Grade I listed · Dacorum

Church of Saint Mary

Church of Saint Mary is a Grade I listed building in Dacorum, first listed on 29 July 1950. It is one of 12 Grade I entries among 911 listed buildings in Dacorum; 2% of Dacorum’s current entries were listed before it.

List entry
Field	Value
Name	Church of Saint Mary
Grade	Grade I — exceptional interest
List entry number	1348470
Date first listed	29 July 1950
Local planning authority	Dacorum
Location	51.76971, -0.58926 (map)
Official record	Historic England list entry 1348470

Planning works on this listed building?

Planium checks which consents Dacorum will require for your works on Church of Saint Mary, 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 Church of Saint Mary

Name	Grade	Distance
Gravestone of Peter the Wild Boy	II	18 m
Northchurch War Memorial and former plinth 5m to south-west	II	51 m
84-96 High Street	II*	59 m
Saint George and the Dragon Public House	II	68 m
79 High Street	II	98 m
69-73 High Street	II	126 m
Exhims	II	158 m
Rosemary Cottage	II	183 m
Edgeworth House	II*	636 m
Woodside Cottage	II	755 m

Frequently asked questions

Is Church of Saint Mary listed?

Yes. Church of Saint Mary is on the National Heritage List for England as a Grade I listed building, list entry number 1348470, first listed on 29 July 1950. The full list entry with its description and map is on Historic England’s website.

Do I need consent for works to Church of Saint Mary?

Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Dacorum, 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.