The year-on-year inflation rate of the Prime Building Cost Index (PBCI) was 5.1% in September 2026, up from 4.6% in August 2026.The monthly change rate for September 2026 was 0.03%.According to the Ghana Statistical Service, building inflation remains low, despite an increase in September 2026.The drivers of the September inflation were plant and equipment costs that went up 19.1% over the year.At the group level, the Labour group inflation rate recorded a year-on-year inflation rate of -3.2% in September 2026, down from -2.9% in August 2026.The Material group recorded a year-on-year inflation rate of 6.5% in September 2026, up from 5.8% in August 2026, while the Plant group recorded a year-on-year inflation rate of 19.1%, up from 17.9% in August 2026.At the sub-group level, Reinforcement recorded the highest year-on-year inflation rate of 29.0%, while the sub-group Steel recorded the lowest year-on-year inflation rate of -8.8%.Fourteen sub-groups out of the 23 sub-groups recorded inflation rates above the national average of 5.1%.The year-on-year inflation halved over the year but has risen since March 2026.What the September figures mean to householdsFor households, structural inputs cost less than a year ago, as cement inflation stood at −6.1% and steel −8.8%.Finishing and installation inputs, however, cost more, with plumbing +27.5%, glazing +20.6%, and tiles +9.2%.The overall building costs are 5.1% higher than in September 2025.