Certain |
Possible |
Questionable Doubtful |
Rejected |
|
Confidence is a statement of the site as a medieval fortification or palace |
| Name | Alternative Name(s) | Type | Remains | Akenham | Whitton; The Island | Timber Castle | Earthworks | Aldeburgh; The Mount | Fort Green | Artillery Fort | Nothing visible | Bacton manor of the bishop of Norfolk | Palace Fortified Manor House |
Earthworks | Belstead Hall | Fortified Manor House | Masonry ruins/remnants | Benhall Moat | Fortified Manor House | Earthworks | Bramfield Castle Yard | Timber Castle | Earthworks |
| Bungay Castle | Bungeye | Masonry Castle | Masonry ruins/remnants |
| Bungay Town Defence | Urban Defence | Nothing visible | Burgate | Timber Castle | Earthworks |
| Burgh Castle | Timber Castle Masonry Castle |
Masonry ruins/remnants | |
| Burgh Castle Field | Timber Castle | Earthworks | Bury St Edmunds Abbey | Fortified Ecclesiastical site | Major |
| Bury St Edmunds Castle | Timber Castle | Uncertain | |
| Bury St Edmunds Town Defences | Urban Defence | Nothing visible | |
| Cavendish | Colt's Hall | Timber Castle | Uncertain | Chevington Hall | Fortified Manor House | Earthworks |
| Clare Castle | Timber Castle Masonry Castle |
Masonry footings | Clare Town Defences | Hawedych | Urban Defence | Cropmarks/slight earthworks | Claydon Hall | Timber Castle Fortified Manor House |
Earthworks | Cockfield | Cuckfield | Timber Castle | Nothing visible | Columbyne Hall | Columbine Hall | Fortified Manor House | Major |
| Combs, Jacks Grove | Timber Castle | Earthworks | |
| Creeting St Peter | Roydon Hall | Timber Castle | Earthworks |
| Denham Castle | Castle Holes | Timber Castle | Earthworks | Dunwich Castle | Dunewico | Timber Castle | Nothing visible | Dunwich Port Defences | Artillery Fort | Nothing visible | Dunwich Town Defences | Pales Dyke | Urban Defence | Cropmarks/slight earthworks |
| Eye Castle | Eay | Timber Castle Masonry Castle |
Masonry footings | Fakenham Magna | Timber Castle | Earthworks |
| Felixstowe Langer Point | Felixstow; Lunger; Landguard Fort; Langerside | Artillery Fort | Nothing visible |
| Felixstowe Langer Rood | Felixstow; Lunger; Walton Ferry | Artillery Fort | Nothing visible | Finningham Cromwells Plantation | Timber Castle | Earthworks |
| Framlingham Castle | Fremingham | Timber Castle Masonry Castle |
Major | Framlingham Town Defences | Urban Defence | Cropmarks/slight earthworks |
| Freckenham Castle | Timber Castle | Earthworks | Gedding Hall | Foxburrow Hill | Fortified Manor House | Masonry ruins/remnants |
| Gipping Hill Farm | Timber Castle | Nothing visible | Gisleham Manor House | Fortified Manor House | Earthworks |
| Great Ashfield Castle Hill | Parkers Wood | Timber Castle | Earthworks |
| Great Cornard | Timber Castle | Earthworks | Great Finborough Devils Hill | Timber Castle | Earthworks |
| Groton Pitches Mount | Pytches Mount | Timber Castle | Earthworks | Harkstead | Herkestede | Fortified Manor House | Nothing visible |
| Haughley Castle | Haganet; Hawghlee; Hegenoth | Timber Castle Masonry Castle |
Earthworks |
| Haverhill Castle | Fortified Manor House | Nothing visible | Hawstead Hall | Hansted; Hausted; Hausteede | Fortified Manor House | Earthworks | Hoxne manor of the bishop of Norfolk | Palace Fortified Manor House |
