Innovative Cost Modeling for Sustainable Modular Construction in Urban High-Rise Developments: A Quantitative Comparison of Traditional vs. Modular Methods in Post-Construction Lifecycle Costs

Project Abstract

This study advances a comprehensive cost modeling framework to evaluate post-construction lifecycle costs of sustainable modular construction within urban high-rise developments, offering a quantitative comparison with traditional construction methods. The research integrates financial, environmental, and risk-based dimensions to produce a holistic view of total cost of ownership (TCO) over the building’s anticipated life span, including initial capital expenditure, operation and maintenance, utilities, decommissioning, and end-of-life scenarios. A mixed-methods approach combines empirical data from pilot projects, industry cost databases, and published life cycle cost (LCC) benchmarks to calibrate and validate the proposed models. The core objective is to identify cost drivers that influence long-term financial performance, quantify the uncertainty associated with modular assemblies, and determine the conditions under which modular strategies yield superior lifecycle value in dense urban contexts. The research develops a modular cost taxonomy tailored to high-rise configurations, capturing discrete components such as factory-controlled fabrication, on-site assembly logistics, climate-responsive envelope systems, and modular MEP (mechanical, electrical, plumbing) integration. It introduces an advanced stochastic simulation framework that propagates uncertainties in material prices, labor rates, schedule volatility, and performance degradation to produce probabilistic TCO distributions. Sensitivity analyses reveal the relative impact of design choices, supply chain reliability, and energy performance targets on lifecycle costs. The study also embeds sustainability metrics, including embodied carbon, energy use intensity, and recyclability scores, to examine potential trade-offs between economic and environmental objectives. A decision-support tool is developed to enable practitioners—developers, quantity surveyors, and project managers—to compare modular versus traditional builds under varying urban constraints such as height restrictions, site availability, and regulatory approvals. Data collection encompasses case-study analyses of recent urban high-rise projects employing modular systems, supplemented by interviews with industry experts and cost estimators to capture tacit knowledge not present in published sources. The analytical framework combines cost estimation spreadsheets with Bayesian updating techniques to refine prior assumptions as new data emerges. Results are expected to show scenarios where modular construction reduces lifecycle costs through shorter construction durations, improved supply chain predictability, and better energy performance, while also highlighting contexts where higher upfront modular premiums or integration challenges may offset long-term savings. The research contributes to best-practice guidelines for cost modeling in modular high-rise developments, including recommended data standards, risk registers, and reporting formats that support transparent economic evaluation for stakeholders. Policy implications include incentivizing modular innovations and standardization to accelerate adoption, while project-level recommendations address how to align contractual structures, performance guarantees, and maintenance planning with lifecycle cost optimization.

Project Overview

What This Project Is About

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The project compares two ways of building urban high-rise projects: traditional construction and modular construction (building parts off-site and assembling on-site). It uses simple cost tracking over the building’s life, not just initial price, to see which method saves money and reduces waste over time. Students will learn how the costs differ when factors like speed, quality, and maintenance are included.

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The Problem It Addresses

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Objectives of the Project

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1. Compare initial construction costs between traditional and modular methods.
2. Evaluate post-construction lifecycle costs, including operation, maintenance, and end-of-life disposal.
3. Assess environmental and social impacts tied to each method in simple terms.
4. Develop a clear cost model that can be used for future project planning.

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What You Will Do Step by Step

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1) Review basic concepts of traditional and modular construction. 2) Gather example data on costs from case studies or public reports. 3) Build a simple, transparent cost model that tracks construction and lifecycle costs. 4) Input data for a hypothetical high-rise project and compare results. 5) Interpret which method offers better value under different scenarios. 6) Prepare a one-page summary of findings for decision makers.

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Expected Outcome

A straightforward, easy-to-use cost model that shows when modular construction is more cost-effective over the building’s life, along with practical guidance for choosing between methods.