Office in Cardiff Bay available to rent
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Office Spaces to Rent in Cardiff Bay (Cardiff)

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Long-lease office spaces alongside fully serviced and managed offices, ideal for businesses seeking a professional environment with flexibility to grow

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More details for 3 Britannia Quay, Cardiff - Office to Rent

3 Assembly Square, Britannia Quay, Cardiff - 3 Britannia Quay

Cardiff, CF10 4PL

  • Office to Let
  • £23.00 sq ft pa
  • 7,418 sq ft
  • 1 Space Available Now
  • Energy Performance: B
  • Air Conditioning
  • Natural Light
  • Bicycle Storage
  • CCTV (Closed Circuit Television Monitoring)
  • DDA Compliant
  • Kitchen
  • Reception

Cardiff Office to Rent

3 Assembly Square is a premier waterfront office development in Cardiff Waterside. The available 7,418-square-foot accommodation is located on the 4th floor. It comes fully furnished with a boardroom, breakout area, and 72 desks in total. The building features a striking full-height glazed atrium, creating an impressive arrival experience and filling the reception area with natural light. Sustainability credentials include a BREEAM Excellent rating and an EPC B rating. Occupiers benefit from raised access floors, chilled beam air conditioning, LED lighting, solar shading, shower facilities, secure bike storage, concierge reception, disabled access, reception services, 24-hour security, and dedicated parking spaces. Additional sustainability features include rainwater harvesting and a sustainable waste management plan. Positioned behind the Senedd and overlooking Roath Basin, 3 Assembly Square occupies a prestigious waterside location within Cardiff's established business district, alongside major occupiers including HBOS, Ofcom, Arup, and the European Commission. The location provides excellent connectivity via road, rail, air, bus, and boat-bus services, making it an accessible and highly desirable business address. Just moments from 3 Assembly Square, Mermaid Quay offers the perfect setting to step away from the office and enjoy everything Cardiff Bay has to offer. With more than 30 restaurants, cafés, bars, and a cinema, it provides an exceptional lifestyle amenity for occupiers.

Contact:

Fletcher Morgan Ltd

Date on Market:

09/06/2026
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More details for 3 Britannia Quay, Cardiff - Office to Rent
  • Matterport 3D Tour

3 Assembly Square, Britannia Quay, Cardiff - 3 Britannia Quay

Cardiff, CF10 4PL

  • Office to Let
  • £23.00 sq ft pa
  • 4,405 - 18,523 sq ft
  • 1 Space Available Now
  • Energy Performance: B
  • Air Conditioning
  • Natural Light
  • Raised Floor
  • Bicycle Storage
  • Kitchen
  • Reception

Cardiff Office to Rent

3 Assembly Square in Cardiff Bay offers a prestigious office environment featuring a full-height glazed atrium and spectacular views over Roath Basin and Cardiff Bay. Designed to an exceptional standard, the building provides suites ranging from 4,405 to 9,154 square feet with a BREEAM rating of “Excellent.” This high-quality building is already home to ITV Wales, Life Science Hub, KPMG, Acuity Legal, and Gambit Corporate Finance. The building is equipped with chilled-beam air conditioning, raised access floors with a busbar system, and services for kitchen fit-out, ensuring flexibility and comfort. A concierge reception enhances the professional experience, while shower facilities, cycle parking, and a dedicated drying room support sustainable commuting options. Security and accessibility have been prioritized with 24-hour access, disabled facilities, and advanced safety measures throughout the premises. Occupiers benefit from generous on-site secure parking plus access to the nearby 1,238-space Pierhead Street multi-storey car park, ensuring convenience for staff and visitors alike. Transit users can walk to Cardiff Bay, which is served by Queen Street Station, linking to the Valley Line services and to Cardiff Central for Main Line services. Located just two minutes’ walk from Mermaid Quay, the property provides outstanding connectivity to the surrounding retail and dining amenities. These comprehensive amenities make 3 Assembly Square an ideal choice for businesses seeking modern, fully serviced office accommodation in a dynamic waterfront location.

Contacts:

Knight Frank LLP

Cooke & Arkwright Ltd

PropertyIndex

Date on Market:

08/01/2024
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More details for Havannah St, Cardiff - Office to Rent

Sovereign Quay - Havannah St

Cardiff, CF10 5SF

  • Office to Let
  • £13.50 sq ft pa
  • 2,540 sq ft
  • 1 Space Available Now
  • Energy Performance: D
  • Air Conditioning
  • Raised Floor
  • Security System
  • Suspended Ceilings

Cardiff Office to Rent

The property comprises a ground floor unit which benefits from attractive views over the Cardiff Bay waterfront. The office has been fitted out to a good standard with meeting rooms and kitchen. It benefits from a specification including: suspended ceilings; raised floor; heating/cooling; ceiling mounted spotlights; kitchen; laminated floor coverings and a WC.

