The Mercant House is a Grade II listed building in the Mid Suffolk local planning authority area, England. First listed on 12 January 1973. House.

The Mercant House

WRENN ID
hidden-dormer-flax
Grade
II
Local Planning Authority
Mid Suffolk
Constituency
Central Suffolk and North Ipswich MP: Patrick Spencer (Con)
Country
England
Date first listed
12 January 1973
Type
House
Address
The Mercant House, The Merchant House, 24, Gracechurch Street, Debenham, Stowmarket, IP14 6RE
OS grid reference
TM 172 632
Coordinates
52.22478, 1.17904
Source
Historic England listing

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

Description

House. Dating to the late 14th century, with a parlour cell from the 15th century, largely reconstructed in the late 17th century, and renovated in the 1970s. The house is timber framed with smooth render, and has a pantiled roof, half-hipped to the right with a gablet. The right gable end has a plinth of coursed flint rubble, extending under part of the house and potentially representing the 12th century foundations of St Mary of Grace church. The building has a three-cell form, originally including an open hall. It now has mainly reconstructed mullioned windows, with a tall hall window moved from its original position. A former shop window to the right has a boarded shutter, and a lower window in the right gable end has a pent roof. A cross-entry has a plank door dated 1694, brought from elsewhere. A raking dormer is located to the left. An internal stack has a plain axial shaft.

Inside, the medieval frame retains reverse-curved braces. A stop-splayed scarf joint with undersquinted and sallied butts and face pegs is visible in the rear wallplate. An open truss retains the head of a 14th century crown-post with thick four-way bracing, though the cruciform shaft of the post is a mid-20th century replacement made to the original profile. The tie beam is a replacement re-using the old braces. The remainder of the medieval roof is largely intact, with the half-hipped end reconstructed in the mid-20th century. A collar purlin has a stop-splayed scarf with square butts. A stack was inserted into the upper end of the hall in the early 16th century, replacing a timber flue, and features back-to-back fireplaces on the ground floor. An inserted ceiling from the same date has chamfered joists. The parlour has a late 17th century ceiling with a heavy beam featuring nicked ogee stop-chamfers and small square joists. The service partition is largely reconstructed. A two-centre arched doorway to the rear retains one original blade. Joists in the service end are mostly mid-20th century replacements from a house in Colchester, decorated with stencilled quatrefoils and Tudor roses. A solid-tread stair at the service end was also brought from elsewhere.

Local climate

The Mercant House sits in one of the driest parts of the UK, with an average of 680 mm of rain a year. This makes it drier than 99% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 83% of listed buildings.

It experiences an average of 27 freeze-thaw cycles a year, fewer than 71% 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 — 2 transactions since 1995
  • No related consent applications matched
  • 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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