Old Mill House, Upper Flat, Grove Mill Lane, Watford, WD17 3TU
About Old Mill House
Old Mill House is a detached house in Watford (WD17 3TU). It has a recorded floor area of 117 m² (around 1259 sq ft) and construction records dating it to before 1900. The latest certificate (October 2021) 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 November 2010. Between certificates, lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 80).
At 117 m² the property is well over the postcode median (54 m² across 10 EPCs), placing it in the larger end of the local stock. 2 planning records sit against the property, 0 approved, 0 refused.
Everything you need to know about Old Mill House
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Planning history
Planning history at Old Mill House is exclusively tree-management applications — typical for a property with mature trees on or near the plot.
- Oct 2007
- Aug 2007
We flagged 2 things worth checking at Old Mill House
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
- Environmental risk flagged
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Sales history & valuation
Old Mill House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£530,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in WD17 3TU: £345,000 (2024–2020).
Nearby sales in WD17 3TU
7 The Grove Mill, Grove Mill Lane, Watford, WD17 3TU
Sold Jun 2024
£330,0001 The Grove Mill, Grove Mill Lane, Watford, WD17 3TU
Sold Nov 2023
£360,0009 The Grove Mill, Grove Mill Lane, Watford, WD17 3TU
Sold Nov 2022
£400,0003 The Grove Mill, Grove Mill Lane, Watford, WD17 3TU
Sold Jul 2022
£306,00011 The Grove Mill, Grove Mill Lane, Watford, WD17 3TU
Sold Aug 2018
£250,000
Versus other Grove Mill Lane homes
On floor area, Old Mill House stands well clear of the street.
EPC Rating
67 (D)
Street avg 65 (D)
Floor Area
117 m²
Street avg 71 m²
CO₂ Emissions
4.5 t/year
Street avg 3.8 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
Everything you need to know about Old Mill House
The true value, the hidden risks and the full sale history, in one report.
30-day money-back guarantee
The data behind every report
Similar properties nearby
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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
10/mo
Steady year-on-year across the wider district.
Nearest stop
0.4 km
Grove Mill Lane — bus stop.
Closest school
0.7 km
Holy Rood Catholic Primary School. 26 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
48.5dB
Night-time· 23:00 – 07:00
40.9dB