Contact:

Savills

Date on Market:

12/11/2025
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More details for Curran Rd, Cardiff - Office to Rent

Coopers Yard - Curran Rd

Cardiff, CF10 5NB

  • Office to Let
  • £12.50 sq ft pa
  • 1,113 - 3,709 sq ft
  • 2 Spaces Available Now
  • Energy Performance: C
  • Energy Performance: D
  • Air Conditioning
  • Security System
  • Suspended Ceilings
  • DDA Compliant
  • Kitchen

Cardiff Office to Rent

The property comprises a two storey semi-detached building set within a gated courtyard. The property is located in Cardiff’s Enterprise Zone business district, in the city centre. It benefits from being within close proximity of Cardiff Central Railway Station and Cardiff’s main retails areas including St David’s 2 and John Lewis. There is also a wide range of bars and restaurants nearby within Mill Lane and surrounding areas. Nearby occupiers include British Gas, Lloyds Bank, Eversheds Sutherland, Deloitte and Network Rail.

Contact:

Savills

Date on Market:

19/03/2026
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More details for St. Marys House 47 Penarth Road Cardiff CF10 5DJ, Cardiff - Office to Rent

St. Mary’s House - St. Marys House 47 Penarth Road Cardiff CF10 5DJ

Cardiff, CF10 5DJ

  • Office to Let
  • £12.00 sq ft pa
  • 360 - 18,527 sq ft
  • 2 Spaces Available Now
  • Energy Performance: C
  • Air Conditioning
  • Raised Floor
  • Bicycle Storage
  • Security System
  • Suspended Ceilings
  • DDA Compliant
  • Kitchen
  • Reception
  • Roof Terrace

Cardiff Office to Rent

St Marys House is a detached, four storey office building, extending to approximately 18.500 sq ft with a top floor roof terrace. The property has recently been refurbished, including the addition of a new pedestrian entrance onto Trade Street, which leads to a large reception as well as providing access to the on-site amenities, comprising, showers, male, female and disabled W.C.’s as well as the secure undercroft car and cycle parking area. It is located in the heart of Cardiff city centre with views of the impressive Central Square scheme as well as being within a 2 minute walk from Cardiff Central railway Station and transport hub.

Contacts:

Savills

Fletcher Morgan Ltd

Date on Market:

17/07/2025
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More details for Bute St, Cardiff - Co-working to Rent

The Platform - Bute St

Cardiff, CF10 5LE

  • Co-working to Let
  • 250 - 1,000 sq ft
  • Natural Light
  • Security System

Cardiff Co-working to Rent

The Platform, provides inspiring contemporary workspace, set within an attractive Victorian building overlooking Cardiff Bay Railway Station. The suites are available on flexible lease terms and benefit from the following: - 24 hour access - Flexible lease terms - Fully equipped offices - Smart TV's & coffee machine - Superfast WIFI - Mobile phone entry system & booking system - Beer/wine chiller - filled once every couple of months - On site coffee shop & bar for socialising & meetings - Academy Coffee - Communal kitchen on each floor - Bathroom on each floor - Phone lines (optional) The property is located in a prominent location in Cardiff Bay, overlooking Cardiff Bay Railway Station, which provides regular services to Cardiff Queen Street Railways Station. The property benefits from being in close proximity to Cardiff Bay's main leisure facilities in Mermaid Quay, including a number of restaurants, bars and cafe's as well as the Millennium Centre.

Contact:

Savills

Property Type:

Office

Date on Market:

05/02/2026
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More details for 28-29 Mount Stuart Sq, Cardiff - Office to Rent

Aberdare House - 28-29 Mount Stuart Sq

Cardiff, CF10 5FJ

  • Office to Let
  • £20.45 sq ft pa
  • 880 sq ft
  • 1 Space Available Now
  • Energy Performance: C
  • Natural Light
  • Security System
  • Suspended Ceilings
  • Private Toilets

Cardiff Office to Rent

Mount Stuart Square is situated in the heart of Cardiff Bay Cardiff Bay is a thriving business community and desirable residential area lying approximately 1 mile south of the City Centre and within walking distance of The Atlantic Wharf Red Dragon Multiscreen Cinema/Restaurants/Leisure complex, Cardiff Bay Railway Station, Welsh Assembly Building, Wales Millenium Centre and Mermaid Quay with its numerous bars and restaurants. The St David’s five star Hotel and Exchange hotel are also within the vicinity.

