Oxford Archaeology (OA) has carried out a programme of investigation and recording at Weir House in Guildford, Surrey, a Grade II Listed Building owned by the National Trust and situated in a Conservation Area. The house is in good condition and currently inhabited by tenants. The work is in advance of any possible changes that may be proposed in the future so that informed conservation recommendations can be made for practical and effective management that will not compromise the buildings special features and overall historic value.

Historic building recording and watching brief by West Sussex Archaeology identified the main building on the site as a four-bay threshing barn with a later open-fronted shelter abutted to its north-west corner. On cartographic evidence and construction style, the barn is of late 18th century date and may have been constructed in 1796, as evidenced by the carved date on a greensand block in its southern plinth wall.

Historic building assessment by M Higgins of SCC of an ‘architecturally polite’ house with rendered facades, end-elevation bow bay windows and a slate roof behind a parapet. The core may be a late 17th century house with a large gable fireplace. In 1785 symmetrical end wings were added, the outshot raised to two storeys, the front elevation unified and the interior remodelled.

Historic building assessment by M Higgins of SCC of Church House, formerly Church Cottages or Church House and Cottage. A ‘polite’ brick building of early 18th century date, its double-pile, double-fronted form has a high degree of reflective symmetry suggesting two, near identical, back-to-back houses, but it may be that the back house was originally servants’ accommodation.

Historic building assessment by M Higgins of SCC of a probable late 15th century, open-hall house of three bays, of which just one was open. It includes an overshot cross-entry with speres (to exclude draughts) and a moulded upper end dais beam and decorated head to the parlour door spere. An added chimney preserved the cross-entry and a rear range was added in the 18th century.

Evaluation by I Howell of MOLA revealed two 18th or 19th century pits of unknown function.

Evaluation by H Knight of MOLA revealed natural sands and gravels largely truncated by 20th century development. The only archaeological feature, along the northern edge of the site, was a roadside ditch, cut by a later, wider ditch containing 18th–19th century roof tile.