Hamper Mill House is a Grade II listed building in the Three Rivers local planning authority area, England. First listed on 3 October 1985. House. 1 related planning application.
Hamper Mill House
- WRENN ID
- twisted-corbel-nightshade
- Grade
- II
- Local Planning Authority
- Three Rivers
- Constituency
- South West Hertfordshire MP: Mr Gagan Mohindra (Con)
- Country
- England
- Date first listed
- 3 October 1985
- Type
- House
- Address
- Hamper Mill House, Hampermill Lane, Watford Rural, WD19 4PL
- OS grid reference
- TQ 097 939
- Coordinates
- 51.63355, -0.4155
- Source
- Historic England listing
Description
Hamper Mill House is a house built in the late 18th century, with extensions added in the late 19th or early 20th century. It is constructed of red brick and features a hipped tile roof. The building has two storeys and a partially obscured basement. Originally, it had four bays, but it has been extended by one bay to the left. The entrance is located in the second bay from the right and consists of a panelled door with a semi-circular traceried fanlight set in an arched reveal. The windows are glazing bar sashes in shallow reveals with gauged brick flat arched heads, while the first floor has small six-pane sashes. A mutuled timber eaves cornice runs along the top. There is a cross axial stack at the original left end, and basement windows are present on the left side. The three-storey right return has 20th-century alterations, including a large canted bay window on the first floor. The left return and rear have a mix of scattered sashes and casements. At the rear right, there is a large slightly extruded stack that adjoins The Old Cottage.
Local climate
Hamper Mill House sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 93% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 91% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% of listed buildings. Of these, 13 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
Sign in or create a free account to unlock:
- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- No sale records on file
- Related listed building consents — 1 application
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings
Nearby listed buildings
- The Old Cottage
- Hamper Mill Cottage
- Clock House at Hamper Mill
- Porters Lodge at Merchant Taylors School
- Merchant Taylors School
- Statue of Sir Thomas White at Merchant Taylor's School
- Oxhey Hall
- Upland Court
- Barn on East Side of Yard at Northwood Preparatory School
- Moor Farm House at Northwood Preparatory School