property in HP3 9FX. Source: EPC Register.

What heating system does 23 Blackwell House, The Embankment, HP3 9FX use?

The latest EPC at 23 Blackwell House, The Embankment, HP3 9FX records electricity: electricity, unspecified tariff as the main heating fuel. Source: EPC Register.

What is the council tax band for 23 Blackwell House, The Embankment, HP3 9FX?

23 Blackwell House, The Embankment, HP3 9FX is in council tax band D.

Which area is 23 Blackwell House, The Embankment, HP3 9FX in?

23 Blackwell House, The Embankment, HP3 9FX sits in Nash Mills Wharf, Hemel Hempstead, Hemel Hempstead. It falls within the HP3 postcode district in Hertfordshire.

How safe is the area around 23 Blackwell House, The Embankment, HP3 9FX?

Police records around 23 Blackwell House, The Embankment, HP3 9FX show an average of 211 reported crimes per month over the last 13 months. Violent crime makes up roughly 34% of reports, the most common category. The overall trend is falling (24% versus the prior period). Source: Police UK.

What schools are near 23 Blackwell House, The Embankment, HP3 9FX?

The closest primary school to 23 Blackwell House, The Embankment, HP3 9FX is Nash Mills Church of England Primary School (355m), one of 14 primaries within walking distance. The closest secondary is Longdean School (1.6km), with 4 secondaries in the surrounding area.

How well connected is 23 Blackwell House, The Embankment, HP3 9FX?

The closest bus stop to 23 Blackwell House, The Embankment, HP3 9FX is Mill Close, 185m away. The nearest rail option is Apsley Rail Station, 800m away.

Calculators

Featured

UK House Price Map

30 years of UK sold prices mapped by postcode district.

Postcode-level detail
Compare areas side by side

Open the map

23 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX

Estimated value

£276,000

Since the 2020 sale (£320,000)-14%
Against HP3 9FX's recent median (£280,000)-1%

Newest record on this page: October 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation

Floor area

60 m²

646 sq ft

Energy rating

Score 79

Council tax

Band D

Get directions

Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£276,000

Against its 2020 sale (£320,000)-14%
Against HP3 9FX's recent median (£280,000)-1%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 23 Blackwell House is modelled from its 60 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in HP3 9FX. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

Floor area
60 m² from the EPC lodged in October 2015
Sales of this home
2 sales recorded, the latest in 2020
Recent sales in HP3 9FX
5 sales, median £280,000 (2025–2025)

This page or the full report?

Data	This page	Full report
Sales	Latest sale shown: October 2025	Latest available records, read when you order
Valuation	Estimate from the last refresh	Analysed against comparable sales
Planning	None on this home	Full history, plus nearby schemes
Flood risk	Not shown	Included

Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Sales timeline

27 May 2020Most recent
£320,000
+10.3%over 4 years
13 November 2015
£290,000

Median price across the last 5 sales in HP3 9FX: £280,000 (2025–2025).

Nearby sales in HP3 9FX

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.

Flood risk from rivers, sea and surface waterIn report
Subsidence and ground-stability signalsIn report
Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 23 Blackwell House

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

23 Blackwell House is a 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. The latest certificate (October 2015) shows a C (score 79), near the top of the C band. Main heating runs on electricity: electricity, unspecified tariff. The latest certificate is from October 2015, so improvements made since then won't be reflected.

Across 2015–2020, sale prices on this property compounded at 2.2% per year. Today's modelled estimate of £276,000 is 13.7% below the 2020 sale of £320,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£495/sq ft) was about 15.1% above the typical sold price in the postcode. Last sale on file: £320,000 in May 2020.

Before you decide

Everything you need to know about 23 Blackwell House

The true value, the hidden risks and the full sale history, in one report.

Pick your report · from £14.99

One time fee only - money back guarantee

The data behind every report

Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

23 Blackwell House's carbon output is low for the local stock.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 26 Oct 2025

Current Certificate

Oct 2015

EPC Rating

C79

Main Heating

Electric

Main Fuel

Electric

Hot Water

Very Poor

Windows

Very Good

CO2 Emissions

1.4 t/year

Occupancy

—

Certificate validity

Expired on 26 October 2025

New assessment needed to sell or let

Planning

Planning history

Applications and permits filed against 23 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX, sourced from the PlanIt planning register.

23 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.

On the street

Versus other The Embankment homes

Four headline reads against 35 similar flats on this street, drawn from the latest EPC and Land Registry data.

On price per m², 23 Blackwell House stands well clear of the street.

Price per m²

£5,333

Street avg £4,716

Strongly above

Floor Area

60 m²

Street avg 64 m²

Below

CO₂ Emissions

1.4 t/year

Street avg 1.5 t/year

Above

Years Held

6 years

Street avg 5 years

Above

Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Hemel Hempstead district page.

Full Hemel Hempstead report

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.

Nearest schools

Nash Mills Church of England Primary SchoolPrimary355m
Belswains Primary SchoolPrimary1.0km
Chambersbury Primary SchoolPrimary1.2km
Kings Langley Primary SchoolPrimary1.3km

Nearest stops

Mill CloseBus stop185m
Red Lion LaneBus stop185m
Rucklers LaneBus stop190m
Doolittle MeadowsBus stop277m

Most reported crime locally

Violence & Sexual Offences937 reports34%
Anti-social Behaviour630 reports23%
Other Theft265 reports10%
Criminal Damage & Arson174 reports6%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around HP3 9FX from Defra's strategic mapping. The pin marks this postcode's centroid.

Daytime· 07:00 – 23:00

49.8dB

Low

Night-time road noise heatmap for HP3 9FX

Night-time· 23:00 – 07:00

40.1dB

Low

55 dB

60 dB

65 dB

70 dB

75 dB

80 dB

Defra Road Noise Strategic Mapping, Round 4

Get a survey for this property

Level 2 HomeBuyer Report

Mid Floor FlatEPC C

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £545 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.

£281k

1 Athelstan Mews, Athelstan Road

HP3 9QE

£270k

1 Apsley Grange

HP3 9SY

2 bed

£289k

1 Canal View House, Lawn Lane

HP3 9HS

£258k

1 Barn Close

HP3 9PJ

2 bed1 bath

£301k

1 Blackwell House, The Embankment, Nash Mills Wharf

HP3 9FX

2 bed2 bath

£227k

1 Belswains Green

HP3 9PL

£225k

1 Bond Court, Stationers Place

HP3 9YP

£352k

1 Barnfield

HP3 9QH

Property research, connected

Get up to date data on unlimited properties per month

Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.

Start your research

Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.

Valuation method in detail

How the estimate is made: The estimate for 23 Blackwell House is modelled from its 60 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in HP3 9FX. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from: Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for 23 Blackwell House. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC: Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 23 Blackwell House was lodged in October 2015 at band C and expired in October 2025, so a new one is needed to sell or let. Floor area, heating and insulation details on this page come from it.
Planning records: Planning applications are collected from local authority registers through PlanIt. None is matched to 23 Blackwell House. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures: Crime is police-recorded street-level data over the last 13 months, which places each incident at an approximate point. The 18 schools and 30 stops listed are measured in a straight line from HP3 9FX, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band: 23 Blackwell House is in council tax band D. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 23 Blackwell House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9FX. Each answer is also embedded as structured data for search engines.

Know this home? Think our valuation is wrong?

Leave a note for other visitors about work done or anything the records miss, and say what you think it's worth. It takes about two minutes.