Havant granny annexe projects range from a straightforward incidental outbuilding to a genuinely self-contained dwelling, and the planning route differs enormously between the two. We work out which applies to you honestly.
Get Your Free Route CheckHavant families often assume a granny annexe is either always simple or always complicated, the reality depends entirely on how it’s built and used. The Caravan Sites Act 1968 defines a caravan as a structure capable of being moved by road, within strict size limits, and a genuinely mobile annexe meeting that definition can sometimes avoid planning permission altogether.
Permitted development under Class E covers incidental outbuildings in Havant, subject to height and coverage limits, but not genuine self-contained living accommodation with its own bedroom, bathroom, and kitchen used independently.
We assess your specific Havant property and plans against all three routes honestly, rather than assuming the most complex one applies by default. A Havant annexe needing full planning permission usually needs both, our Building Regulations drawings in Havant service covers the technical compliance side, and our structural calculations in Havant 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 begin every Havant annexe project with an honest assessment of the actual plans, size, mobility, and intended use, before any design work begins.
Where the Caravan Act or permitted development genuinely applies to your Havant project, we confirm that properly, usually via a Lawful Development Certificate, rather than defaulting to a full application that isn’t needed.
Where genuine self-containment means a full application is required, we build that around what Havant’s council specifically expects to see.
Every Havant annexe assessment starts with an honest read on which of the three routes genuinely applies, not an assumption that defaults to the more complex, more expensive option.
We check the real mobility and size of a proposed Havant structure against the Caravan Act’s actual legal definition, rather than assuming it qualifies.
Where a Havant annexe genuinely needs a full application, we say so directly and build it around what the council expects to see. 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 Havant, but a self-contained annexe with its own facilities used independently usually can’t.
Yes, potentially, if your Havant 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 Havant 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 Havant 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 Havant projects, confirming the position in writing protects you if the classification is ever questioned, especially at the point of sale.
Absolutely, Havant annexe clients get the planning classification and building regulations detail handled together, not as separate, disconnected pieces of work.