Model valuation£417,0008 Busby Close
Local market context
Cromwell House, Flat 7, 29 Box Lane, Hemel Hempstead, HP3 0DH
EPC B
Estimated value
£518,000
- Since the 2021 sale (£450,000)+15%
- Against HP3 0DH's recent median (£610,000)-15%
Newest record on this page: July 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.
Property type
Detached
Floor top floor
Floor area
96 m²
1033 sq ft
Energy rating
B
Score 84
About this valuation
How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.
Our estimate
£518,000
- Against its 2021 sale (£450,000)+15%
- Against HP3 0DH's recent median (£610,000)-15%
Your note and figure are shown publicly on this page.
How the estimate is made
The estimate for Cromwell House is modelled from its 96 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in HP3 0DH. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
What it's based on
Floor area
96 m² from the EPC lodged in February 2019
Sales of this home
2 sales recorded, the latest in 2021
Recent sales in HP3 0DH
5 sales, median £610,000 (2025–2020)
This page or the full report?
| Data | This page | Full report |
|---|---|---|
| Sales | Latest sale shown: July 2025 | Latest available records, read when you order |
| Valuation | Estimate from the last refresh | Analysed against comparable sales |
| Planning | None on this home | Full history, plus nearby schemes |
| Flood risk | Not shown | Included |
Sales history & valuation
Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.
Cromwell House changed hands twice within eighteen months — unusual for the area.
Sales timeline
15 January 2021Most recent
£450,000
+4.7%over 11 months12 February 2020
£430,000
Median price across the last 5 sales in HP3 0DH: £610,000 (2025–2020).
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 4, 29 Box Lane, Hemel Hempstead, HP3 0DH
Sold Dec 2020
£563,000
What this page doesn't show
1 potential issue has already been flagged for Cromwell House, Flat 7, 29 Box Lane, Hemel Hempstead, HP3 0DH. The detail, evidence and what to ask about it are in the Risks Report.
- Larger development activity nearbyIn report
- Flood risk from rivers, sea and surface waterIn report
- Subsidence and ground-stability signalsIn report
- Refusals, enforcement and big schemes nearbyIn report
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About Cromwell House
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
Cromwell House is a detached house in Hemel Hempstead (HP3 0DH). It has a recorded floor area of 96 m² (around 1033 sq ft). The latest certificate (February 2019) returns a B (score 84), comfortably above the UK average. At 96 m² this is the 2nd smallest of 10 units on EPC record in Cromwell House, where floor areas span 87–135 m². On EPC score it ranks last in the building (84 versus a best of 86).
At 96 m² it's 23.8% smaller than the typical home in the postcode (126 m² median across 15 EPCs). Across 2020–2021, sale prices on this property compounded at 4.7% per year. Today's modelled estimate of £518,000 is 15.1% above the 2021 sale price. Last sale on file: £450,000 in January 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Before you decide
Everything you need to know about Cromwell House
The true value, the hidden risks and the full sale history, in one report.
Larger development activity nearby
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The data behind every report
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Cromwell House's carbon output is low for the local stock.
Current Certificate
Feb 2019EPC Rating
A
B
B84
C
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Very Good
Windows
Very Good
CO2 Emissions
1.4 t/year
Occupancy
—
Certificate validity
Valid until 26 February 2029
Planning history
Applications and permits filed against Cromwell House, Flat 7, 29 Box Lane, Hemel Hempstead, HP3 0DH, sourced from the PlanIt planning register.
Cromwell House has no planning applications on record.
2
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Versus other Box Lane homes
Four headline reads against 10 similar flats on this street, drawn from the latest EPC and Land Registry data.
On price per m², Cromwell House runs well behind the street norm.
Price per m²
£4,688
Street avg £6,185
Floor Area
96 m²
Street avg 105 m²
CO₂ Emissions
1.4 t/year
Street avg 1.6 t/year
Years Held
6 years
Street avg 6 years
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Hemel Hempstead district page.
Rail-style transport is unusually close for this postcode.
Crime
211/mo
Falling 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.
Nearest schools
- St Rose's Catholic Infant SchoolPrimary937m
- Pixies Hill Primary SchoolPrimary962m
- Oakleaf PrimaryPrimary1.2km
- Boxmoor Primary SchoolPrimary1.3km
Nearest stops
- Boxmoor House SchoolBus stop31m
- Meadow WayBus stop341m
- VP AutoservicesBus stop348m
- Sheethanger CommonBus stop556m
Most reported crime locally
- Violence & Sexual Offences937 reports34%
- Anti-social Behaviour630 reports23%
- Other Theft265 reports10%
- Criminal Damage & Arson174 reports6%
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
Modelled day and night-time noise levels around HP3 0DH from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
55.2dB
Night-time· 23:00 – 07:00
47.5dB
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
Get a survey for this property
Level 2 HomeBuyer Report
Top Floor FlatEPC B
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Start your researchHow to read this page
Where every figure above comes from, how current it is and what it can't tell you.
- How the estimate is made
- The estimate for Cromwell House is modelled from its 96 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in HP3 0DH. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
- Where sold prices come from
- Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for Cromwell House. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
- Reading the EPC
- Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for Cromwell House was lodged in February 2019 at band B and is valid until February 2029. Floor area, heating and insulation details on this page come from it.
- Planning records
- Planning applications are collected from local authority registers through PlanIt. None is matched to Cromwell House. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
- Area figures
- Crime is police-recorded street-level data over the last 13 months, which places each incident at an approximate point. The 15 schools and 30 stops listed are measured in a straight line from HP3 0DH, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Common questions
The questions buyers, sellers and homeowners most often ask about Cromwell House, Flat 7, 29 Box Lane, Hemel Hempstead, HP3 0DH. Each answer is also embedded as structured data for search engines.
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- Every home in HP3 0DHSold prices, values and energy ratings for the postcode
- HP 3 property marketPrices, postcodes, schools and transport across the district
- Cromwell House, Flat 7, 29 Box Lane, Hemel Hempstead valuationHow the estimate is built and what moves it
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