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All Journal Civil Engineering Dimension
Perdana Miraj
Delft University of Technology
Civil Engineering, Building, Construction & Architecture

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Optimizing Time and Cost Efficiency in Housing Construction using a Lean Construction Approach Gunawan Gunawan; Kukuh Handayani; Mohammed Ali Berawi; Mustika Sari; Siti Rahma Utami; Perdana Miraj
Civil Engineering Dimension Vol. 28 No. 2 (2026): SEPTEMBER 2026
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.28.2.249-263

Abstract

Efficient time and cost control is critical in housing construction, particularly where workflow disruptions and non-value-added activities reduce project performance. This study examines the Green Royal Housing Project in Jakarta, Indonesia, to evaluate how Lean Construction can improve delivery through waste identification, activity classification, and workflow planning. Project documents, site observations, and interviews with five key stakeholders were used to classify 87 construction activities into value-added, essential non-value-added, and non-value-added categories. The analysis identified 21 non-value-added activities, mainly related to waiting, unnecessary processes, transportation inefficiencies, and inventory problems. Their elimination reduced the projected duration from 83 to 74 weeks. An LPS-informed planning framework was then used to support lookahead planning, constraint screening, and weekly work commitments. Because a four-week delay remained, a CPM-based crashing scenario was evaluated separately as a post-lean acceleration option, reducing the duration to 66 weeks. The findings clarify Lean Construction's role in improving housing project efficiency.
Co-Authors Gunawan Gunawan Kukuh Handayani Mohammed Ali Berawi Mustika Sari Siti Rahma Utami