This study presents a field application framework for remote safety monitoring of buildings during demolition using Total Station measurements and prism targets. A large-scale demolition site consisting of two blocks and eight buildings was selected, and five buildings with stable line-of-sight were monitored. Target prisms installed at designated floors were repeatedly observed to obtain vertical-transverse (VT) displacement components, from which building tilt (VT-corrected) and interstory drift ratios were derived as primary safety indices. To address high-frequency fluctuations caused by construction stage changes and measurement conditions, representative values were summarized for long-term trend interpretation. The maximum VT-corrected tilt was 0.00199 (B203) and 0.00197 (B101), indicating that all monitored buildings remained within the reference level of 1/500. The maximum interstory drift ratio was 0.00586 (B101), which remained below the comparison criterion of 0.010 adopted for monitoring. In addition, the maximum VT displacement at the lowest installed prism reached 0.04422 m (B202), approaching but not exceeding the comparison criterion of 0.045 m. No monotonic accumulation toward a single direction was identified over the monitoring period. The results demonstrate that Total Station based remote monitoring can provide quantitative, stage-by-stage safety information during demolition under constrained site access conditions.