Certificate of Lawfulness Granted by Hounslow for a Residential Dwelling
Certificate of Lawfulness secured for an existing dwelling use in the London Borough of Hounslow, averting enforcement action by demonstrating four years of continuous residential occupation of a rear outbuilding.
PLANNING APPROVALSHOUNSLOWLONDON
Andrew Ransome
6/12/20262 min read
In 2015, the London Borough of Hounslow issued a Certificate of Lawfulness confirming the lawful use of a rear outbuilding as a single dwelling, following intervention by a planning consultant.
The application averted potential enforcement action by demonstrating that the residential use had continued for more than four years without challenge, exceeding the threshold after which the Council could no longer act.
Certificate of Lawfulness in Hounslow
The London Borough of Hounslow's planning enforcement team had begun to take an interest in a residential outbuilding on a client's property — a structure that had been constructed more than ten years earlier and had been continuously let as a dwelling for over four years.
Facing the prospect of enforcement action, the client needed a proactive and evidence-led response.
A Certificate of Lawfulness of Existing Use or Development (CLEUD) is the appropriate legal mechanism for regularising a use in these circumstances.
For the change of use of a building to a single dwelling house, the enforcement time limit is four years — meaning that once a use has continued for that period without enforcement action being taken, it becomes immune from enforcement and the Council is obliged to issue a Certificate if the evidence is sufficient.
The standard of proof required for a CLEUD is the balance of probability. A comprehensive evidence package was assembled including sworn statutory declarations, council records and utility bills, accompanied by a legal commentary that guided the case officer through the evidence and addressed any gaps in the record.
Relevant case law was identified and cited, which made clear that if the local planning authority has no evidence to contradict the applicant's account, there is no valid basis for refusal.
The London Borough of Hounslow concluded that the evidence demonstrated continuous residential occupation for more than four years and issued the Certificate on time and within budget, resolving the enforcement risk entirely.
Planning Application Advice
If your property has attracted the attention of a planning enforcement team, or if you wish to establish the lawful status of an existing use, I can advise on whether a Certificate of Lawfulness is the right route and manage the application from start to finish. Contact me to discuss your situation.
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.
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Get in touch for planning advice: Email: andrew@andrewransome.co.uk
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