18a, The Square, Marlowes, Hemel Hempstead, HP1 1ER
About 18a
18a is an end-of-terrace house in Hemel Hempstead (HP1 1ER). It has a recorded floor area of 60 m² (around 646 sq ft) and construction records dating it to 1950-1966. The latest certificate (October 2021) shows a D (score 58), a step below the typical UK home. The rating has held steady at D across 2 certificates since May 2010. Between certificates, roof efficiency dropped from Poor to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 74). At 60 m² this is the 13th smallest of 16 units on EPC record in the building, where floor areas span 27–63 m². The building's EPC ratings span E to C across 16 units on file.
At 60 m² the property is well over the postcode median (29 m² across 15 EPCs), placing it in the larger end of the local stock.
Everything you need to know about 18a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
The data behind every report
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Get a survey for this property
Level 2 HomeBuyer Report
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
Planning history
18a 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
18a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£236,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in HP1 1ER: £120,000 (2025–2018).
Nearby sales in HP1 1ER
3 The Square, Marlowes, Hemel Hempstead, HP1 1ER
Sold Aug 2025
£910,00012 The Square, Marlowes, Hemel Hempstead, HP1 1ER
Sold Nov 2023
£120,00011 The Square, Marlowes, Hemel Hempstead, HP1 1ER
Sold Jul 2023
£115,00016 The Square, Marlowes, Hemel Hempstead, HP1 1ER
Sold Sept 2020
£120,0002 The Square, Marlowes, Hemel Hempstead, HP1 1ER
Sold Sept 2011
£92,500
Versus other The Square homes
CO₂ Emissions for 18a lags the street by a wide margin.
EPC Rating
58 (D)
Street avg 63 (D)
Floor Area
60 m²
Street avg 39 m²
CO₂ Emissions
3.8 t/year
Street avg 2.5 t/year
Habitable Rooms
3 rooms
Street avg 2 rooms
Everything you need to know about 18a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
1 Bulbourne House, Cotterells
HP1 1AP
1 Bridge Court, Bridge Street
HP1 1FU
1 Augustus House, Dacorum Way
HP1 1DP
1 Adrian Close
HP1 1AW
1 Andersons Croft, Cotterells
HP1 1AG
1 Bury Green
HP1 1XP
1 Caesar House, Dacorum Way
HP1 1DR
1 Charles Street
HP1 1JH
The neighbourhood at a glance
Crime
16/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Combe Street — bus stop.
Closest school
0.5 km
South Hill Primary School. 32 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
52.3dB
Night-time· 23:00 – 07:00
42.2dB