Colchester Approves Granny Annexe Within the Curtilage of a Listed Building
Planning permission and listed building consent from Colchester City Council for a detached granny annexe within the curtilage of a listed building at West Mersea, overcoming the Council's initial concern that the annexe constituted a new dwelling.
PLANNING APPROVALSCOLCHESTERESSEX
Andrew Ransome
7/13/20262 min read
In 2021, Colchester City Council granted planning permission and listed building consent for the demolition of an existing garage and erection of a detached granny annexe within the curtilage of a listed building at West Mersea.
The Council initially resisted the proposal on the grounds that the annexe amounted to a new independent dwelling — an approach I was able to demonstrate was contrary to case law and national planning policy.
Granny Annexe Approved Planning Permission in Colchester
In 2021, I secured planning permission and listed building consent from Colchester City Council for the demolition of an existing garage building and the erection of a granny annexe in its place, within the curtilage of a listed building at West Mersea.
Local planning authorities frequently resist granny annexe proposals on the basis that the accommodation amounts to an independent new dwelling — particularly when the annexe is detached, has its own access, or contains a kitchen and bathroom.
This resistance is often unsound. It runs contrary to case law and to the national policies and government strategies that specifically encourage multi-generational living and the provision of support for older people in retirement.
I put forward a robust case demonstrating that the proposed annexe, despite being detached and self-contained, would remain ancillary to and functionally dependent on the main listed dwelling.
The critical distinction between an ancillary annexe and an independent dwelling lies in the relationship between the two — and in this case, the functional link was clear.
The Council approved planning permission for the proposed granny annexe.
Planning Application Advice
If you are considering a granny annexe and have been told it would constitute a new dwelling, I can advise on whether that view is legally sound. Contact me to discuss your project.
Andrew Ransome MRTPI - Email: andrew@andrewransome.co.uk
About me
Andrew Ransome is a Planning Director and a Chartered Member of the Royal Town Planning Institute (RTPI), with more than two decades of experience in town planning.
He specialises in delivering strategic planning solutions for complex developments across both rural and urban environments, helping clients navigate planning challenges and unlock development opportunities. Connect with Andrew on Linkedin.
Planning Successes in Colchester
Planning Application Information
Get in touch for planning advice: Email: andrew@andrewransome.co.uk
© 2026. All rights reserved.