Garden Rooms, Offices & Studios
Garden room or extension: which one solves your problem?
These two options solve different problems that can look identical on a wish list. An extension makes the house bigger. A garden room makes the property bigger while leaving the house exactly as it is. If the space needs to be part of daily household flow, such as a kitchen or a family room, the garden almost never works. If the space is better for being separate, the garden often wins on cost and disruption.
Start with the use, not the budget
Ask one question: does this space need to be connected to the rest of the house? A larger kitchen, a downstairs WC, a bigger living room and a fourth bedroom all need to be in the house. An office, a gym, a studio, a hobby room and a teenage den often work better away from it.
The separation that makes a garden room awkward for cooking is exactly what makes it excellent for concentration.
How they compare in practice
Setting the use aside, the differences fall into a small number of areas.
| Factor | Garden room | Extension |
|---|---|---|
| Living in the house during works | Largely undisturbed | Significant disruption |
| Typical cost per square metre | Lower | Higher |
| Planning | Often permitted development | Often permitted development, more conditions |
| Building regulations | Limited for a plain room | Full application |
| Party wall matters | Rarely relevant | Often relevant on boundaries |
| Effect on garden | Reduces garden area | Usually reduces it too |
| Effect on the house layout | None | Can transform it |
The disruption difference
This is underrated until you live through it. An extension means scaffolding, structural openings, dust through the house, and often a period without a kitchen or with restricted access.
A garden room build happens outside. The house stays usable throughout, with the exception of a day or two while the supply cable is connected.
What each does for the property
An extension changes how the house works and is reflected in floor area. A garden room adds a distinct, flexible building that buyers value differently depending on quality and whether it is properly permitted and certified.
Neither is automatically the better investment. A poorly executed extension that leaves a dark middle room can be worth less than the money spent on it, and a beautifully built garden office can be the reason a buyer chooses one house over another.
When people do both
It is common to build a garden office first, because it is quicker and less disruptive, then extend later when the family need changes. Doing them in that order also means the garden building is available as somewhere to work while the house is being pulled about.
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Frequently asked questions
Talk it through before you spend anything
We build both, so we have no reason to push you either way. Describe the space you need and we will tell you which route makes more sense for your house.
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