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Garage Conversion vs Single Storey Extension
If you have an integral or attached garage that's mostly used for storage rather than a car, converting it is almost always the faster, cheaper route to more usable space — but it only works if the garage is in the right place and large enough for what you need.
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“Pindi is an excellent tradesman. His attention to detail is second to none and he's a really nice guy to work with. Highly recommend.”
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“Pindi did a fantastic job with my kitchen. He understood my requirements from the start and I was very happy with the finished result. His workmanship was exceptional.”
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“I used Pindi Sahota for a house conversion, all works were carried out professionally.”
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| Garage Conversion | Single Storey Extension | |
|---|---|---|
| Typical cost | £25,000 – £45,000 | £90,000 – £135,000 |
| Typical duration | 4–6 weeks | 10–14 weeks |
| New floor area | Limited to existing garage footprint | New footprint, size is flexible |
| Planning permission | Often permitted development | Often permitted development |
Why Garage Conversions Are So Much Cheaper
You're already starting with a roof, walls and a floor slab in place — the work is mainly insulation, a proper floor build-up, replacing the garage door with a wall and window, electrics, and finishing. There's no excavation or new foundation work, which is where a large share of extension cost sits.
The Limitation: You're Fixed to the Garage Footprint
A garage conversion can't be made bigger than the existing garage — if you need more space than that footprint provides, a single storey extension (potentially incorporating the former garage) is the only way to get it.
Combining Both
A common and cost-efficient approach is converting the garage for a defined use — home office, playroom, gym — while building a separate, smaller extension for the specific space (usually kitchen) that genuinely needs a new footprint.
FAQ
Related Questions
Do I lose parking if I convert my garage?
Yes, in practical terms — if off-street parking matters to you or to the property's resale appeal, this is worth weighing against the value of the extra room.
Can a garage conversion be used as a bedroom?
Yes, provided it meets Building Regulations for habitable rooms — adequate insulation, ventilation, fire escape provision, and ceiling height.
Ready to Start Your Project?
Free written quote from your local Berkshire building contractor — usually within 10 working days, depending on the size of your project.