This paper presents a discussions of the methodology and results derived from the use of the Rapid Earthquake Damage Assessment System (REDAS) software to estimate the earthquake impacts (physical damage, economic loss, and fatalities) to selected barangays in Davao City from a 1924-scenario Magnitude 8.3 earthquake. REDAS was developed by DOST-PHIVOLCS and its recent module is the impact assessment tool in relation to a program funded by DOSTPCIEERD and CHED to capacitate State Universities and College (SUCs) to learn how to conduct impact risk assessment. The regions assisted were Regions II, III and XI. For Region XI, the participating universities are USEP as lead agency, UP-MINDANAO, DOSCST, SPAMAST and DNSC. Ultimately, it was envisioned that these SUCs will be the local mentors in the region. Moreover, this research project addressed the need for disaster preparedness and emergency response planning, enforcement of the building code and retrofitting of critical structures and assist policy makers. Its overall objective was to estimate earthquake risk using the REDAS software which specifically aimed to develop earthquake exposure database and estimate risks, impacts and calculate loss due to earthquake. The impact assessment required knowing the level of ground shaking from a given earthquake scenario, barangay-level building distribution and availability of fragility and vulnerability curves. All computations were actual survey of selected piloted barangays in Davao city in terms of building characteristics, its coordinates and population.