Hythe families often assume a granny annexe automatically needs full planning permission, in reality a structure that qualifies as a caravan under the 1968 Act, or a genuinely incidental outbuilding, can sometimes avoid that route entirely. We establish which applies to your specific Hythe project.
Get Your Free Route CheckHythe homeowners considering a granny annexe need to understand what actually changes the planning position, self-containment. An outbuilding used incidentally, for storage, a home office, or a hobby room, can be permitted development in Hythe, subject to height and coverage conditions.
Introduce a genuine bedroom, bathroom, and kitchen used independently of the main house, and that outbuilding stops being incidental, taking it outside permitted development regardless of size.
A mobile structure meeting the Caravan Sites Act 1968 definition offers a third route for Hythe annexes, but only where it genuinely remains ancillary to the household, not a separate residence in its own right. A Hythe annexe needing full planning permission usually needs both, our Building Regulations drawings in Hythe service covers the technical compliance side, and our structural calculations in Hythe 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 Hythe 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 Hythe 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 Hythe annexe projects is handled properly from the outset, informed by real experience with this kind of project.
We treat every Hythe annexe project as needing a genuinely honest assessment first, not a sales pitch toward the most expensive route.
Real experience with the Caravan Act, permitted development, and full application routes is what we bring to every Hythe project, not a one-size answer.
Structural and building regulations detail for Hythe annexes are handled properly from the outset, whichever route your project actually takes. 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 Hythe, but a self-contained annexe with its own facilities used independently usually can’t.
Yes, potentially, if your Hythe 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 Hythe 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 Hythe 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 Hythe projects, confirming the position in writing protects you if the classification is ever questioned, especially at the point of sale.
Absolutely, Hythe annexe clients get the planning classification and building regulations detail handled together, not as separate, disconnected pieces of work.