Cromwell House, 29 Box Lane, Hemel Hempstead, HP3 0DH
About Cromwell House
Cromwell House is a detached house in Hemel Hempstead (HP3 0DH). It has a recorded floor area of 102 m² (around 1098 sq ft) and council tax band H. The latest certificate (February 2019) returns a high B (score 85), putting the home a stone's throw from an A rating. At 102 m² this is the 3rd smallest of 10 units on EPC record in Cromwell House, where floor areas span 87–135 m².
Today's modelled estimate of £756,000 is 46.8% below the 2017 sale of £1,420,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£1,293/sq ft) was about 202.8% above the typical sold price in the postcode. 14 planning records sit against the property, 13 approved, 0 refused, 1 pending. Past consents include tree works and partial demolition, meaningful when judging how the property has evolved. An active application for tree works is awaiting a decision. Last sold in September 2017, so it's been off the market for around 9 years. At 102 m² it's 15.7% smaller than the typical home in the postcode (121 m² median across 14 EPCs).
Energy performance
Cromwell House's carbon output is low for the local stock.
EPC Rating
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Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
14 applications on record at Cromwell House, 29 Box Lane, Hemel Hempstead, HP3 0DH
- Oct 2016DemolitionFullOutcome in report
Demolition of existing residential building and outbuildings. construction of a 3 storey residential development comprising of 9 apartments, new landscaping, parking and modified side access
- Documents
- 28 docs on file
- Reference
- 4/01810/16/FUL
- More recent applications — locked
- Tree WorksJun 2025Decision
- Tree WorksJun 2022Decision
+ 11 more applications in the report
Unlock Cromwell House, 29 Box Lane, Hemel Hempstead, HP3 0DH's full planning history
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- Every decision — granted, refused or withdrawn (13 on record)
- All 14 applications on this property in full, plus 2 notable nearby
- The 98 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Cromwell House valuation sits well clear of the typical sold price in this postcode.
£756,000
Modelled from EPC, postcode comparables.
£1,420,000
Recorded with HM Land Registry.
Sales timeline
20 September 2017Most recent
£1,420,000
Median price across the last 5 sales in HP3 0DH: £610,000 (2025–2021).
Nearby sales in HP3 0DH
13 Box Lane, Hemel Hempstead, HP3 0DH
Sold Jul 2025
£2,200,000Cromwell House, Flat 2, 29 Box Lane, Hemel Hempstead, HP3 0DH
Sold Oct 2024
£610,000Cromwell House, Flat 8, 29 Box Lane, Hemel Hempstead, HP3 0DH
Sold Feb 2024
£475,0001 Box Lane, Hemel Hempstead, HP3 0DH
Sold Jan 2021
£885,000Cromwell House, Flat 7, 29 Box Lane, Hemel Hempstead, HP3 0DH
Sold Jan 2021
£450,000
Versus other Box Lane homes
Price per m² for Cromwell House runs comfortably ahead of the street norm.
Price per m²
£13,922
Street avg £5,159
Floor Area
102 m²
Street avg 104 m²
CO₂ Emissions
1.3 t/year
Street avg 1.6 t/year
Years Held
9 years
Street avg 6 years
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Boxmoor House School — bus stop.
Closest school
0.9 km
St Rose's Catholic Infant School. 15 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
55.2dB

Night-time· 23:00 – 07:00
47.5dB







