Semaphore Farm and Boundary Stones is a Grade II listed building in the East Hampshire local planning authority area, England. First listed on 11 October 1985. Telegraph house. 3 related planning applications.

Semaphore Farm and Boundary Stones

WRENN ID
graven-moulding-spring
Grade
II
Local Planning Authority
East Hampshire
Constituency
East Hampshire MP: Damian Hinds (Con)
Country
England
Date first listed
11 October 1985
Type
Telegraph house
Address
Semaphore Farm and Boundary Stones, Telegraph Lane, Four Marks, GU34 5AW
OS grid reference
SU 680 347
Coordinates
51.10773, -1.02908
Source
Historic England listing

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

Description

Semaphore Farm and Boundary Stones is a telegraph house, now a small dwelling, dating back to 1829. It was constructed as part of a semaphore telegraph line developed by Sir Home Riggs Popham, extending westwards towards Plymouth and branching from the London to Portsmouth route at Chatley Heath (Surrey). The building comprises a square, single-story dwelling above a semi-basement, with two windows on three elevations; one elevation is blank, and there are basement windows to the east and west within oval surrounds. A smaller rectangular block, formerly the operations room, is located centrally, also above a semi-basement, and has a window on each face, although the north window only remains. Sashes are set in reveals. Plain entrances are located in the angles between the two blocks, approached by steps, with a cellar door beside the dwelling's entrance. The dwelling has a hipped roof with a painted brick stack, while the operations wing also has a hipped roof. The building has undergone little alteration. Within the curtilage are two small stone pillars, one bearing a government mark, which define the original boundary of the site.

Local climate

Semaphore Farm and Boundary Stones receives an average of 770 mm of rain a year. This makes it drier than 63% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 53% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 53% of listed buildings. Of these, 14 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 — 3 transactions since 1997
  • Related listed building consents — 3 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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