21, Mill Road is a Grade II listed building in the North Hertfordshire local planning authority area, England. First listed on 11 June 1976. A 19th century House. 1 related planning application.
21, Mill Road
- WRENN ID
- scarred-lime-magpie
- Grade
- II
- Local Planning Authority
- North Hertfordshire
- Constituency
- North East Hertfordshire MP: Chris Hinchliff (Lab)
- Country
- England
- Date first listed
- 11 June 1976
- Type
- House
- Period
- 19th century
- Address
- 21, Mill Road, Royston, SG8 7AE
- OS grid reference
- TL 356 411
- Coordinates
- 52.05228, -0.02308
- Source
- Historic England listing
Description
21 Mill Road is a mid-19th century building constructed from flint rubble with gault brick dressings and quoins. The roof is covered with Welsh slate and features ornamental pierced bargeboards on the side gables. The building stands two storeys high, with end pilasters and a projecting center. It has a symmetrical arrangement of sash windows, with three sets of 1:1:1 glazing bars set in reveals beneath cambered arches. The central entrance consists of a six-panelled door topped by a fanlight with glazing bars, all within a round arched reveal that is framed by a round arched panel. There are two chimneystacks, each with pairs of battered shafts that have rounded bases and caps.
Local climate
21, Mill Road sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 97% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 77% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, more than 50% of listed buildings. Of these, 16 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
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- No EPC on record for this property
- 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.
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