Twenty-nine practices — sixteen in St Peter Port, weighted toward building surveyors and architectural designers rather than engineers. Thirteen RICS-regulated; three CIAT-chartered; one RIBA firm. Eighteen offer project management, six quantity surveying. The oldest dates to 1947, the newest 2015. —
Fifteen practices — most doing architecture as well as surveying, weighted to St Peter Port (7), and eight RICS-regulated.
Eight firms — six RICS-regulated, three pure quantity surveyors; the rest dual-discipline with architecture or building surveying.
Five entries — Marquis Surveys (1997), the only pure-play geomatics firm in the Channel Islands, three mixed practices, and the Cadastre.
One firm per niche, picked for editorial depth.
Chartered building surveyors and project managers — surveys, valuations, design
RIBA & RICS chartered architects; first to deliver a BREEAM-rated building
Chartered engineers: structural, civil, geotechnical, environmental services.
Tagged in Architects & Surveyors but not in one of the specific niches above.