Offwell Farmhouse is a Grade II listed building in the Winchester local planning authority area, England. Farmhouse. 5 related planning applications.

Offwell Farmhouse

WRENN ID
ancient-corridor-sparrow
Grade
II
Local Planning Authority
Winchester
Constituency
Fareham and Waterlooville MP: Suella Braverman (RUK)
Country
England
Type
Farmhouse
Address
Offwell Farmhouse, Portchester Lane, Southwick and Widley, PO17 6DX
OS grid reference
SU 620 078
Coordinates
50.86682, -1.11983
Source
Historic England listing

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

Description

Offwell Farmhouse is a house dating from the early 18th century, with alterations from the early 19th century and extensions from the mid 19th century. The walls are constructed of brickwork in Flemish Garden Wall bond with cambered openings, while other walls are in Flemish bond, featuring blue headers on the south wing. Some areas have tile-hanging. The roof is tiled, with a catslide at the rear and a hip above a narrow rear staircase block, while the wings have gables that end in a hip above a single-storey section.

The main block has a projecting east wing on the south side, which leads to a south wing that drops to a single-storey, creating a Z-shape. The east front was originally symmetrical with two storeys and five windows, but this has now been reduced to two windows, with the south side obscured by the wing. The early 19th-century sashes are in exposed frames. There is a gabled brick porch with an arched opening. Other elevations display irregular fenestration, featuring casements and a sash window at the stairway. Inside, the original staircase remains, with an adjusted lowest flight, turned balusters, and slatted balusters on the top flight.

Local climate

Offwell Farmhouse receives an average of 810 mm of rain a year. This makes it drier than 52% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.

It experiences an average of 19 freeze-thaw cycles a year, fewer than 79% of listed buildings. Of these, 8 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.
  • No sale records on file
  • 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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