Hydraulics Research Limited is a Grade II listed building in the South Oxfordshire local planning authority area, England. First listed on 16 August 1985. Office. 1 related planning application.

Hydraulics Research Limited

WRENN ID
salt-gravel-tallow
Grade
II
Local Planning Authority
South Oxfordshire
Constituency
Henley and Thame MP: Freddie van Mierlo (LD)
Country
England
Date first listed
16 August 1985
Type
Office
Address
Hydraulics Research Limited, Benson Lane, Crowmarsh, OX10 8BA
OS grid reference
SU 615 900
Coordinates
51.60635, -1.11285
Source
Historic England listing

Also on this page: EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Hydraulics Research Limited is a house that has been converted into offices, built around 1850. It features a stone base with red brick and Bath stone dressings, topped by a complex slate roof and various brick stacks. The building is designed in an Elizabethan style and has two storeys plus an attic, with a five-window range arranged in a 1:3:1 pattern, including a three-bay centre flanked by one-bay cross-wings.

The front includes a stone arcaded glazed loggia supported by Doric pilasters, with a central half-glazed double door and a round overlight. To the right cross-wing, there is a cross window, and the centre of the first floor has three cross windows. The right cross-wing features a five-light stone mullion and transom window on both sides. A pierced stone balustrade adorns the centre roof, which has shaped gables on the cross-wings. An octagonal tower with an ogee lead roof is located to the right.

At the rear, the building also has two storeys and an attic with a five-window range. The centre has three French doors, and there are two-storey bay windows on the left and right, featuring stone mullion and transom windows. The first floor centre has three cross-windows, and the central roof and flat tops of the bay windows are accented with a pierced stone balustrade. The design includes shaped gables on both ends, and there are two dormers in the centre. A two-storey, three-window wing on the left has a five-window arcade on the ground floor.

Inside, there is a double-height hall with a glazed leaded screen leading to the lobby and a decorative encaustic tile floor. A balcony on the first floor has a panelled front in Jacobean style, with cupid herms on the uprights of the panels. The ornate plaster panelled ceiling features brackets to the cove. The Enquiry Room and Library, likely former drawing rooms, are both panelled in French Rococo style. The lecture room on the left, probably a former dining room, is panelled in oak in Jacobean style. The staircase to the right is an open well cantilever staircase with a wrought and cast iron balustrade and a wooden handrail, featuring a coffered ceiling with a central hinged figure in an oval panel.

Local climate

Hydraulics Research Limited sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 82% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 75% of listed buildings.

It experiences an average of 37 freeze-thaw cycles a year, more than 65% of listed buildings. Of these, 16 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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  • 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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