In May 2016 Archaeology South-East (a division of the Centre for Applied Archaeology, UCL) carried out a historic building record of Hophouse Barn, Hophouse Farm, Catsfield Stream, East Sussex (NGR 571443 113021). The work was commissioned by Michael D Hall Building Design Services Ltd to satisfy a condition placed on listed building consent (Planning ref: RR/2015/1125/L) in relation to the conversion of the barn to residential use. The record also includes a neighbouring stable and cattle shelter. A previous survey had been carried out by David Martin in 1980. The barn was constructed as a five-bay threshing barn in the early 18th century. It has undergone several phases of alteration, including the addition of down-going shores and associated partitions at some point in the 18th century, the conversion of two bays to use as a cow house in the 19th century, and small-scale alterations in the 20th century. A late 19th century building to the east of the barn was converted to use as a stable in the early 20th century, and at a similar date, an open-fronted cattle shelter was built to the west of the barn.