The Hangar Annexes Development

Darllen yn Gymraeg

As part of the Swansea Bay City Deal-backed Pembroke Dock Marine project, four Grade II listed annexes to the Sunderland Hangars are currently being renovated into new modern workspaces located at Pembroke Port, and are ideal for the growing renewable industry.

The Pembroke Dock Marine project is creating a world-class centre for marine energy and engineering in close proximity to the Celtic Sea and its significant marine energy resources. And as well as new office and workshop spaces in the Hangar Annexes, we’re supporting the renewable industry further, with the creation of additional fabrication and laydown space, an extended slipway and a new berthing zone.

The Hangar Annex development started with engaging with the local community on the building names and as a result, each of the newly developed buildings has a name with a special connection to Pembroke Dock’s fascinating history.

The renovation of the properties is being carried out by contractor R&M Williams who we got to know in our regular Meet the people of Pembroke Port series at the beginning of the project.

As we follow the transformation of the Hangar Annexes from start to finish, we look forward to the completion playing an integral part of the Pembroke Dock Marine project.

The offices and workshop spaces will be available to let from early 2023 and further details can be seen online or in the Hangar Annex brochure. To discuss further, please get in touch with Sharon Adams, Commercial Manager by submitting an enquiry form or calling +44(0)1646 796152.

Catalina House

760m2 two storey office and light workshop space

R & M Williams have demolished the previous building in order to upgrade the switch gear, which will improve safety and reliability to the Port’s site.


Falcon House

181m2 of new office space on the ground floor

The roof has now been demolished and the building is being prepared structurally ready for its new roof.

Building before renovation Demolition of building

Erebus House

Ground floor office space with ramped access 169m2

A new roof and man safe system has been put into place, the foundation has been strengthened by underpinning, new copings have been installed and concrete repairs to structural columns and beams have been complete.

To prepare for the Crittal windows, structural openings have been formed and new window subframes have been installed in readiness.

Building before renovation works Building under renovation

Oleander House

Two storey office accommodation 654m2 in total, due for completion end 2022

A new roof has been installed on the annex as well as the man safe system. Foundations have been formed for the new glass link building with a steel frame erected. Internally, repairs to the concrete have been completed along with the installation of Helifix to the walls in readiness for plasterboard.

The first fix of mechanical and electrical systems have been completed as well as the installation of the new surface water draining system to the new outlet.

New Crittal windows have been installed along with the subframes, new copings and sills.

The preparation for lime rendering is currently underway.

Building during renovation Building during renovation


View the full details of each property along with CGIs and the stories behind the names >

Download brochure >


The Hangar Annexes development is part of the Swansea Bay City Deal-backed Pembroke Dock Marine project which is funded by UK Government, the Welsh Government, the public and private sector. It is also part funded by the European Regional Development Fund through the Welsh Government.

Swansea Bay City Deal

Pembroke Dock Marine logo


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