46a, Box Lane, Hemel Hempstead, HP3 0DJ
About 46a
46a is a five-bedroom detached house in Hemel Hempstead (HP3 0DJ). It has a recorded floor area of 270 m² (around 2906 sq ft), construction records dating it to 1967-1975 and council tax band H. Tenure is freehold. The latest certificate (October 2019) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since April 2010. Between certificates, roof efficiency went from Average to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Average and window efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 88), a 2-band jump.
At 270 m² it's 20.3% larger than the typical home in the postcode (224 m² median across 29 EPCs). Across 2003–2020, sale prices on this property compounded at 5.3% per year. On a £-per-square-foot basis, the last sale (£602/sq ft) was about 73.1% above the typical sold price in the postcode. Most recent transfer: August 2020 at £1,750,000. One historical planning record sits against the property in 2021.
What this property has
Inside
- Bedrooms5
Building
- TenureFreehold
Energy performance
46a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Certificate validity
Valid until 2 October 2029
Property Improvements
Changes detected from historical EPC data
Roof insulation improved
More low energy lighting installed
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Planning history
1 application on record at 46a, Box Lane, Hemel Hempstead, HP3 0DJ
- Jan 2021FullOutcome in report
First floor to existing single storey outrigger in matching brickwork to accommodate an ensuite bathroom & wardrobe adjoining the master bedroom, including the provision of 1no matching window to the front elevation and the construction of a new pitched roof in matching tiles and eaves at the same height as existing.
- Documents
- 5 docs on file
- Reference
- 20/03544/FHA
Unlock 46a, Box Lane, Hemel Hempstead, HP3 0DJ's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 2 notable nearby
- The 5 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Sale price has at least doubled since 2003.
£1,778,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.3% per year over 18 years.
£1,750,000
Growth on file: 5.3% per year over 18 years.
Sales timeline
20 August 2020Most recent
£1,750,000
+59.1%over 12 years25 October 2007
£1,100,000
+57.1%over 4 years10 January 2003
£700,000
Median price across the last 5 sales in HP3 0DJ: £1,270,000 (2024–2021).
Nearby sales in HP3 0DJ
56 Box Lane, Hemel Hempstead, HP3 0DJ
Sold Oct 2024
£1,270,00016 Box Lane, Hemel Hempstead, HP3 0DJ
Sold Feb 2022
£1,550,00032 Box Lane, Hemel Hempstead, HP3 0DJ
Sold Jun 2021
£1,910,0001 The Pines, Box Lane, Hemel Hempstead, HP3 0DJ
Sold May 2021
£1,085,00022 Box Lane, Hemel Hempstead, HP3 0DJ
Sold Apr 2021
£1,072,000
Versus other Box Lane homes
Price per m² for 46a runs comfortably ahead of the street norm.
Price per m²
£6,481
Street avg £4,339
Floor Area
270 m²
Street avg 226 m²
Habitable Rooms
8 rooms
Street avg 9 rooms
CO₂ Emissions
9.6 t/year
Street avg 9.6 t/year
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
211/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Sheethanger Common — bus stop.
Closest school
1.4 km
Pixies Hill Primary School. 11 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
47.1dB

Night-time· 23:00 – 07:00
40.5dB







