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Residential ROM — Pro (Line‑Items + P10/P50/P90)

Labor/material split, region/year factors, overhead & contingency, plus uncertainty bands.

Assumptions

Triangular variation ±10–15% on materials, labor hrs, labor rate, region index.

Disclaimer: ROM only; not a substitute for sealed estimates/QS. Data as-of 2025-08-27. Always verify assumptions.