Portchester Castle
PORTCHESTER CASTLE, CASTLE STREET
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed Building
- Grade:
- I
- List Entry Number:
- 1229190
- Date first listed:
- 18-Oct-1955
- List Entry Name:
- Portchester Castle
- Statutory Address:
- PORTCHESTER CASTLE, CASTLE STREET
Location
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Images of England Project
- Date:
- 2000-04-17
- Reference:
- IOE01/02227/23
- Rights:
- © Dr M.G. Askew. Source: Historic England Archive
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Official list entry
- Heritage Category:
- Listed Building
- Grade:
- I
- List Entry Number:
- 1229190
- Date first listed:
- 18-Oct-1955
- List Entry Name:
- Portchester Castle
- Statutory Address 1:
- PORTCHESTER CASTLE, CASTLE STREET
The scope of legal protection for listed buildings
This List entry helps identify the building designated at this address for its special architectural or historic interest.
Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.
For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.
The scope of legal protection for listed buildings
This List entry helps identify the building designated at this address for its special architectural or historic interest.
Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.
For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.
Location
- Statutory Address:
- PORTCHESTER CASTLE, CASTLE STREET
The building or site itself may lie within the boundary of more than one authority.
- County:
- Hampshire
- District:
- Fareham (District Authority)
- Parish:
- Non Civil Parish
- National Grid Reference:
- SU 62411 04667
Details
CASTLE STREET 1. 5231 (South End) Portchester Portchester Castle SU 6204 11/203 18.10.55.
I GV
2. A Scheduled A.M, in the care of the Department of the Environment. The main walls are those of the Roman fort Portus Adurni built in the late C3 or early C4. They form a square 200 yds wide and enclose between 8 and 9 acres. They are of flints with bonding courses of brick or stone, but have been substantially repaired in the mediaeval period. Originally there were hollow semi-circular bastions in the angles and 4 on each side. Of these 20 bastions, 14 survive. The entrances were in the centre of the west and east sides, but the gateways now standing are both mediaeval. Of the west or land gate, the lower storey is C12, ashlar, with a 3-centred archway and originally stone vaulting to the roof but this has mostly fallen away. The upper portion is C14, stone rubble, and has 1 window containing 2 tiers of 3 lights on the inner side and 2 corbel heads above the cornice. The east or watergate is a shell divided into 2 sections with an archway between. It is faced with ashlar. The outer portion is C14 and has a portcullis groove to the archway. The inner portion is older and has a circular turret staircase in the south west corner. In the north west corner of the Roman fort a mediaeval castle was built in the reign of Henry II with a massive keep in the angle of the Roman walls, which were cut away by a surrounding wall on the east and south sides forming an inner bailey with a projecting tower in the south east corner and a gateway in the south wall with a moat to the south and east filled with water at high tide by a sluice in the Roman wall. The keep, which projects beyond the Roman walls, is intact. It is 40 ft square and the walls are 8 ft thick. The 3 original storeys were built about 1160 and the 4th storey added in the early C13. The remaining buildings are now ruined. Those along the west and south walls of the inner bailey and Assheton's Tower in the north west corner were erected in the C14 and those to the south of the latter along the west wall in the C17. Photographs in the N.M.R. and article in Country Life, Volume 75. Portchester Castle forms a group with St Mary's Church, the Churchyard walls, the lamp in the Churchyard and the lychgate.
Listing NGR: SU6222404655
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 141469
- Legacy System:
- LBS
Sources
Books and journals
Country Life in Country Life, Vol. 75, ()
Legal
This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.
Map
This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 12-Jun-2026 at 17:39:23.
Download a full scale map (PDF)End of official list entry
All text content is available under the Open Government Licence v3.0 , except where otherwise stated. Any supplied maps are © Crown Copyright [and database rights] 2026 OS AC0000815036 and may not be reproduced without permission.