Marconis
MARCONIS, NEW STREET
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1031538
- Date first listed:
- 21-Nov-1997
- List Entry Name:
- Marconis
- Statutory Address:
- MARCONIS, NEW STREET
Location
Location of this list entry and nearby places that are also listed. Use our map search to find more listed places.
Use of this mapping is subject to terms and conditions .
This map is for quick reference purposes only and may not be to scale.
What is the National Heritage List for England?
The National Heritage List for England is a unique register of our country's most significant historic buildings and sites. The places on the list are protected by law and most are not open to the public.
The list includes:
 |
Buildings |
 |
Scheduled monuments |
 |
Parks and gardens |
 |
Battlefields |
 |
Shipwrecks |
Images of England Project
- Date:
- 2004-11-30
- Reference:
- IOE01/13003/05
- Rights:
- © Mr G.W. Garthwaite. Source: Historic England Archive
Local Heritage Hub
Unlock and explore hidden histories, aerial photography, and listed buildings and places for every county, district, city and major town across England.
Discover moreOfficial list entry
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1031538
- Date first listed:
- 21-Nov-1997
- List Entry Name:
- Marconis
- Statutory Address 1:
- MARCONIS, NEW 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:
- MARCONIS, NEW STREET
The building or site itself may lie within the boundary of more than one authority.
- County:
- Essex
- District:
- Chelmsford (District Authority)
- Parish:
- Non Civil Parish
- National Grid Reference:
- TL 70892 07337
Details
CHELMSFORD
TL7007SE NEW STREET
926/1/10010 Marconi's
II
Offices and laboratory, now offices. 1912 by W Dunn and R Watson. Brown brick with limestone dressings and red clay tile window heads. Hipped slate roof with four brick ridge stacks with stone banding. Edwardian Baroque style. Two storeys; 3:5:1:5:3 fenestration with slightly projecting central bay and projecting side wings. There is a central domed clock turret with weathervane. Central bay has open pediment set over pilasters with stone banding set on balcony with wrought iron balustrade and ground floor with panelled double doors. First floor has cartouche over 36-pane sash set in Gibbs surround. Flat red brick arches over sashes with glazing bars; dentilled stone cornice; stone banding to quoins and wings. Similar 6 bay side elevations. Attached low brick wall with painted railings and opposite the entrance brick gate piers surmounted by iron lamp holders.
INTERIOR: Fine bolection-panelled entrance hall, with decorative wrought-iron balustrade to cantilevered staircase, modillioned cornice and Baroquye-style plasterwork to ceiling. Half-glazed doors from hall to rear passages which give access via semi-circular arched screens to offices with plaster cornices.
HISTORY: The world's first purpose-built radio factory. This building also housed the laboratory where Marconi carried out his development work.
[W J Baker, "A History of the Marconi Company"1970.]
Listing NGR: TL7089207337
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 468977
- Legacy System:
- LBS
Sources
Books and journals
Baker, W J, A History of the Marconi Company, (1970)
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 20-Jun-2026 at 18:52:19.
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.