Fully Installed Premium Timber Granny Annexes by Norwegian Log

Crafted in Britain. Rooted in Norwegian Design. Built for generations.

Fully insulated, low-maintenance garden annexes that are built to last.

Our log-built granny annexes combine timeless Norwegian craftsmanship with modern comfort. 

  • Each structure is a self-contained energy-efficient home: warm, quiet, and naturally insulated
  • Not just for grandparents, each annex is ideal for parents, relatives, or anyone who wants their own space close to family.
  • Every Norwegian Log annexe is engineered in FSC-certified solid timber, manufactured in Reading, and designed for all-year living
  • Unlike composite or modular shells, these buildings feel substantial — cool in summer, cosy in winter, and built to last a lifetime.
  • Fully fitted kitchens and bathrooms with many options to choose from.

Everything handled for you, for peace of mind.

For more than 40 years, Norwegian Log has been the UK market leader in high-specification, premium timber annexes.

  • We take care of everything, so you can relax. 
  • From bespoke design, lawful development certificate or planning permission (though usually exempt under The UK Mobile Homes and Caravan Act), groundworks, installation, aftercare, and customer service. 
  • Everything is handled 100% in-house: giving you a genuine turnkey experience. 
  • Every annexe is purpose built for your needs, including with as many rooms and bedrooms as you require. 

Explore our signature one-to-four-bedroom designs below — or talk to us about creating a bespoke annexe with as many rooms as you need.

Enquire

Planning Permission

Simplified Planning Permission

Annexes built for the exclusive use of a family member on your property are usually exempt from planning permission.

Price

No VAT or Council Tax

Another advantage of our transportable homes as granny annexes is that there's no VAT to pay. In addition, providing your annexe is being used by a dependent relative, it is typically exempt from Council Tax.

Granny Annex

DDA Compliant

All our floor plans are fully compliant with DDA requirements for disabled access without further modification.

Gallery

Design Your Unique Granny Annexe

Explore our collection of 24 guide designs, from compact one or two-bedroom to spacious four-bedroom family annexes. Each layout showcases what’s possible with our fully insulated and thermally efficient solid-log construction: light-filled living spaces, open-plan kitchens, and accessible wet-room bathrooms designed for year-round comfort.

Every Norwegian Log annexe is made to order. You can select one of our proven templates or use it as a starting point for our free bespoke design service. Our in-house team will tailor the layout, finishes, and access features to your exact requirements — whether you need DDA-compliant doorways, extra storage, or a guest room for visiting family.

Granny Annexe Features

Our range begin with compact and convenient one- and two-bedroom log cabin-style granny annexes all the way up to four-bedrooms with room for the extended family plus guests.

A permanent cosy environment, our log home annexes offer flexibility, comfort and privacy beyond what a normal granny flat or granny pod can provide.

These fully-insulated granny annexes offer independent living with a safety net, ideal for those with disabilities, additional needs or who just want to be close to home and familiar faces.

They are suitable for everyone in the family. A Norwegian Log family annex can be a cost effective means for a daughter or son to get on the housing ladder.

Optional extras include:

Care assistance package
Accessories to make life easier and safer include thoughtfully positioned grab rails, shower seat, etc.

Canary Care monitoring system
Canary Care discreetly monitors temperature and movement in your home without affecting privacy. It can detect visitors, too, and operates with all UK mobile networks to give you and your loved ones complete peace of mind.


Housing parents in a comfortable and warm granny annex for just one year can already mean significant savings on care home costs. In 2023 the average annual fee for a room in a care home in the South East was £54,000, and for those needing nursing care, £60,100.

Five years' basic care costs would amount to £270,000, rising to over £300,000 for a more intensive package.

With Norwegian Log granny annex packages beginning at £99,845, this is already significantly less than the annual price for a care home for two.

A fully-insulated garden annex is an incredibly versatile, long term investment which can adapt to suit your changing family or lifestyle. Some families have planned to live in an annexe in their parents’ curtilage (the land attached to a house) to begin with and eventually swap homes, with the older generation moving into the granny annexe and the younger generation moving into the main house.

All our granny annexes are made from natural, sustainable wood combined with modern cavity insulation, making them warm in winter, cool in summer and reducing running costs to a minimum.

This saves on energy costs throughout the year, with minimal maintenance required thanks to the immensely strong and durable construction from made to measure northern Scandinavian Spruce rather than flimsy prefabricated panels.

Optional features such as Wi-Fi controlled underfloor heating includes zoned programmable thermostats that ensure balanced, gentle warmth throughout your home.

All of our annexes come with a five-year warranty which is extendable to 25 years and covered by a comprehensive maintenance package.

A log home annex will add value to your home, and with our garden annexes designed to last a lifetime it, could prove to be the perfect long-term investment.

Versatility and flexibility: if family circumstances change, an empty garden annex can quickly begin paying its way to increase your garden’s income potential. You can offer B&B rooms or provide a self-contained home in your garden for rental. Business use is subject to a different planning regime, of course, so please consult a professional.

