Whether it’s a mobile annexe under the Caravan Act or a permanent structure needing full planning permission, Driffield projects of this scale benefit from a Lawful Development Certificate confirming the position in writing, not just an assumption.
Get Your Free Route CheckThe planning position for a Driffield annexe comes down to two questions, is it genuinely mobile within the Caravan Act’s size limits, and is it genuinely ancillary to the house rather than a separate, independent dwelling.
A structure meeting the caravan definition, movable by road, built in no more than two sections, within 20 metres by 6.8 metres by 3.05 metres internal height, can often be sited in a Driffield garden without full planning permission, provided it stays ancillary.
Where a Driffield annexe is permanently fixed, or genuinely self-contained with its own facilities used independently, the caravan and permitted development routes generally don’t apply, and a full application becomes the realistic path. A Driffield annexe needing full planning permission usually needs both, our Building Regulations drawings in Driffield service covers the technical compliance side, and our structural calculations in Driffield service covers the engineering detail.
Caravan Act, permitted development, or full planning
Movable structures that may need no permission at all
Permitted development limits checked properly
Applications built to be approved
We start every Driffield annexe project by establishing the real starting point, a mobile structure within Caravan Act limits, an incidental outbuilding, or genuine independent living space, since that single distinction shapes everything that follows.
Your Driffield application or certificate, whichever applies, is built around what your local council specifically expects to see, not a generic template.
Structural and building regulations work for Driffield annexe projects is handled properly from the outset, informed by real experience with this kind of project.
Honesty about what your Driffield annexe actually needs comes before any recommendation, not after we’ve quoted for the more expensive route.
We understand the genuine legal distinction between incidental and self-contained use for Driffield annexe projects, which is exactly what most generic guidance gets wrong.
A Lawful Development Certificate, where your Driffield annexe genuinely qualifies for it, gives you written confirmation rather than a risky assumption. If you need help with a granny annexe, give us a call on 0330 133 5316 or fill in the form below.
Not automatically, a mobile structure meeting the Caravan Act’s size and mobility test, or a genuinely incidental outbuilding, can potentially avoid it in Driffield, but a self-contained annexe with its own facilities used independently usually can’t.
Yes, potentially, if your Driffield annexe meets the legal size limits, 20 metres by 6.8 metres by 3.05 metres internal height, and is genuinely capable of being moved by road, it may qualify as a caravan under the 1968 Act.
Class E permitted development in Driffield covers incidental structures like a home office or gym, subject to height and coverage limits, but not genuine independent living accommodation with its own bedroom, bathroom, and kitchen.
Once a Driffield structure functions as independent living space, its own facilities, used separately from the household, it’s no longer incidental, and neither permitted development nor the Caravan Act route typically applies.
Yes, this is genuinely worth having for Driffield projects, confirming the position in writing protects you if the classification is ever questioned, especially at the point of sale.
Absolutely, Driffield annexe clients get the planning classification and building regulations detail handled together, not as separate, disconnected pieces of work.