Earthworks | Hunston Mill Hill | Timber Castle | Earthworks | Huntingfield | Timber Castle | Earthworks | Huntingfield Old Hall | Huntyngfeld | Fortified Manor House | Masonry footings |
| Ilketshall St John; The Mount | St John Ilketshall | Timber Castle | Earthworks | Ipswich Castle | Timber Castle | Nothing visible |
| Ipswich Castle Hill | Timber Castle Siege Work |
Nothing visible | Ipswich Cox Lane | Fortified Manor House | Nothing visible | Ipswich Shire Hall Yard | Urban Defence Fortified Manor House |
Nothing visible |
| Ipswich Town Wall | Gippewico | Urban Defence | Cropmarks/slight earthworks | Kessingland Coastal Battery | Artillery Fort | Earthworks |
| Kirkley Coastal Battery | Artillery Fort | Nothing visible | Letheringham Hall | Old Hall | Fortified Manor House | Uncertain |
| Lidgate Castle | Timber Castle Masonry Castle |
Masonry footings | |
| Lindsey; The Mounts | Leleshay | Timber Castle | Earthworks | Little Wenham Hall | Wenham Castle | Fortified Manor House | Masonry ruins/remnants |
| Lowestoft Coastal Batteries | Lestoffe | Artillery Fort | Nothing visible |
| Mettingham Castle | Fortified Manor House | Masonry ruins/remnants | |
| Milden Castle | Foxburrow Hill | Timber Castle | Earthworks |
| Mildenhall | Masonry Castle | Uncertain | Minsmere | Artillery Fort | Nothing visible | Nayland Court Knoll | Timber Castle | Earthworks |
| Norton, Little Haugh Hill | Timber Castle | Earthworks | Offton Castle | Timber Castle | Uncertain | Onhowshalle | Onehousehall | Fortified Manor House | Earthworks |
| Orford Castle | Oreford | Masonry Castle | Major |
| Otley; The Mount | Otley Barrow | Timber Castle | Earthworks |
| Ousden | Timber Castle | Nothing visible | Pakefield Coastal Battery | Artillery Fort | Earthworks | Parham Moat Hall | Fortified Manor House | Earthworks | Pond Hall | Le Ponde | Fortified Manor House | Uncertain | Redisham Mill Mount | Timber Castle | Cropmarks/slight earthworks | Rougham | Timber Castle | Earthworks | Smallbridge Hall | Smallbrigg; Seinte Marie Bures | Fortified Manor House | Cropmarks/slight earthworks | South Cove; The Mound | Frostenden | Timber Castle | Earthworks | South Elmham Hall | Bishops Palace | Fortified Manor House Palace |
Masonry ruins/remnants | Southwold Castle | Southwaude | Fortified Manor House Uncertain |
Nothing visible |
| Southwold Gun Hill | Hiham Bulwark | Artillery Fort Linear Defence or Dyke |
Nothing visible |
| Southwold Town Defences | Suwald | Urban Defence | Nothing visible | Sternfield | Sternefeld | Fortified Manor House | Nothing visible | Stonehall Manor, Moulton | Melton | Fortified Manor House | Nothing visible |
| Sudbury Town Defences | Urban Defence | Nothing visible | Sutton, Bussock Woods | Timber Castle | Earthworks | Troston Mount, Honington | Timber Castle | Earthworks | Walton Castle | Masonry Castle Timber Castle |
Nothing visible |
| Wantisden Cumberlands Mount | Staverton Park | Timber Castle | Earthworks | West Stow Hall | Fortified Manor House | Masonry ruins/remnants | Westleton Heath | Siege Work | Cropmarks/slight earthworks |
| Wingfield Castle | Masonry Castle Fortified Manor House |
Major | |
| Wissington Grange Wood | Timber Castle | Earthworks | Wykes by Ipswich manor of the Bishop of Norfolk | Wykes Bishop; Bishop Wycks | Palace Fortified Manor House |
Nothing visible | Yoxford | Fortified Manor House | Uncertain |