57a, Flat 3, High Street, Hemel Hempstead, HP1 3AF
About 57a
57a is a semi-detached house in Hemel Hempstead (HP1 3AF). It has a recorded floor area of 20 m² (around 215 sq ft) and construction records dating it to 1900-1929. At 20 m² this is the smallest unit on EPC record across 57a (20–62 m²). The building's EPC ratings span F to D across 5 units on file. The latest certificate (November 2022) shows an E (score 54), well below the UK norm with real room to improve. When first surveyed in November 2009 the rating was F, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Good and lighting went from Very Poor to Very Good. The recommended improvements would lift it to C (score 78), a 2-band jump. Main heating runs on electricity.
At 20 m² it sits well below the postcode median (53 m² across 34 EPCs), making it one of the more compact homes locally.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water system upgraded
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
57a has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
57a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£147,000
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 3AF: £245,000 (2022–2021).
Nearby sales in HP1 3AF
60 High Street, Hemel Hempstead, HP1 3AF
Sold Sept 2022
£820,000Flat 2, 71 High Street, Hemel Hempstead, HP1 3AF
Sold Nov 2021
£250,00067b, High Street, Hemel Hempstead, HP1 3AF
Sold Nov 2021
£245,00067a, High Street, Hemel Hempstead, HP1 3AF
Sold Sept 2021
£215,00057a, High Street, Hemel Hempstead, HP1 3AF
Sold Aug 2021
£180,000
Versus other High Street homes
Floor Area for 57a lags the street by a wide margin.
EPC Rating
54 (E)
Street avg 61 (D)
Floor Area
20 m²
Street avg 52 m²
CO₂ Emissions
2.2 t/year
Street avg 3.6 t/year
Habitable Rooms
1 rooms
Street avg 2 rooms
Similar properties nearby
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57a, Flat 4, High Street
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The neighbourhood at a glance
Crime
16/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
The Old Town Hall — bus stop.
Closest school
0.2 km
George Street Primary School. 34 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
53.7dB

Night-time· 23:00 – 07:00
43.5dB







