Help With Planning
Caravan Act, PD & Full Planning Explained

Granny Annexe Planning Permission in
South Petherton

South Petherton homeowners considering a granny annexe are often surprised to learn a mobile home route exists alongside the usual planning permission and permitted development options. We give you an honest read on all three for your specific South Petherton property.

Get Your Free Route Check
Local to South Petherton
Three Routes Explained
Council-Ready Applications

The South Petherton Granny Annexe Planning Position

South Petherton 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 South Petherton, 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 South Petherton property and plans against all three routes honestly, rather than assuming the most complex one applies by default. A South Petherton annexe needing full planning permission usually needs both, our Building Regulations drawings in South Petherton service covers the technical compliance side, and our structural calculations in South Petherton 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 South Petherton

Every South Petherton 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 South Petherton project and prepare exactly what’s needed, a Lawful Development Certificate or a full planning application.

Structural detail and building regulations compliance for South Petherton annexes are handled properly throughout, not bolted on at the end.

Honest Annexe Advice For South Petherton

Every South Petherton 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 South Petherton structure against the Caravan Act’s actual legal definition, rather than assuming it qualifies.

Where a South Petherton 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.

Free Route Check

Get Your Free Route Check

What South Petherton Families Ask About Garden Annexes

Can I build a granny annexe in South Petherton without planning permission?

Not automatically, a mobile structure meeting the Caravan Act’s size and mobility test, or a genuinely incidental outbuilding, can potentially avoid it in South Petherton, but a self-contained annexe with its own facilities used independently usually can’t.

Can my South Petherton annexe qualify as a mobile home?

Yes, potentially, if your South Petherton 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.

Does Class E cover a granny annexe in South Petherton?

Class E permitted development in South Petherton 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.

When does my South Petherton annexe need full planning permission?

Once a South Petherton 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.

Should I get written confirmation for a South Petherton annexe?

Yes, this is genuinely worth having for South Petherton projects, confirming the position in writing protects you if the classification is ever questioned, especially at the point of sale.

Do you coordinate the full annexe process for South Petherton properties?

Absolutely, South Petherton annexe clients get the planning classification and building regulations detail handled together, not as separate, disconnected pieces of work.