18 Mill Street Cambridge Cambridgeshire CB1 2HP
Refused on 20 February 2024
Council decision: Refused PermissionDelegated (officer decision)
Boundary © HM Land Registry, © Ordnance Survey · details
This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.
Proposal
Replacement part single storey, part two storey rear extension, roof extension with rear facing dormer window.
- Received
- 9 January 2023
- Decision level
- Delegated (officer decision)
- Council
- Cambridge City Council
- Ward
- Petersfield
- Agent
- Saunders Boston Architects
- ReceivedReceived9 Jan
- ValidatedValidated11 Jan
- Consult.Consultation7 Feb
- TargetTarget Date8 Mar
- DecidedDecided20 Feb
Decided in 405 days (council typically 49)
About this application
This is a full planning application for a two storey rear extension at 18 Mill Street Cambridge Cambridgeshire CB1 2HP. Cambridge has handled 1,534 applications of this type. This one was decided in 407 days, 51 weeks longer than Cambridge's typical decision time. The site is in the Mill Road conservation area. There are no previous applications recorded at this address. In the past year there have been 156 applications across Petersfield. We hold 1,406 applications in total for the CB1 postcode area.
90% of full applications at Cambridge City Council were approved. Across all application types, the council typically decides in about 7 weeks (median).
Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street
Application details
- Postcode
- CB1 2HP
- Application type
- Householder Works/Extension
- Scale / size
- Small
- District
- Cambridge City Council
Planning application dates
- Date validated
- 11 January 2023
- Consultation expiry
- 15 February 2023
- Neighbour consultation end
- 7 February 2023
- Last date for comments
- 28 February 2023
- Target decision date
- 8 March 2023
Applicant and agent
- Agent
- Saunders Boston Architects
- Agent address
- Eastern Gate House 119 Newmarket Road Cambridge CB5 8HA
Planning decision
- Statutory period
- 56 days
Publicity
- Last advertised
- 25 January 2023
- Advertisement expiry
- 15 February 2023
- Site notice start
- 7 February 2023
Additional information
- Documents
- 26
- Constraints
- 12
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Mill Road
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (23)
flood storage areas, listed buildings, Article 4 directions, tree preservation orders, 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: Cambridge
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Around this site
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For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Complete Electrical Solutions (East Anglia) LtdCommercial & industrial electrical installationsElectrical Installations within Dwellings (Part P)0.3 mi
- Cambridge Eco Build & ElectricalElectrician0.4 mi
- D Holt Electrical ServicesElectrician0.5 mi
- O'Sullivan Shopfitting LtdCommercial & industrial electrical installationsElectrical Installations within Dwellings (Part P)0.6 mi
Planning something similar?
See what the council approved and refused for two-storey and first-floor extensions on your street. Pick your home and get the evidence before you pay for drawings.