Fairwinds land, which includes everything other than parkland and privately owned property, is owned and managed by Fairwinds corporation.
This privately managed property includes the golf course and trails.
Various maps of the area that may be of interest:
Neighbourhood Map from Fairwinds Developers
Fairwinds – Google Maps at Sept 2019
RDN Electorial Area E Community Parks
Regional District Nanaimo Fairwinds Beach Access Maps – note: yellow squares are parks and red E’s are designated beach accesses (not all of which are maintained).