Help With Planning
Caravan Act, PD & Full Planning Explained

Granny Annexe Planning Permission in
Chatham

Whether your Chatham annexe needs full planning permission depends on how it’s built and how it’s genuinely used, mobile and ancillary can mean a much simpler route than permanent and self-contained. We check this properly from the outset.

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Local to Chatham
Three Routes Explained
Council-Ready Applications

Understanding Granny Annexe Planning Permission in Chatham

Three routes exist for a Chatham 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 Chatham, but excludes anything used as separate, self-contained living accommodation, the introduction of sleeping facilities used independently changes everything.

Where your Chatham 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 Chatham annexe needing full planning permission usually needs both, our Building Regulations drawings in Chatham service covers the technical compliance side, and our structural calculations in Chatham service covers the engineering detail.

Right Route Confirmed

Caravan Act, permitted development, or full planning

Caravan Act Route

Movable structures that may need no permission at all

PD Size & Siting

Permitted development limits checked properly

Council-Ready

Applications built to be approved

Granny annexe planning permission

How We Help in Chatham

We begin every Chatham 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 Chatham 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 Chatham’s council specifically expects to see.

What Sets Our Chatham Annexe Advice Apart

Getting the classification right for a Chatham annexe, mobile, incidental, or self-contained, matters as much as the design itself, and we treat both with equal seriousness.

Every Chatham 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 Chatham 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.

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Chatham Annexe Planning Questions Answered

What determines if my Chatham annexe needs planning permission?

This genuinely depends on your specific plans for Chatham, we check whether the structure is mobile, incidental, or self-contained before advising either way.

What size limits apply to a caravan-style annexe in Chatham?

The Caravan Sites Act 1968 sets the limits, 20 metres long, 6.8 metres wide, 3.05 metres internal height, and the structure must be moveable by road in one or two sections, we check whether your Chatham plans genuinely meet this.

What outbuilding rules apply to a Chatham annexe?

It depends on genuine use, an incidental Chatham outbuilding can qualify under Class E, but introducing real sleeping accommodation used independently takes it outside permitted development regardless of size.

What makes an annexe a separate dwelling in Chatham?

Genuine independence is the test in Chatham, if the annexe could function as a separate home on its own, full planning permission is almost always the realistic route.

Is a Lawful Development Certificate worth it in Chatham?

Strongly recommended for Chatham annexes, an assumption that a structure qualifies isn’t the same as formal confirmation, and a Lawful Development Certificate closes that gap.

Can you manage everything for my Chatham annexe project?

Yes, we coordinate every part of a Chatham annexe project, from establishing the correct route through to building regulations sign-off, so nothing falls through the gap.