Capital allowances
Every commercial building contains fixtures that qualify for capital allowances. The wiring, the heating, the lighting, the sanitaryware. Most owners have never claimed a penny of it, and nor have most tenants who paid for their own fit-out.
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Owned or leased. A few questions, no cost, and a straight answer either way.
Capital allowances are not about the bricks. They are about everything inside the building that makes it work, and about who paid for it.

A share of what you paid for a commercial property relates to fixtures already in the building. That share can qualify, even if the purchase was years ago and you have owned it ever since.
How this one works
New build and extension costs split between the structure and the plant inside it. The structure has its own relief. The plant has a better one.
How this one works
Refits, rewires, new heating, new kitchens, new air conditioning. Refurbishment is usually where the largest unclaimed allowances sit.
How this one works
You do not have to own the building. A tenant who paid for their own partitioning, air conditioning, lighting or kitchen can usually claim on that expenditure, whatever the lease length.
What a tenant can claimThe reason so much goes unclaimed is not complexity for its own sake. It is that identifying the qualifying items inside a building is a surveying job as much as an accounting one.
Your accountant sees a single figure on a completion statement. Nobody has broken that figure down into the heating, the electrics, the fire alarm and the fitted kitchen, because doing so takes a site survey and a valuation of each element.
That breakdown is the work. Once it exists, the allowances follow.

Owning the building is not the only route in. What matters is who paid for the work, not whose name is on the title.
If you own a property
If you lease and fitted it out
If you are buying or selling
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