Construction.
As it should be
Est. 1991.
Complex new build, refurbishment, structural alterations and heritage restoration. For the buildings, the people and the communities that deserve it done properly.
An experienced contractor, built on 30+ years of complex project delivery
Sinden delivers construction, refurbishment and heritage restoration projects up to £50m. We work across the public and private sectors for education estates, healthcare trusts, heritage bodies, defence clients and local authorities.
Experienced, agile and directly involved. Our directors stay close to every project. So decisions get made quickly and your project stays on track.
Security clearance held. Experience across some of the most sensitive and demanding project environments in the country, including the Houses of Parliament.
0
net debt. Financially stable, with a strong balance sheet & net cash position
£1.9m+
social value generated across our portfolio in 2025
20+
active framework appointments
19%
of our people in earn and learn positions, against an industry average of less than 3%
9
sectors delivered across London and the South East
New build and refurbishment across nine sectors
Sinden works across nine sectors, delivering complex new build, refurbishment, structural alterations and heritage restoration projects for clients who value quality, programme certainty and a contractor with the experience to get it right.
Featured projects
St Albans Cathedral
An award-winning heritage project combining modern functionality with meticulous conservation and craftsmanship
Weldon Heart Community Hub and Wellbeing Pavilion
Delivering sustainable community facilities with a BREEAM Outstanding target
28 Commercial Street
Delivering a high-spec office and community building on a complex, logistically constrained site
Sutton Life Centre
Transformation of a community facility into a purpose-built SEND Cerntre
Frameworks we’re
proud to be on
What our clients say
about working with us
"The Cathedral remained open to the public for the duration of the works and the site team were well mannered and accommodating towards the Cathedral’s needs. Sinden’s site agent and wider management team worked closely and collaboratively with Simpson & Brown and the client throughout. Their attention to high quality finishing and client aftercare service has been warmly received and appreciated by both ourselves and the client team."
"Sinden have approached our work on the Brook Theatre with real care, intelligence and professionalism, fully understanding the responsibility that comes with a landmark building of this significance.
From the outset, they recognised that this project is not just a refurbishment, but the safeguarding of a much‑loved cultural home for Medway. Their team has worked collaboratively and confidently, always solutions‑focused and technically assured, while showing genuine sensitivity to the building’s heritage."
"Sinden have delivered a high quality, well-managed and safe project on the Estate. They were receptive to change, used some innovative practices to respond to the challenges and constraints of the working environment. They worked closely with our numerous stakeholders, keeping them on side and ensuring support of the project. Thank you!"
Insights from Sinden
Sector news, project thinking and practical guidance from a construction team with 30+ years of experience.
