Granny Annexe Planning Permission in Northwich

The Three Routes For A Northwich Granny Annexe

A granny annexe in Northwich can follow three genuinely different routes. A structure that meets the legal definition of a caravan under the Caravan Sites Act 1968, capable of being moved by road in one or two sections and within maximum dimensions of 20 metres by 6.8 metres with an internal height of 3.05 metres, can often be sited without planning permission provided it remains ancillary to the house.

An outbuilding used incidentally to the enjoyment of the house, a home office, gym, or storage, can fall under Class E permitted development, but the moment it includes genuine sleeping accommodation used independently, it’s no longer considered incidental, and permitted development stops applying.

Where neither route fits, a full planning application is the reality for Northwich properties, and we confirm this honestly rather than assume. A Northwich annexe needing full planning permission usually needs both, our Building Regulations drawings in Northwich service covers the technical compliance side, and our structural calculations in Northwich 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

How We Help in Northwich

Every Northwich 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 Northwich 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 Northwich annexe projects, whichever route applies.

The Real Requirements For Northwich Granny Annexes

We tell Northwich families honestly whether their annexe genuinely qualifies for the Caravan Act or permitted development routes, rather than defaulting every enquiry to a full application.

Getting the self-containment question right matters more than almost anything else for a Northwich annexe, and we assess this honestly rather than assume either way.

Structural and building regulations detail is built into every Northwich annexe project from the start, whichever planning route applies. 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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Common Annexe Planning Questions in Northwich

What determines if my Northwich annexe needs planning permission?

This genuinely depends on your specific plans for Northwich, 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 Northwich?

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 Northwich plans genuinely meet this.

What outbuilding rules apply to a Northwich annexe?

It depends on genuine use, an incidental Northwich 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 Northwich?

Genuine independence is the test in Northwich, 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 Northwich?

Strongly recommended for Northwich 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 Northwich annexe project?

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