Grendon Hall

Grendon Hall is a country house, now serving as a county youth centre, that dates from the late 16th century and was extended in the late 17th to early 18th century for General Hatton Compton, likely by John Lumley of Northampton. The building is constructed of limestone ashlar and regular coursed limestone, with slate roofs laid to diminishing courses, and has an L-shaped plan. It stands two storeys high with an attic and features a main front consisting of a seven-window range.

The central entrance has an early 20th-century part-glazed door with a moulded stone surround and a segmental pediment above it. The 24-paned sash windows are framed by moulded stone architraves. The two outer bays on the left and right project slightly forward, with one blank window on the inside return walls. A dentilled wood cornice runs along the top, and the hipped roof is adorned with ashlar stacks at the ridge.

To the left, the garden front mirrors the main front with a four-window range, while the far left bay was added in the early 20th century. The entrance front to the right of the main front is a late 16th-century seven-window range featuring irregularly spaced three- and six-light stone-mullioned windows, some of which have transoms and leaded lights, though those on the far left are blocked. An early 20th-century entrance is located to the right. The roof includes five dormers with pediments and leaded diamond panes. The rear elevation has some early 20th-century extensions designed in a Tudor style.

Inside, the entrance hall showcases early 18th-century fielded panelling and an early 20th-century staircase designed in the 18th-century style. The drawing room to the left of the entrance features 17th-century panelling, while the dining room in the centre of the main front and the common room (originally two rooms) to the left both have 18th-century fielded panelling and fireplaces with bolection moulded surrounds. The fireplace in the common room is made of local Raunds marble. An 18th-century staircase with a quarter landing and barley twist balustrade includes a fielded panelled dado. The first-floor rooms on the main front all feature 18th-century fielded panelling and bolection moulded fireplace surrounds, with some 17th-century panelling found in the first-floor rooms at the rear of the entrance front.