Starting small and adding later
A manufactured timber building is easier to change later than a block extension. It is not infinitely flexible, though, and knowing which decisions are reversible is worth real money.
Why buying smaller first is often the right call
Most people overestimate how much space they need and underestimate how much garden they want to keep. Because a timber cabin is a defined, manufactured product rather than a bespoke build, starting with the size you need now is a low-risk decision: the building holds its usefulness, and several of the changes people want later can be made without touching the structure.
There is also a planning argument. A building inside the 30 m² garden-structure exemption is a fundamentally simpler proposition than one that needs permission, and staying inside that limit now does not prevent you from adding outdoor space, insulation or a better fit-out later.
What can be added after the cabin is up
These are the changes that do not require the building to come apart, and they cover most of what people actually ask for a year or two in.
- Decking, a terrace or a veranda — the most common addition, and the one that changes how much the cabin gets used. Available on several models and priced per project.
- Internal fit-out: flooring finishes, storage, partitions in a single open space, lining and painting the inside.
- Heating and ventilation upgrades, which are usually straightforward in a small, well-sealed building.
- Electrical additions, through the electrical contractor we work with, who certifies the installation.
- Exterior recoating in a different tone — the roof stays anthracite, but the timber finish is yours.
What has to be decided before you order
Being blunt about this saves disappointment. Some things are cheap at order stage and expensive or impossible afterwards, because they are built into the structure as it is machined.
- Wall thickness and the double wall insulation kit: adding insulation later is possible but means disturbing finished internal surfaces, so it costs far more than specifying it now.
- The position and size of window and door openings — these are cut into the wall logs in the factory.
- Floor insulation depth, which is under the floor and not accessible later.
- A mezzanine, heavy wall-hung units or anything that needs the wall detailed for its loads and for seasonal movement.
- Plumbing routes for the turnkey bathroom, which determine where wet areas can go.
Worth knowing: Enlarging the footprint of an assembled log cabin is not a realistic retrofit. Log walls work as interlocking courses with notched corners, so extending means opening up the structure. Plan the footprint for where you expect to be in five years, then add outdoors and inside.
The planning threshold is the real constraint on growth
The practical limit on adding to a garden building in Ireland is usually regulatory rather than structural. A back-garden structure can be exempt from planning permission up to 30 m², and a detached auxiliary dwelling of 32–45 m² to the rear of the main house can be exempt with 14 days' notice to the council, both subject to conditions including how much open space is left in the garden.
That means an addition which pushes you past a threshold, or uses up the remaining open space, changes the regulatory position of the whole building — not just the new part. Check it before you commit to the extra space, because the exemptions also depend on local designations that vary by site.
Cabins can be dismantled and moved
A bolted, interlocking timber structure on foundation blocks is genuinely demountable in a way a block building is not. People move cabins when they move house, or reposition one in the same garden after living with it for a season.
It is a real job rather than a free option — the roof covering, joinery and finishes all have to come off and go back — but it is possible, and it is one reason a timber cabin holds value better than its price suggests.
Frequently asked
Can I extend my cabin later?
Not by enlarging the log structure — that is not a practical retrofit. What you can add is outdoor space (decking, terrace, veranda), a better internal fit-out, heating and services. For more internal floor area, plan the footprint correctly at the start.
Can the wall insulation kit be added afterwards?
Technically yes, in practice rarely worth it. It means taking back internal finishes and working around fitted items, so the labour swamps the saving. If there is any chance the building becomes a year-round space, specify the kit at order stage.
Can a cabin be moved to a new address?
Yes. The structure can be dismantled and reassembled, which is one of the practical advantages of a bolted timber kit on foundation blocks. It is a full job with its own cost, not a lift-and-shift, so get it quoted before assuming it into a decision.
Keep reading
Plan for five years, not five months
Tell us what the building is for now and what it might become. We will tell you which decisions to make at order stage and which can safely wait.
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