One Building

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Best in
class.

Located at the heart of Cardiff’s Central Business District, the refurbishment of One Callaghan Square will create inspiring workspace over five floors in one of the city’s most sought-after office buildings.
One Callaghan Square

First Impressions

Taking up a prominent position overlooking Callaghan Square, the 94,000 square foot fully refurbished five-storey building has created a bold impression.

Work Well

This Grade A workspace focuses on health, well-being and performance. You’ll experience enhanced air quality, spaciousness and comfort with full-height windows providing abundant natural light.
One Callaghan Square Interior
One Callaghan Square Enterance

Arrival Experience

The dedicated concierge team will welcome you into the superb double-height reception. There’s a mix of lounge areas, meeting booths and a coffee bar where you can meet, work and relax.

End-of-Trip

Generous secure cycle storage, showers and changing rooms are accessible at ground level, with additional showers on every floor.
One Callaghan Square Interior

End-of-Trip

Generous secure cycle storage, showers and changing rooms are accessible at ground level, with additional showers on every floor.
One Callaghan Square
One Callaghan Square
One Callaghan Square
One Callaghan Square
One Callaghan Square
One Callaghan Square
One Callaghan Square

Everything
you need.

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Extended feature double height reception
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Secure dedicated car parking with 5 EV charging points
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New WC’s, showers and changing facilities
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New VRF air conditioning throughout
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LED lighting with efficient sensors
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Metal suspended ceilings or exposed soffit option
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Fully accessible raised floor
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WELL Silver
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Minimum EPC ‘B’ rating
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All electric (no gas)
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Secure cycle storage
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4 new passenger lifts