We successfully completed the Revitalise 250 project at Holy Trinity Clapham, delivering the sensitive extension, refurbishment and internal fit-out of the Grade II* listed church, which first opened in 1776. The 82-week programme transformed key areas of the historic building while preserving its architectural character and improving its facilities for a growing congregation and the wider community.
The project comprised new extensions to the north and south elevations, extensive refurbishment of the Narthex, Nave, Gallery and Chancel, and the installation and upgrading of mechanical, electrical and plumbing (MEP) services throughout, together with hard landscaping to integrate the new extensions with the surrounding site.
Situated at the entrance to Clapham Common, the church occupies a prominent public location with high pedestrian footfall. It also holds considerable historical and cultural significance through its association with William Wilberforce and the Clapham Sect, who worshipped there while campaigning for the abolition of the slave trade. Both factors called for a carefully managed approach to construction, heritage conservation, public safety and stakeholder engagement.
The first section of the works involved a new north extension from ground to second-floor level and a new south extension from basement to first-floor level, both with new MEP installations and associated building works.
Particular attention was given to the interfaces between the new extensions and the existing fabric, including the integration of building services and the coordination of specialist trades, so the new structures connect successfully with the historic church while respecting its architectural significance.
The second section focused on the church's principal internal spaces, the Narthex, Nave, Chancel and Gallery, with new decorative finishes, upgrades to existing MEP installations and the integration of services with the new extensions. Given the building's Grade II* listed status, construction methods and sequencing were coordinated to retain and protect historic features throughout.
The works were delivered in coordinated phases to manage the interface between the new extensions and the internal refurbishment. External envelope and structural works were prioritised to allow internal fit-out to follow within protected areas. Regular progress reviews and short-term lookahead planning supported coordination between trades, specialist contractors and the wider consultant team, including Hanslip & Co Architects and the heritage consultants.
The programme also accommodated the church's services, community activities and special events. Separate temporary accommodation cabins kept church operations running during construction, and disruptive activities were planned in consultation with church leadership.
A significant milestone was the church's 250th anniversary. We worked closely with the client, consultants and site team to prepare the building for partial possession, enabling Holy Trinity Clapham to host anniversary services, music, prayer and community activities, with the necessary areas ready on time while maintaining safety and quality standards.
We worked closely with the client, architects and heritage consultants to make sure construction respected the building's historic fabric and complied with the relevant listed building consents.
Public protection was a priority throughout. Secure hoardings, clear wayfinding signage and controlled access and egress kept construction separate from church users and the public, and site logistics were regularly reviewed around pedestrian movements, church services and community events. The project was delivered with no reported incidents involving site operations and public safety.
The completed Revitalise 250 project delivered new north and south extensions, refurbished principal spaces and upgraded building services, enhancing the church's facilities while preserving the character of this important Grade II* listed building. It gives Holy Trinity Clapham improved facilities for its religious, cultural and community life, and keeps this historic building a valued part of Clapham for generations to come.
CGA is delivering the full refurbishment and structural enhancement of the Worshipful Company of Dyers at 13 Dowgate Hill, a historic building that remains occupied throughout. New steelwork, a new steel stair core and a bespoke external access stair are being installed while the building's heritage character is preserved.
Read MoreCGA during the pandemic undertaken in a controlled method the refurbishment and upgrade of Mechanical, electrical and life support system to St Andrews by the Wardrobe. The church was first erected by Christopher wren in 1695.
Read MoreSt Augustine’s Church is part of a regeneration project in Hammersmith. The interior of the church has been transformed into a more attractive and light-filled building.
Read More
