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Get started10 St Margarets is a semi-detached house in Great Gaddesden, Hemel Hempstead, Hemel Hempstead (HP1 3BZ). It has a recorded floor area of 212 m² (around 2282 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (February 2025) shows an E (score 50), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since July 2011. Between certificates, lighting went from Poor to Very Good; while main heating dropped from Average to Poor. The recommended improvements would lift it to C (score 77), a 2-band jump. Main heating runs on lpg.
Sale prices here have outpaced England HPI: 3% per year against 0% for the wider region. Today's modelled estimate of £932,000 sits 57.7% above the 2014 sale of £591,000. On a £-per-square-foot basis, the last sale (£259/sq ft) was about 28.3% below the postcode norm. At 212 m² the property is well over the postcode median (151 m² across 11 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 73% of similar EPCs). 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Last sold in January 2014, so it's been off the market for around 12 years.
10 St Margarets's carbon output runs well above what efficient homes in the postcode produce.
10 St Margarets has an approved rear extension on the planning record.
Construction of new garden shed / outbuilding
10 St Margarets valuation sits well clear of the typical sold price in this postcode.
£932,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.0% per year over 15 years.
£591,000
Growth on file: 3.0% per year over 15 years.
Everything we know about this property, compiled into one in-depth, downloadable report.
Price per m² for 10 St Margarets lags the street by a wide margin.
Price per m²
£2,788
Street avg £4,536
Floor Area
212 m²
Street avg 209 m²
Habitable Rooms
8 rooms
Street avg 7 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
16/mo
Steady year-on-year across the wider district.
Nearest stop
0.8 km

Daytime· 07:00 – 23:00
42.6dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Glazing upgraded to newer, more efficient type
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Extension: Rear of property
Removal of existing conservatory and construction of part two storey and part single storey rear extension
16 January 2014Most recent
£591,000
+53.5%over 14 years7 May 1999
£385,000
Median price across the last 5 sales in HP1 3BZ: £1,145,500 (2023–2018).
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Detailed EPC data
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Full planning history
Every application and decision on record
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CO₂ Emissions
6.3 t/year
Street avg 6.6 t/year
HP1 3RR
Church Meadow — bus stop.
Closest school
0.7 km
Great Gaddesden Church of England Primary School. 2 schools nearby.
Night-time· 23:00 – 07:00
35.6dB