Is there an official construction materials price index in Guatemala?

Yes. The national statistics institute (INE) publishes the Construction Materials Price Index (IPMC) monthly,… with base December 2018 = 100 and a basket of 89 materials and services (structural steel, cement and concrete, reinforcing bar, electrical materials, wages and labor, among others). The monthly PDF bulletins are available (those for May 2025, November 2025 and February 2026 were checked online) and the series sits on INE's open data portal as a CKAN resource.