Grade I listed · Fareham

Portchester Castle

Portchester Castle is a Grade I listed building in Fareham, first listed on 18 October 1955. It is one of 4 Grade I entries among 435 listed buildings in Fareham; 0% of Fareham’s current entries were listed before it.

List entry
FieldValue
NamePortchester Castle
GradeGrade I — exceptional interest
List entry number1229190
Date first listed18 October 1955
Local planning authorityFareham
Location50.83816, -1.11502 (map)
Official recordHistoric England list entry 1229190

Planning works on this listed building?

Planium checks which consents Fareham will require for your works on Portchester Castle, lists what the heritage statement must cover and drafts the application text.

What the grade means for works

Grade I buildings are of exceptional interest — only about 2.5% of listed buildings in England. Any application for listed building consent is notified to Historic England, and alterations are scrutinised closely.

The protection covers the whole building, inside and out, plus fixtures and attached structures. Typical works that need consent: replacing windows or doors, removing walls or historic fabric, changing roof coverings, installing solar panels or external insulation, and adding extensions.

Listed buildings near Portchester Castle

Frequently asked questions

Is Portchester Castle listed?
Yes. Portchester Castle is on the National Heritage List for England as a Grade I listed building, list entry number 1229190, first listed on 18 October 1955. The full list entry with its description and map is on Historic England’s website.
Do I need consent for works to Portchester Castle?
Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Fareham, in addition to any planning permission or building regulations approval. Like-for-like repairs often do not, but confirm with the council’s conservation officer before you start.
Source: National Heritage List for England, © Historic England 2026, via planning.data.gov.uk. Contains Ordnance Survey data © Crown copyright and database right. Licensed under the Open Government Licence v3.0. Retrieved 12 October 2026. Local authority assigned from the list entry point. This page is a summary — the legal record is the official list entry.