The structures date from different periods.
The earliest surviving building, the huge malthouse which with the kilns is 45 metres (148 ft) long, is probably of the mid-18th century; it predates the Hardys’ arrival.
The later parts, of the early 19th century, include the remodelled and expanded malt-kilns and the 1814 recladding of the large 18th-century tun room.
Both buildings, and the brewery linking them, were designed by William Hardy junior’s architect William Mindham (1771–1843).
His trademark use of heavy eaves, textured roof tiles and recessed panels of flint between brick pilasters can be seen in the complex.
The twin conical cowls, restored in 2002, atop the malt-kilns form a local landmark.

The brewery buildings ran west alongside the main road from the malt-mill beside the kilns to the tun room.
They burned down in the fire of 24 April 1936 which also destroyed the waterwheel and malt-mill above it; the malthouse, kilns, tun room, stables, carpenter’s shop and clerk’s cottage east of the malthouse survived.

The wheel had last been used for malting and beer-brewing in 1895 or 1896, prior to the sale of the business to Morgans Brewery Co. Ltd of Norwich on 12 March 1896; their interest lay only in the tied houses.
Morgan’s did not go into beer production on the site, instead using it for a very few years to 1906 or earlier as a ginger beer factory and then for a further few years as a branch store for their bottled ginger beer.
From 1903 a ram performed the waterwheel’s remaining function of pumping water uphill to the former brewery reservoir of 1787.
The structures date from different periods. The earliest surviving building, the huge malthouse which with the kilns is 45 metres (148 ft) long, is probably of the mid-18th century; it predates the Hardys’ arrival. The later parts, of the early 19th century, include the remodelled and expanded malt-kilns and the 1814 recladding of the large 18th-century tun room. Both buildings, and the brewery linking them, were designed by William Hardy junior’s architect William Mindham (1771–1843). His trademark use of heavy eaves, textured roof tiles and recessed panels of flint between brick pilasters can be seen in the complex. The twin conical cowls, restored in 2002, atop the malt-kilns form a local landmark.
The brewery buildings ran west alongside the main road from the malt-mill beside the kilns to the tun room. They burned down in the fire of 24 April 1936 which also destroyed the waterwheel and malt-mill above it; the malthouse, kilns, tun room, stables, carpenter’s shop and clerk’s cottage east of the malthouse survived.
The wheel had last been used for malting and beer-brewing in 1895 or 1896, prior to the sale of the business to Morgans Brewery Co. Ltd of Norwich on 12 March 1896; their interest lay only in the tied houses. Morgan’s did not go into beer production on the site, instead using it for a very few years to 1906 or earlier as a ginger beer factory and then for a further few years as a branch store for their bottled ginger beer. From 1903 a ram performed the waterwheel’s remaining function of pumping water uphill to the former brewery reservoir of 1787.
Letheringsett Brewery watermill