T This final project was developed based on the terms of reference for the concept and ideas competition for the taman kota intan area, organized by the indonesian institute of architects (iai) jakarta in 2024. taman kota intan, located in jakarta’s old town (kota tua), is part of a cultural heritage area with significant historical value and strong potential for urban space development. situated in a historically rich urban setting, the site requires a design approach that preserves its authentic character while addressing modern community needs. one proposed solution is the development of a mixed-use building that integrates residential, commercial, and public space functions through a contextual architectural approach. the design method involved both primary and secondary data collection through site observation, literature review, and relevant case studies. analysis was based on theories by hamid shirvani, william m. pena, and kathryn h. an infill development strategy was applied to introduce new functions without disturbing the existing historical structures. the concept of transit-oriented development (tod) was also incorporated to enhance connectivity through accessible public transportation and pedestrian-friendly pathways. the proposed mixed-use building in taman kota intan creates a multifunctional space that aligns with the character of the heritage area. by combining contextual architecture and tod principles, the design aims not only to preserve historical values but also to improve urban space quality, support the local economy, and encourage community participation in sustaining the area over time.