Granny Annexes

  • Prices Starting at £54,995
  • The perfect granny annex
  • Simplified Planning Permission
  • Quick and clean installation

The perfect granny annex

It’s the Norwegian Log Effect™ that makes our mobile log cabins perfect as granny annexes. The light and airy layout. The low energy and maintenance costs. And the comfort and convenience of a home designed by experts in the field. Plus a choice of style: classic log cabin, or a more contemporary interpretation. And not least, a five-year extendable warranty.

Cleverly designed layouts

Our versatile construction system makes it easy to achieve the layout you want in your granny annex. Our transportable homes offer functional spaces for kitchen, shower/WC and everything else you would expect for comfortable, self-contained living. Alongside our pitched roof buildings, which offer airy vaulted ceilings, we also offer mono-pitch mobile log homes that you can install closer to a boundary, or where light might be an issue.

Low running costs

Log’s high level of natural insulation helps keep energy costs low throughout the year: a granny annex that’s not only cosily warm in winter, but also pleasantly cool in summer. Our mobile log cabins require only minimal routine maintenance for an indefinite lifespan (see below for warranty information), which also contributes to their low running costs.

Timeless Traditional

Our Timeless Traditional transportable log homes offer:

  • Interlocking logs in the classic Norwegian style
  • High-precision, computer-controlled cutting and shaping
  • Immensely strong, draught-free homes

Stylish Contemporary

Our Stylish Contemporary mobile log homes have:

  • Possibility of huge glazed areas
  • Intriguing design options
  • Draught-free strength and durability

Extendable 5-year warranty

For your reassurance, all our mobile log cabins have a full five-year warranty, provided you comply with our maintenance recommendations. And you can extend your warranty to 25 years by joining our optional warranty inspection plan.

No mobile home Planning Permission

In most cases, you won’t need Planning Permission or Building Regulations approval when you install one of our transportable homes as a granny annex. You can read more about this in our guide to mobile home Planning Permission, which also explains where you can locate a granny annex in your garden. Or contact us for straightforward advice.

We do recommend that you obtain a Certificate of Lawful Development from your Council, which we can handle on your behalf. If Planning Permission is required, our experts will be happy to guide you through the process and deal with the application.

Another advantage of our transportable homes as granny annexes is that there’s no VAT to pay – a big saving on your initial costs.

Quick and clean installation

We’ll erect your mobile log cabin quickly and cleanly, with minimal disruption to your garden. We can usually deliver your Stylish Contemporary annex pre-assembled in our factory, further reducing the time on site and allowing you to move into your new home in days. If access is difficult, we can carry all our building components through an ordinary domestic doorway.

Complete packages from just £54,995

You don’t want to waste time and energy finding and co-ordinating all the different trades. When you have one of our complete package mobile log cabins, we do everything for you – plan, design, install – and all from only £54,995 for a Stylish Contemporary model (subject to location). You also get the convenience and reassurance of personal service from a single, responsive supplier.

For the ultimate in timesaving convenience, our turnkey packages deliver a finished transportable home ready for immediate occupation and in just weeks from order.

Most frequently asked questions

Do I need planning permission for my granny annex?

That will depend on how your annex is constructed. In most cases a Norwegian Log granny annex does not require planning permission because our annexes are classed as a mobile home.  We do however apply for a Certificate of Lawful Use on your behalf, which confirms that planning permission is not required.

How does the annex arrive at my house?

We have two methods.  If there is sufficient access we can deliver our modular system annex to site in sections that have been pre-assembled in our factory, the sections are then lifted into position by crane.  If access for a crane is not available then the alternative is for the pre-manufactured components to be delivered to site in a flat pack and the annex is assembled on site by our expert technicians.

Can you deliver a granny annex to a site with restricted access?

Yes, the components can be walked down the side of the house and if necessary through the house provided there is a straight run.

Can my granny annex be relocated at a later date?

A modular granny annex can be removed in exactly the same way as it was delivered.  Our traditional log style annexe’s can be taken down and re-assembled elsewhere. However, in our experience once an annex is installed for the use of family members, there would be little reason to remove it at a later date.

Do you have to pay council tax on a granny annex?

An annex in the garden can be subject to a 50% discount of the rate of Council Tax. However, your local authority will need to be contacted to confirm the discount they would apply.

What options in the granny annex do you offer for elderly care?

We can provide a Wi-Fi operated remote heating system so that your heating can be controlled by your PC or laptop or indeed a relative can do so on your behalf.  We can also provide a monitoring system that uses sensors to measure movement and temperature in the annex.  It does not use cameras or microphones thereby maintaining privacy, but it does notify if there is a lack of movement perhaps suggesting a fall.

Do I need to have Building Regulation approval?

No, not with a Norwegian Log granny annex which is classed as a mobile home and is exempt from Building Regulations.

What guarantees and after sales packages do you offer?

Norwegian Log offer a full 5 year warranty on the structure of the annex which can be increased to 25 years by taking out our bi-annual inspection plan.

Where can I see one?

We have a fully fitted out 2 bedroom log home as well as a contemporary garden room at our HQ in Reading with viewings welcome by appointment only.


'Norwegian Log gave us a great deal of time and support through the planning process, which was crucial to our success.'

Rosie Lampard

“It’s so warm and well insulated, I just think it’s excellent"

Granny Annex, Buckinghamshire

It’s warm and it’s cosy; it’s solid and it’s quiet. The fragrance of pine reminds you of Scandinavian forests and summer evenings. Your imagination starts to take you places. You imagine a wood burner, perhaps a desk or why not just some space to think?

Our show home is 28 years old, yet customers still say it looks and feels brand new. That’s the quality of our workmanship and the materials. When you step into a Norwegian Log building you’re stepping into a feeling and just like our buildings it’s one that will last.

Visit our showroom

Find out more

To see one of our transportable home granny annexes for yourself, or to start discussing your plans, please contact us to make an appointment with one of our experts.

Book appointment