A granny annexe in Lindfield 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 CheckLindfield 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 Lindfield, 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 Lindfield annexes, but only where it genuinely remains ancillary to the household, not a separate residence in its own right. A Lindfield annexe needing full planning permission usually needs both, our Building Regulations drawings in Lindfield service covers the technical compliance side, and our structural calculations in Lindfield 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 Lindfield annexe enquiry starts with establishing the real facts, is the structure genuinely mobile within Caravan Act limits, is it staying incidental to the house, or is it a self-contained dwelling, since that shapes the whole route.
From there, we prepare exactly what your Lindfield project needs, whether that’s a Lawful Development Certificate confirming caravan or permitted development status, or a full planning application.
Structural and building regulations input runs alongside the planning process for Lindfield annexe projects, whichever route applies.
We treat every Lindfield 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 Lindfield project, not a one-size answer.
Structural and building regulations detail for Lindfield 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.
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 Lindfield.
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, Lindfield annexes meeting this can often avoid planning permission if they stay ancillary to the house.
Only if it stays genuinely incidental to the house, Lindfield 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 Lindfield 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 Lindfield 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 Lindfield annexe projects, the planning route, whichever applies, and building regulations compliance, as one coordinated service.