Grade I listed · Greenwich

Royal Observatory former Great Equatorial Building

Royal Observatory former Great Equatorial Building is a Grade I listed building in Greenwich, first listed on 8 June 1973. It is one of 28 Grade I entries among 539 listed buildings in Greenwich; 12% of Greenwich’s current entries were listed before it.

List entry
FieldValue
NameRoyal Observatory former Great Equatorial Building
GradeGrade I — exceptional interest
List entry number1078998
Date first listed8 June 1973
Local planning authorityGreenwich
Location51.47772, -0.00114 (map)
Official recordHistoric England list entry 1078998

Planning works on this listed building?

Planium checks which consents Greenwich will require for your works on Royal Observatory former Great Equatorial Building, lists what the heritage statement must cover and drafts the application text.

Ask Planium what consent you need

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 Royal Observatory former Great Equatorial Building

NameGradeDistance
Royal Observatory, The Transit HouseI20 m
Statue of General Wolfe, to East of Royal ObservatoryII26 m
Royal Observatory Wall and Clock to Right of Entrance GatesI35 m
Altazimuth Pavilion at the Royal ObservatoryII46 m
Royal Observatory Flamsteed HouseI64 m
Royal Observatory South BuildingII108 m
The Standard Reservoir Conduit House, Greenwich ParkII*281 m
Park HallII306 m
HillsideII310 m
Bandstand to South of Great Cross AvenueII313 m

Frequently asked questions

Is Royal Observatory former Great Equatorial Building listed?
Yes. Royal Observatory former Great Equatorial Building is on the National Heritage List for England as a Grade I listed building, list entry number 1078998, first listed on 8 June 1973. The full list entry with its description and map is on Historic England’s website.
Do I need consent for works to Royal Observatory former Great Equatorial Building?
Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Greenwich, 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.