Commercial contractor and office refurbishment specialist

Est. 1991.

Great workplaces help businesses perform at their best. We deliver the quality and certainty to make that possible.

Sinden delivers office and industrial construction, fit out, refurbishment, decarbonisation and retrofit projects across London and the South East —for developers, occupiers and asset managers.

More occupiers are choosing refurbishment and retrofit over new build, driven by sustainability goals, lower costs and a more straightforward route to delivery. When a project moves beyond a standard fit out into something more complex, our experience brings clarity on programme and cost. Where buildings are occupied, we plan around the people using them, keeping disruption to a minimum.

Silbury House, recognised as the most sustainable building in Milton Keynes

Quadrant House, shortlisted for the Architects’ Journal Retrofit & Reuse Awards across Adaptive Reuse, Future Reuse and Decarbonisation

A commercial refurbishment contractor built around the needs of your business and people.

Combining Tier 1 process rigour with genuine agility to deliver office and industrial construction, fit out, refurbishment, decarbonisation and retrofit projects.

From fit out to complex refurbishment

As commercial projects move beyond a standard fit out into something more involved, our experience gives clients clarity and certainty around programme and cost, whatever the complexity.

Occupied offices kept operational throughout

We plan and phase commercial refurbishment projects carefully around the people using the building, so businesses keep running, people stay comfortable and the project stays on programme.

Retrofit and decarbonisation that works harder for occupiers

We help commercial clients make their spaces more efficient and sustainable — including to BREEAM and WELL standards where required — with a focus on outcomes that genuinely improve how a building performs.

A broad and proven commercial portfolio

Our commercial experience covers office fit out, hotel refurbishment, hospitality and industrial workplace projects, giving you confidence that whatever the project type, we have delivered it before.

Organisations we’re proud to partner with

Featured Commercial & Workplace projects

What our clients say about working with us

Marc Watts / Spectrum VR

London Road

"I don’t think I could express how easy Sinden’s staff are to work with, from the outset the enthusiasm, attention to detail and willingness to meet at anytime either on-site or at their offices to discuss any detail, however small. This helped put our minds at rest and ensure that the whole journey was as smooth as I think anyone could ask, their site manager on our project, Glenn is a credit to them."

Marc Watts / Spectrum VR

London Road

Alice Spanton / Senior Development Manager, Peabody

Fish Island

"The Trampery fit out was at times a difficult project and I was impressed with the way the Sinden Team dealt with the challenges and looked to be proactive to overcome the issues particularly in dealing with a third party who were not technically privy to the contract. The site team were also very professional in dealing with the existing residents on the development whilst the works were on going and dealt promptly with any issues that arose during the construction period."

Alice Spanton / Senior Development Manager, Peabody

Fish Island