Frogmore House is a Grade II listed building in the St Albans local planning authority area, England. First listed on 27 August 1971. House. 2 related planning applications.

Frogmore House

WRENN ID
white-banister-yarrow
Grade
II
Local Planning Authority
St Albans
Constituency
St Albans MP: Daisy Cooper (LD)
Country
England
Date first listed
27 August 1971
Type
House
Address
Frogmore House, St. Stephen, AL2 2LL
OS grid reference
TL 150 035
Coordinates
51.71927, -0.33625
Source
Historic England listing

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

Description

Frogmore House is a main house dating from 1725, and re-fronted in the earlier 19th century. It is a two-storey building with three windows, constructed from painted brick and topped with a parapet and a slate mansard roof. The recessed sash windows have glazing bars and margin lights, each set within a gauged, flat brick arch. A modified Doric porch, enclosed and with flat pilasters, is present. A rainwater head featuring a lion mask and the date "1725" is located on the north return. A one-storey, one-window link connects the main house to a north wing, also of two storeys and two windows. This link has a slate mansard roof with a dormer behind the parapet and a recessed sash window with glazing bars. This link and the wing are of painted brick, dating from the early 19th century and featuring a low-pitched slate roof and wide, two-light recessed sash windows with glazing bars. A single sash window is present at the right of the wing, above a passage to the rear. A three-storey, three-window south section, also of painted brick with a parapet and low-pitched hipped slate roof, dates from the early 19th century and features gauged, flat brick arches to recessed sash windows with glazing bars. A two-storey, one-window link, also from the early 19th century, connects this section to the main house. It has narrow windows; the upper one is plain glass, and the lower one has margin lights and diagonal bars. The Garden Cottage and Frogmore House form a group.

Local climate

Frogmore House sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 89% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 87% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 61% of listed buildings. Of these, 15 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 7 transactions since 1999
  • Related listed building consents — 2 applications
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • 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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Nearby listed buildings

  1. Garden Cottage Grade II 6 m
  2. Garden Wall to Frogmore House Grade II 59 m
  3. 90 and 92, Park Street Grade II 134 m
  4. Lych Gate Immediately South West of Church of Holy Trinity Grade II 277 m
  5. Church of the Holy Trinity Grade II 280 m
  6. The White Horse Public House Grade II 296 m
  7. 84, Park Street Grade II 341 m
  8. 82, Park Street Grade II 347 m
  9. 68, Park Street Grade II 408 m
  10. Water Mill at Corner of Bury Dell Lane Grade II 414 m