How-To & Guides 7 min read • Mar 22, 2026

Constructability Reviews: How Early Subcontractor Review Prevents Costly Change Orders

How formal constructability reviews eliminate change orders and schedule delays. Clash detection, structural clear heights, envelope flashing, and MEP coordination.

Change orders during active construction cost an average of 3 to 5 times more than catching the same issue on paper. A formal constructability review brings seasoned field superintendents and trade subcontractors to the table before plans are finalized to identify real-world conflicts.

Top Conflicts Uncovered in Constructability Reviews

Discipline Conflict Field Reality Uncovered Cost / Delay Avoided
Gravity Sanitary Lines vs. Structural Grade Beams Plumbing slope conflicts with foundation beam depths; requires engineered beam sleeves before pour Prevents $15,000+ concrete core-drilling and structural repair
Fire Sprinkler Mains vs. HVAC Main Trunk Ducts Main 24" supply duct and 4" fire riser fighting for the same 18" ceiling plenum clearance Avoids field duct offsets that choke airflow balance
Roof Scupper Overflows vs. Structural Steel Joists Secondary emergency overflow drainage pipes aligned directly into structural steel columns Eliminates roof drainage re-piping after drywall install
Door Swing Clearances vs. Electrical Panels NEC 3-foot dedicated clearance violated by interior door swing paths Eliminates failed final electrical municipal inspections

Frequently Asked Questions

How much does a constructability review cost?

Typically included in standard general contractor preconstruction services ($15,000 to $35,000 depending on project scale), frequently saving 5x to 10x that amount in avoided change orders.

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