The Hidden Design Decisions That Increase Multifamily Construction Costs
- Mar 16
- 3 min read
By Brad Shapiro | Shapiro & Company Architects
Many construction cost overruns in multifamily and affordable housing development are not caused by market conditions alone. In many cases, they originate from architectural and engineering decisions made early in the design process that unintentionally increase construction complexity, material quantities, or labor requirements.
At Shapiro & Company Architects, we focus on thoughtful architectural planning to help developers reduce construction costs while maintaining building quality and resident experience.
Understanding how design decisions affect project budgets allows development teams to make more informed choices during early planning stages.
Building Shape and Structural Complexity
One of the largest drivers of construction cost in multifamily housing is overall building geometry.
Complex building shapes often require additional structural framing, complicated construction sequencing, and increased labor. Features such as excessive cantilevers, irregular footprints, and complicated rooflines may appear relatively small during early design but can significantly increase construction complexity.
Simplifying building geometry allows architects to improve construction efficiency without eliminating architectural character. Well-coordinated building forms often lead to faster construction timelines and lower structural costs.
Structural Spans and Grid Alignment
Structural systems must be carefully coordinated with the architectural layout of the building.
Cost challenges frequently arise when structural grids do not align with unit layouts. Misaligned grids may require longer structural spans, additional beams, or inefficient framing systems.
When structural systems are coordinated early in design, architects and structural engineers can align the grid with unit layouts, plumbing stacks, and mechanical infrastructure. This coordination improves both construction efficiency and system integration.
These types of system-level decisions are often evaluated alongside strategic value engineering approaches in multifamily housing.
Inefficient Unit Planning
Unit planning is another major factor influencing construction efficiency in multifamily buildings.
When kitchens and bathrooms are not vertically stacked, plumbing systems must run horizontally through the building, increasing both construction complexity and long-term maintenance risk.
Similarly, having too many unit types can complicate framing coordination and construction sequencing. Simplified unit layouts often improve construction efficiency while still allowing flexibility for residents.
Architectural planning that prioritizes efficient unit stacking and circulation patterns helps reduce unnecessary construction costs.
Over-Articulated Facades
Architectural expression plays an important role in multifamily housing, particularly in urban or mixed-use developments. However, overly complex façade systems can increase both material costs and construction labor.
Multiple façade transitions, excessive articulation, and complicated waterproofing details often introduce additional installation challenges.
A more effective strategy is to establish a clear façade hierarchy. Higher-quality materials are typically concentrated at pedestrian levels where they have the greatest visual impact, while more economical systems can be used on upper floors.
Durable and simplified façade systems also support long-term building performance.
Inefficient Site and Parking Layouts
Site planning decisions also have a significant influence on project cost.
Parking layouts, building placement, and circulation patterns affect grading requirements, infrastructure systems, and accessibility conditions. When site design and building structure are poorly coordinated, projects may require additional retaining walls, structural adjustments, or utility infrastructure.
Early collaboration between architects, civil engineers, and contractors helps resolve these issues before they affect the project budget.
Architectural Efficiency Drives Cost Efficiency
For developers, architectural design is not only about aesthetics. Efficient building design plays a direct role in controlling construction costs and protecting project feasibility.
By simplifying building geometry, coordinating structural systems, optimizing unit layouts, and designing efficient façades, development teams can significantly improve construction efficiency.
Brad Shapiro is the founder of Shapiro & Company Architects, a Memphis-based architecture firm specializing in multifamily housing, affordable housing, and custom residential design. The firm works with developers throughout the Southeast to deliver cost-efficient, high-performing residential buildings.