When you’re looking to sell up, annexes are a popular way to stand out in the property market, with estate agents reporting that properties with an existing annexe are in high demand and tend to sell quickly.

Timeless Traditional Log Cabin Annexes

We offer two design styles in a range of different sizes. For a classic Scandinavian log cabin experience, our traditional annexes are built from solid log using interlocking, high precision, computer-controlled-and-shaped logs.

These are cosy and well insulated, with an indefinite lifespan. All of our traditional annexes have a full fit out package available too.

Our annexes also offer a choice of roof styles. Alongside our pitched roof garden annexes, which offer airy vaulted ceilings, we also offer mono-pitch mobile homes with a single sloping roof that you can install close to a boundary - where light might be an issue.

Stylish Contemporary Garden Annexes

For a more modern, fresh feel, our smart contemporary style garden annexes feature an eye-catching glass frontage and new log technology - which opens up new intriguing design options, using angled shapes rather than right angles.

These contemporary annexes are bright and welcoming, but still strong, durable and draught free. We offer all of our Contemporary annex styles with the 'turnkey' full fit out, or you can choose to complete the fit out yourself to your family's specific requirements.

Granny Annexe Planning Permission

Each annex is quick and clean to install with minimal disruption, and in most cases, you won’t need planning permission or building regulations approval when you install one of our granny annexes.

Annexes sited in the garden for the exclusive use of a family member are usually exempt from planning permission. You can read more about this in our handy guide to mobile home Planning Permission. Or contact us for some straightforward advice.

We do recommend that we obtain a Lawful Development Certificate from your council which confirms that planning permission isn't required - we will even handle this process 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. With prices starting at just £61,703 and finance available it's easy to see why a Norwegian Log garden annexe is a viable solution.

We’ll erect your log annexe quickly and cleanly, with minimal disruption to your garden. If access is awkward, we can carry all the prefabricated components for your annexe either down the side of the house, or even through a domestic doorway.

We offer a groundworks service for all our installations, meaning Norwegian Log can offer a complete service from concept through to completion.

Alternatively we can work with a local provider of your choice should you prefer to manage this element yourself.

FAQs

Annexes sited in the garden for the exclusive use of a family member are usually exempt from planning permission. You can read more about this in our handy guide to mobile home Planning Permission. Or contact us for some straightforward advice.

We do recommend that we obtain a Lawful Development Certificate from your Council which confirms that planning permission isn't required - we will even handle this process on your behalf. If Planning Permission is required, our experts will be happy to guide you through the process and deal with the application.

A garden annex will add value to your home, and with our annexes designed to last a lifetime it could prove to be the perfect long-term investment.

If family circumstances change, an empty garden annex can quickly begin paying its way to increase your garden’s income potential. You can offer B&B rooms or provide a self-contained home in your garden for rental. Business use is subject to a different Planning regime, of course, so please consult a professional.

When you’re looking to sell up, annexes are a popular way to stand out in the property market, with estate agents reporting that properties with an existing annexe are in high demand and tend to sell quickly.

We offer a groundworks service for all our annexe installations, meaning Norwegian Log can offer a complete service from concept through to completion.

Alternatively we can work with a local provider of your choice should you prefer to manage this element yourself.

We focus our installations within the UK. Over the past three decades, we've likely worked in almost every region of the UK, and we're well-equipped to serve customers across Great Britain. However, please note that we do not currently offer installation services in Northern Ireland or the Republic of Ireland.

Norwegian Log annexes are highly energy-efficient as they are excellent at retaining heat and conserving energy. This is owing to the logs' natural insulation combined with modern cavity insulation. This combination, with the natural temperature control properties of the logs, means your granny annexe will stay cool in the summer and warm in the winter.

The high levels of insulation keep running costs to an absolute minimum, reducing exposure to rising energy costs. Our family annexes are sustainable, eco-friendly and cause minimal disruption to the environment.

Our team is happy to provide information and guidance to help you explore your options. We can certainly guide you through several potential routes to help fund your project.

For optimum convenience we offer an internal fitout service on all of our annexes. There's a wide choice of styles for kitchens and bathrooms to really bring your dream home to reality.

All of our annexes come with a five-year warranty which is extendable to 25 years and covered by a comprehensive maintenance package.

Timelines can vary depending on project size and client feedback, but here’s a general overview:

  • Initial design: First draft delivered within 1–2 days
  • Quotation: Typically takes 2–5 days, depending on communication and revisions
  • Final log cabin design: Usually completed within 1 week
  • Planning process: Around 8 weeks
  • Manufacturing: Typically 10–12 weeks
  • Groundworks: Usually around 1 week, depending on size and site specifications
  • Installation: Generally 5–10 weeks, depending on cabin size
  • Fit-out: Approximately 2–3 weeks

Annexe Case Studies

The Norwegian Log team has been working to make dreams a reality for over 30 years.
Take a look at some of our work and happy customers who've bought a granny annexe from us.