RCHME survey of house in Trinity Street. The house 'was built in the 16th century, but has no old features externally. Inside the building, both the ground and first floors have original moulded ceiling beams'.<1> Corresponds to No 7 Trinity Street, according to the Listing description.

DOE survey of No 7 Trinity Street. Grade II. C16 origin, completely altered externally C18 and later. Two storeys and attics, the roofs tiled. Big brick archway leading to No 8 through the centre of the building. The north part has a one-window range, double hung sashes with glazing bars, small pediment head door case. The south part of the building has a modern ground floor office extension on the front.<2>

Dendrochronological investigation was undertaken by Martin Bridge in 2016. The timbers in the main range of Tymperleys, currently used as the tea shop, were found to have too few rings for dating. A single timber, in No 7 Trinity St (the bookshop), yielded a 97 year sequence which was subsequently dated to the period 1290–1386. The outer ring was thought to be very close to the heartwood-sapwood (H/S) boundary although not the actual boundary. The likely felling date range is therefore given as c 1396–1428 as it is not possible to be more accurate than this without a certain H/S boundary.<3>