Contact:

Michael Graham Young (MGY)

Date on Market:

07/08/2025
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More details for 59 Mount Stuart Sq, Cardiff - Office to Rent

59 Mount Stuart Sq

Cardiff, CF10 5LR

  • Office to Let
  • £21.40 sq ft pa
  • 258 - 1,164 sq ft
  • 1 Space Available Now
  • Energy Performance: E
  • Air Conditioning
  • Natural Light
  • Security System
  • Private Toilets

Cardiff Office to Rent

Cardiff Bay is a thriving business community and desirable residential area lying approximately 1 mile south of the City Centre and within walking distance of The Atlantic Wharf Red Dragon Multiscreen Cinema/Restaurants/Leisure complex, Cardiff Bay Railway Station, Welsh Assembly Building, Wales Millenium Centre and Mermaid Quay with its numerous bars and restaurants. The St David’s five star Hotel and Exchange hotel are also within the vicinity.

Contact:

Michael Graham Young (MGY)

Date on Market:

07/08/2025
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LoopNet UK South Glamorgan Cardiff Office Spaces To Rent in Cardiff Bay, Cardiff, UK

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Office Market Questions About Cardiff Bay

How many office spaces are available in Cardiff Bay?
There are currently 21 office listings available in Cardiff Bay, ranging from 250 sq ft to 18,523 sq ft.
What is the average rent for office space in Cardiff Bay?
Current asking rents average £12 per sq ft, with available space ranging from £9 to £17 per sq ft.
What sizes of office space are available in Cardiff Bay?
Office sizes range from 250 sq ft to 18,523 sq ft, accommodating everyone from small businesses to large corporate occupiers.

Find More Office Spaces to Rent in and Near to Cardiff Bay (Cardiff) on LoopNet

Looking to rent an office in Cardiff Bay? With 21 options available, Cardiff Bay offers diverse workspaces to suit every business need. Whether you’re searching for a private office, spacious open-plan layouts, or a new corporate office head quarters, you’ll find options tailored for startups, established businesses, and remote teams. Many offices include high-speed internet, breakout rooms, 24-hr access, reception services, and flexible lease terms. Discover the perfect environment that supports productivity and innovation today in Cardiff Bay. Offices in Cardiff Bay can be found in the city centre and nearby in surrounding areas with excellent transport links. Search by map to view offices near to Cardiff Bay.

  • Modern Features: Many office buildings are equipped with state-of-the-art facilities, including high-speed internet, on-site parking, and collaborative spaces.
  • Flexible Leasing Terms: Businesses can find short-term and long-term lease options to suit their operational needs.
  • Growing Business Community: The town is home to a mix of industries, including technology, pharmaceuticals, and professional services, fostering a vibrant and collaborative professional ecosystem.

As Cardiff Bay continues to attract investment and development, its office market remains a dynamic choice for businesses looking to balance quality of life with professional opportunity. Whether you're seeking a small workspace or a larger corporate office, Cardiff Bay provides an ideal environment to thrive.

Cardiff Bay (Cardiff) Office Space Rental Market Summary

Key rental metrics for Office Spaces in Cardiff Bay (Cardiff) and comparable markets. This snapshot combines rental rates and typical space sizes to provide a comprehensive view of the rental market.

Market Avg Rent Per Sq Ft Typical Size
Cardiff £14 6,867 sq ft
Barry £11 1,773 sq ft
Taffs Well £10 6,837 sq ft
Cwmbran £7 2,110 sq ft
Caerphilly £8 8,928 sq ft

Rent Analysis for Cardiff Bay (Cardiff) Area

Compare rental rates per square foot across cities near Cardiff Bay (Cardiff). These rates help establish market benchmarks and identify opportunities for tenants and landlords in the commercial rental market.

City Min Rent Per Sq Ft Avg Rent Per Sq Ft Max Rent Per Sq Ft
Cardiff £3 £14 £39
Barry £9 £11 £17
Taffs Well £10 £10 £11
Cwmbran £4 £7 £8
Caerphilly £7 £8 £9

Available Office Space Sizes Near Cardiff Bay (Cardiff)

Overview of Office Space sizes currently available in the Cardiff Bay (Cardiff) area. Understanding the typical size range helps narrow your search based on space requirements and operational needs.

City Smallest Space Typical Size Largest Space
Cardiff 47 sq ft 6,867 sq ft 60,473 sq ft
Barry 50 sq ft 1,773 sq ft 3,500 sq ft
Taffs Well 2,836 sq ft 6,837 sq ft 20,384 sq ft
Cwmbran 83 sq ft 2,110 sq ft 7,043 sq ft
Caerphilly 50 sq ft 8,928 sq ft 19,491 sq ft

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