Help With Planning
Caravan Act, PD & Full Planning Explained

Granny Annexe Planning Permission in
Histon

Introducing sleeping accommodation into a Histon outbuilding changes its planning status entirely, from incidental permitted development to something that almost always needs a full application. We assess your specific project honestly.

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Local to Histon
Three Routes Explained
Council-Ready Applications

Getting The Histon Annexe Question Right First

Histon 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 Histon, 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 Histon annexes, but only where it genuinely remains ancillary to the household, not a separate residence in its own right.

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 Histon

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

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

The Case For Proper Annexe Advice In Histon

We treat every Histon 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 Histon project, not a one-size answer.

Structural and building regulations detail for Histon 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.

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What Histon Families Ask About Garden Annexes

Can I build a granny annexe in Histon 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 Histon, but a self-contained annexe with its own facilities used independently usually can’t.

Can my Histon annexe qualify as a mobile home?

Yes, potentially, if your Histon 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 Histon?

Class E permitted development in Histon 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 Histon annexe need full planning permission?

Once a Histon 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 Histon annexe?

Yes, this is genuinely worth having for Histon 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 Histon properties?

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