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Former Marconi Works New Street Chelmsford

12/01789/MOD106Approved

Approved on 16 October 2026

Approximate location: the centre of the postcode, not the exact property.

Proposal

Modification of s106 agreement attached to permission reference 12/01789/FUL to permit a change of use from community use (Class F) to professional office space (Class E).

Received
13 July 2026
Public comments
0 · last counted 3 November 2026
  1. Received13 Jul
  2. Validated
  3. Consult.
  4. Target12 Oct
  5. Decided16 Oct

Decided in 95 days

About this application

This is a planning application for a change of use at Former Marconi Works New Street Chelmsford. Chelmsford has handled 5,276 applications of this type. This one was decided in 95 days, 7 weeks longer than Chelmsford's typical decision time. The site is in 3 listed buildings nearby. There are no previous applications recorded at this address. We hold 2,984 applications in total for the CM3 postcode area.

Application details

Postcode
CM3 1BA
Scale / size
Medium

Planning application dates

Validated
13 July 2026
Target decision date
12 October 2026

Planning decision

Statutory period
91 days

Additional information

Documents
1

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

  • Flood zone 1: Low probability (rivers and sea)

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (23)

flood storage areas, conservation areas, listed buildings, Article 4 directions, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Chelmsford

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