St. John's is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 4 September 1973. A Georgian House. 1 related planning application.
St. John's
- WRENN ID
- heavy-shingle-oak
- Grade
- II
- Local Planning Authority
- Monmouthshire
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 4 September 1973
- Type
- House
- Period
- Georgian
- Address
- St. John's, 11 Glendower Street, Monmouth, NP25 3DG
- OS grid reference
- SO 508 127
- Coordinates
- 51.81112, -2.71457
- Source
- Cadw listing
Description
The property comprises two adjoining buildings, St. John’s and No. 11, which present as a single structure from the street. The buildings appear to be of similar construction and share the same ownership. An early 19th-century house was added to the garden side, completely obscuring the older part of the building from the south. The front elevation is rendered to resemble ashlar, with a horizontal band separating the floors, and has a Welsh slate roof. The buildings are two storeys high, with three window bays in total.
The western two bays, forming St. John’s, have a slightly higher roofline. A prominent, open-pedimented doorway is on the left side, featuring fluted columns, a transom light, and a six-panel door. A tripartite sash window with 6 over 6 panes is to the right. Above the doorway is a 3 over 6 pane sash, and to the right is a paired 3 over 6 sash window. The roof is steeply pitched and incorporates a flat-topped dormer with a 2 + 2 casement window.
The eastern bay, No. 11, has a plain doorway on the right side with a six-panel door and glazed transom light. It features late 20th-century three-light casement windows with 6 + 6 + 6 panes on each floor. A steeply pitched roof with a rendered stack is present between the two sections.
The rear elevation reveals an early 19th-century house, single-depth and backing onto the older street range. This section is rendered and painted, likely over brick, with a Welsh slate roof, and is three storeys high with three windows. The ground floor has three tall French doors with 4 + 4 panes and a transom light above, and a glazed roof verandah supported by Coalbrookdale ironwork and wrought iron filigree piers. The first floor has six over 6 pane sashes, a plat band, and 3 over 6 sashes above. A tall rendered stack is located on the right-hand wall.
The interior of the front range was significantly altered in the early 19th century when a staircase was inserted, creating a confusing stairhall. The multi-flight staircase is constructed of pine with a closed string and turned balusters. The rooms are plain, but the westernmost room on the first floor has chamfered cross beams with ogee stops. Otherwise, the joinery is early 19th century, with six-panel doors. The garden building, thought to date from around 1820, includes a Dining Room currently undergoing restoration. This room features a white marble fireplace flanked by elliptically headed alcoves with imposts and keyblocks, along with contemporary shutters, joinery, and plaster cornices. The interior of No. 11 is said to retain further evidence of 17th-century origins.
Local climate
St. John's receives an average of 820 mm of rain a year. This makes it wetter than 52% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 57% of listed buildings.
It experiences an average of 42 freeze-thaw cycles a year, more than 80% of listed buildings. Of these, 19 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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- No EPC on record for this property
- Sale history — 2 transactions since 2013
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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