The Baas is a Grade II* listed building in the Broxbourne local planning authority area, England. A Medieval House.

The Baas

WRENN ID
pitched-obsidian-moth
Grade
II*
Local Planning Authority
Broxbourne
Constituency
Broxbourne MP: Lewis Cocking (Con)
Country
England
Type
House
Period
Medieval
Address
The Baas, Baas Hill
OS grid reference
TL 355 065
Coordinates
51.74148, -0.03769
Source
Historic England listing

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

Description

The Baas is a building dating from the late 15th century, with alterations made in the late 17th century and the 19th century. The eastern half of the structure is constructed of red brick, while the western half is weatherboarded. It features an old tile hipped roof and a chimney stack with square and diagonal set shafts.

The eastern half is two storeys high and has two pairs of 15th-century chamfered pointed lights on the first floor of the eastern elevation, with modern copies on the ground floor. The northern elevation includes a 17th-century oak-panelled door set in a segmental arch with sunken spandrels, topped by a shell hood supported on leaf consoles. Both the ground and first floors have mullioned and transomed casements.

The western half of the building is three storeys tall and has a single window, primarily fitted with modern leaded casements. At the rear center of the house, there is a modern conservatory that incorporates late 18th-century fluted columns and a doorcase with a scroll pediment.

Local climate

The Baas sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 97% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 98% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 63% 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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