Topstreet Farmhouse is a Grade II listed building in the St Albans local planning authority area, England. First listed on 9 May 1978. Farmhouse. 5 related planning applications.

Topstreet Farmhouse

WRENN ID
other-rubble-briar
Grade
II
Local Planning Authority
St Albans
Constituency
Harpenden and Berkhamsted MP: Victoria Collins (LD)
Country
England
Date first listed
9 May 1978
Type
Farmhouse
Address
Topstreet Farmhouse, 28, Crabtree Lane, Harpenden Town, AL5 5NU
OS grid reference
TL 140 138
Coordinates
51.81128, -0.3467
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a 16th-century timber-frame farmhouse, later enlarged and altered. It stands on Crabtree Lane in Harpenden. In the 18th century, the house was extended to the rear, creating a double-pile plan. Further alterations occurred in the late 19th century when the external elevations were stuccoed. The roof is covered with plain tiles.

The front elevation retains the original cross wing on the left, with exposed timber framing and decorative pargetting to the panels. A central, two-storey Victorian canted bay window is present, featuring leaded casements which may be a replication of earlier windows. Small, two-light mullioned casements are located to either side, on both the ground and first floors, with original oak frames to the upper floor windows. The corner posts have angular jowles. The entrance doorway is topped by a mid-18th-century bracketed hood with scrolled brackets. To the right of the door is a three-light, segmental-headed casement, which indicates that this section of the house originally served as the hall. A substantial ridge chimney stack is located to the right of the cross wing, exhibiting a 16th-century base, but with 17th-century multiple shafts and brick bands at the top, and Victorian rebuilding. Historical records suggest William Hunt owned the property in 1558, possibly the time of the cross wing and chimney stack’s construction, relating to a pre-existing hall range.

Local climate

Topstreet Farmhouse sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 82% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 79% of listed buildings.

It experiences an average of 32 freeze-thaw cycles a year, fewer than 57% of listed buildings. Of these, 15 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 2 transactions since 2005
  • Related listed building consents — 5 applications
  • 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
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