The 26 flats, at sheltered housing complex St John Court in Partickhill in the West End, were refurbished to make them warmer, more modern and energy-efficient.
Lord Provost Sadie Docherty took a tour with tenants to mark the completion. Work, carried out by Loretto Housing Association, included new kitchens and doors, insulation and redecoration.
Lord Provost Sadie Docherty described the transformation as "incredible."
She said: "The residents and their families must be thrilled."
Improvements include a new entrance area, a new warden's office, new accommodation for overnight visitors and redecoration.