Telford House, Harbour Street, Portmahomack is a Grade A listed building in the Highland local planning authority area, Scotland. First listed on 25 March 1971. Warehouse.

Telford House, Harbour Street, Portmahomack

WRENN ID
eastward-brick-barley
Grade
A
Local Planning Authority
Highland
Constituency
Caithness, Sutherland and Easter Ross MP: Jamie Stone (LD)
Country
Scotland
Date first listed
25 March 1971
Type
Warehouse
Address
Telford House, Harbour Street, Portmahomack, IV20 1YG
OS grid reference
NH 915 846
Coordinates
57.83815, -3.82824
Source
Historic Environment Scotland listing

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

Description

Telford House is a late 17th century, two-storey, four-bay warehouse located on Harbour Street in Portmahomack. The building features harled pointed rubble with ashlar dressings. The ground floor includes two doors and six small square windows, along with two rectangular vents at the wallhead. At the south gable, there are two large buttresses, and a forestair leads to the first floor entrance at the north gable, which is shared with the northern warehouse. The rear has small vents cut in single blocks of stone. The building has crowstepped gables, cavetto skewputts, a slate roof, and a stone ridge.

Inside, there is an open timber roof with pegged collar rafters, and the sole plates and ashlar posts are intact at the wallhead.

Local climate

Telford House, Harbour Street, Portmahomack receives an average of 870 mm of rain a year. This makes it wetter than 62% 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 40 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 27 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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 sale records on file
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  • 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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