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Get started1 Brownlow Farm Barns is a three-bedroom detached house in Hemel Hempstead (HP1 2SN). It has a recorded floor area of 148 m² (around 1593 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (June 2017) shows a D (score 63), on the cusp of jumping into the C band. Earlier certificates rated it C (April 2012); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 80).
Sale prices here have outpaced England HPI: 4.5% per year against 0% for the wider region. Today's modelled estimate of £878,000 is 13.3% above the 2017 sale price. At 148 m² the property is well over the postcode median (75 m² across 8 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). On the market in November 2017 and unlisted since — roughly 9 years. Across the public record there are 4 sales, relatively high churn for a single property. 9 planning records sit against the property, 6 approved, 3 refused. Past consents include a loft conversion and an extension, meaningful when judging how the property has evolved.
1 Brownlow Farm Barns's carbon output runs well above what efficient homes in the postcode produce.
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
Loft conversion to habitable space and addition of a small gable window
1 Brownlow Farm Barns valuation sits well clear of the typical sold price in this postcode.
£878,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.5% per year over 13 years.
£775,000
Growth on file: 4.5% per year over 13 years.
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On floor area, 1 Brownlow Farm Barns stands well clear of the street.
Price per m²
£5,236
Street avg £6,494
Floor Area
148 m²
Street avg 88 m²
Habitable Rooms
6 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
0.6 km

Daytime· 07:00 – 23:00
44.4dB

Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Non material amendment to planning permission 4/03379/14/fha - single storey side extension
7 more applications for this property
Join to see all planning history.
14 November 2017Most recent
£775,000
+46.2%over 3 years25 November 2013
£530,000
+6.0%over 4 years7 May 2009
£500,000
+14.9%over 4 years23 August 2004
£435,000
Median price across the last 5 sales in HP1 2SN: £640,000 (2025–2021).
2 Brownlow Farm Barns Pouchen End Lane Hemel Hempstead
Sold Aug 2025
5 Brownlow Farm Barns Pouchen End Lane Hemel Hempstead
Sold Dec 2022
8 Brownlow Farm Barns Pouchen End Lane Hemel Hempstead
Sold Aug 2022
9 Brownlow Farm Barns Pouchen End Lane Hemel Hempstead
Sold Aug 2021
3 Brownlow Farm Barns Pouchen End Lane Hemel Hempstead
Sold Jun 2021
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Street avg 4 rooms
CO₂ Emissions
6.4 t/year
Street avg 3.3 t/year
HP1 2SD
The Avenue — bus stop.
Closest school
0.8 km
John F Kennedy Catholic School. 14 schools nearby.
Night-time· 23:00 – 07:00
36.3dB