A granny annexe in Rochester can go up three genuinely different ways, as a mobile home under the Caravan Sites Act 1968, as an incidental outbuilding under permitted development, or through a full planning application, and which one actually applies depends on your specific plans. We check this properly before you commit to anything.
Get Your Free Route CheckThree routes exist for a Rochester granny annexe, and which one applies depends on genuine facts about the structure, not assumptions. The Caravan Sites Act 1968 defines a caravan by size, 20 metres by 6.8 metres, 3.05 metres internal height, and mobility, capable of being moved by road in one or two sections.
Class E permitted development covers incidental outbuildings in Rochester, but excludes anything used as separate, self-contained living accommodation, the introduction of sleeping facilities used independently changes everything.
Where your Rochester annexe doesn’t fit either of the simpler routes, a full planning application is the honest answer, and we confirm this properly rather than guess. A Rochester annexe needing full planning permission usually needs both, our Building Regulations drawings in Rochester service covers the technical compliance side, and our structural calculations in Rochester 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
Every Rochester annexe enquiry starts with the same honest question, mobile caravan, incidental outbuilding, or genuine separate dwelling, since the answer determines everything that follows.
From there, we confirm the correct route for your Rochester project and prepare exactly what’s needed, a Lawful Development Certificate or a full planning application.
Structural detail and building regulations compliance for Rochester annexes are handled properly throughout, not bolted on at the end.
Getting the classification right for a Rochester annexe, mobile, incidental, or self-contained, matters as much as the design itself, and we treat both with equal seriousness.
Every Rochester annexe project gets an honest assessment against all three routes, not a default assumption that the most complex one applies.
We coordinate structural and building regulations work for Rochester annexes properly, since getting this wrong can hold up an otherwise straightforward project. If you need help with a granny annexe, give us a call on 0330 133 5316 or fill in the form below.
It depends on three things, whether the structure genuinely qualifies as a caravan under the Caravan Sites Act, whether it stays incidental to the house under permitted development, or whether it’s a self-contained dwelling, which almost always needs a full application in Rochester.
Under the Caravan Sites Act 1968, a structure qualifies as a caravan if it’s capable of being moved by road in no more than two sections, and doesn’t exceed 20 metres in length, 6.8 metres in width, or 3.05 metres in internal height, Rochester annexes meeting this can often avoid planning permission if they stay ancillary to the house.
Only if it stays genuinely incidental to the house, Rochester outbuildings under Class E permitted development cannot be separate, self-contained living accommodation, the moment sleeping facilities are used independently, permitted development stops applying.
A Rochester annexe with its own bedroom, bathroom, and kitchen, used independently of the main house rather than as shared accommodation, is generally treated as self-contained, which usually means full planning permission is needed.
We recommend it, even where your Rochester annexe genuinely qualifies as a caravan or permitted development, a Lawful Development Certificate gives you written confirmation rather than an assumption that could cause problems later, particularly when selling.
Yes, we handle the full picture for Rochester annexe projects, the planning route, whichever applies, and building regulations compliance, as one coordinated service.