Now called simply Barnabas, the handsome Edwardian church has been split into 21 flats, some with 18ft-high ceilings, chunky rafters, stained-glass windows, original stone arches and columns.
Intelligent interior redesign avoids clumsy corners, while 30 new windows in original style have been added to retained heritage features.
Flats with up to three bedrooms and a mezzanine level have simple modern finishes, a counterfoil to characterful ecclesiastical architecture.
This smart new address is part of a leafy garden suburb near Hampstead Heath, with a station on the Northern line. From £485,000. Visit bowerandbarnabus.co.uk or call 020 3143 8200.
A divine conversion: gothic-style flats at Barnabas, where prices start from £485,000