Designed, Installed, Fully-Fitted
Discover Timberspecs’ range of bespoke granny annexes, keeping your loved ones closer. Choose from contemporary and traditional log cabin granny annexe designs, from 1 to 6 bedrooms to suit the size and style you need. All of our self-contained granny annexes are built with cavity wall, or solid log construction ensuring durability, efficiency and the highest quality materials for long-term, full-time living. If you are looking to install a garden granny annexe, they are exempt from planning permission, speeding up installation. Contact us to discuss your granny annexe project.
Exempt Under the Caravan Act
The advantage of having a granny annexe is that, providing it’s sited in the garden and ancillary to the main residence, it typically won’t need full planning permission. Instead, only a Certificate of Lawfulness is required, which is obtained far more quickly than a standard planning application. Council tax on the annexe is also reduced by at least half (or waived entirely if the occupant is disabled), and VAT is zero-rated for these builds.
Timberspecs takes care of everything else. We offer free site visits and free drawings plus a full turn-key option covering kitchens, bathrooms and heating, so there’s no need to co-ordinate a dozen different trades yourself.
With annexes starting from £68,000, and 30 years’ industry experience helping families build multi-generational homes across the UK, we’ll guide you from that first conversation through to the day your family member moves in.
Sustainable, Durable, Efficient
Every Timberspecs annexe is available in two build types: Cavity Wall, a modern, energy-efficient system built around an insulated core, or Solid Log Construction, a traditional method using naturally insulating interlocking logs. Both are built to last, with wood’s natural properties giving a level of thermal efficiency that’s harder to achieve with brick, without sacrificing strength or durability.
Whichever construction you choose, you get a home built to stand the test of time and keep energy costs down, with a 10 year warranty and a predicted lifespan of 200 years.
We start with your vision. Our team creates a bespoke design and gives you a clear, no-obligation quote, so you know exactly what you're getting before anything is built.
Your granny annexe is manufactured off-site to the highest standard, then delivered and installed, backed by a 10-year guarantee. From first call to final handover, it's one team, one point of contact, done for you.
We handle the groundworks, planning advice, plumbing and electrics, and fit your kitchen and bathroom. There's nothing left for you to arrange or coordinate.
1 BEDROOM EXAMPLE
Our 1-bedroom floor plans are just the beginning – at Timberspecs, we offer a wide range of layout options to suit your unique needs. Whether you want to add a veranda, install French doors, or select different finishes, we can customise every detail to match your vision. Each design can be adapted to reflect your lifestyle, creating a space that’s both functional and stylish. Let us help bring your dream home to life with a bespoke layout tailored specifically for you.
2 BEDROOM EXAMPLE
Our 2-bedroom layouts offer endless possibilities, tailored to your needs. Whether you prefer an open-plan living space, an extra bathroom, or a larger kitchen, we customize every detail to match your vision. Choose from different cladding options, window styles, and roof designs to create a home that’s uniquely yours. At Timberspecs, we ensure your home is designed for both comfort and style.
3 BEDROOM EXAMPLE
Our 3-bedroom layouts provide the perfect blend of space and flexibility. Whether you need a home office, en-suite master bedroom, or extra storage, we’ll tailor the design to fit your lifestyle. Customize your home with bifold doors, vaulted ceilings, or an extended living area to create a light-filled, modern space. At TimberSpecs, we bring your vision to life with a bespoke layout designed just for you.
4 BEDROOM EXAMPLE
Our 4-bedroom log cabins offer plenty of space for families, holiday homes, or peaceful countryside retreats. Whether you’d like a cozy log-burning stove, an open-plan kitchen-diner, or extra storage space, we’ll tailor the design to suit your lifestyle. Personalize your cabin with exposed beams, a covered porch, or large picture windows to create a warm and inviting home. At TimberSpecs, we craft beautiful, bespoke log cabins that blend rustic charm with modern comfort.
6 BEDROOM EXAMPLE
Our 6-bedroom log cabins provide the perfect solution for large families, holiday retreats, or shared living spaces. Whether you need a games room, multiple en-suite bathrooms, or a spacious open-plan living area, we’ll tailor the layout to your needs. Personalize your cabin with a wraparound veranda, floor-to-ceiling windows, or a rustic timber interior for a unique and inviting home. At TimberSpecs, we design stunning, handcrafted log cabins that combine space, comfort, and natural charm.
ALL OUR CABINS REQUIRE MINIMAL GROUNDWORK
Timberspecs build to your plans or we will design something to suit all your requirements. We can supply free drawings for planning permission (if needed, usually not) and free site visits to discuss your needs. A full turn key option is available to include kitchens and bathrooms and heating etc if required.
Unlike flat-pack annexes built to a standard template, every Timberspecs granny annexe is bespoke, designed around your plot, your layout, and how the space will actually be used. That means better insulation, stronger construction, and a design that fits your family rather than a generic mould. It costs more upfront, but you get an annexe built to last, saving you from paying twice for fixes or replacements later.
All our insulated garden and 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.
Fully fitted across the UK
Granny annexes have been part of what we do for as long as we’ve been building across the UK, helping families create independent living space for parents, grandparents, or relatives who need extra support, without anyone having to move away from home. Over that time we’ve refined the details that matter most for this specific use: layouts that work for reduced mobility, insulation that keeps energy costs manageable for a second household on the same plot, and a build process that’s simple enough to fit around family life rather than disrupt it.
MAKING DREAMS A REALITY FOR 25 YEARS
Size, choice of construction (Cavity Wall Insulation or Solid Log), internal finish, and site-specific factors like groundworks all affect the final price beyond the £68,000 starting point.
In most cases, no. Annexes sited in the garden for the exclusive use of a family member are typically exempt under the Caravan Act, so there’s no planning application to navigate for most builds.
Beyond kitchens, bathrooms, and heating, turnkey covers groundworks, plumbing, and electrics too, so the only thing left for you to do is move in.
Turnkey pricing is agreed upfront in one quote, so there are no separate trade invoices or coordination costs to budget for.
An annexe gives a family member their own independent space while staying close by, without the disruption or cost of an extension, and without the ongoing fees of residential care.
Yes. Timberspecs has partnered with Town & Country Finance to offer flexible finance and mortgage products, alongside options like self-build mortgages, secured loans, and holiday home finance depending on how the annexe is classified.
Standard mortgages are designed for brick-built homes, so a log annexe may need a specialist lender instead, self-build mortgages, mobile home financing, or holiday home finance, depending on how the annexe qualifies under the Caravan Act.
Surveyors tend to view a fully compliant, bespoke build as a genuine asset, adding real value to the property rather than just extra square footage. A flat-pack cabin sits in a different category altogether: it’s usually treated as a temporary garden structure, not a permanent addition, so it contributes little to long-term value and can create complications at sale if it’s been used as a bedroom without proper compliance.