What it does

This skill automates the tedious task of auditing construction bill of quantities (Meetstaat) for architects and project managers. It processes CSV exports of measurement states to identify calculation errors, missing data, and non-standard units (e.g., mismatched m²/m³). By using a specialized Python-based logic, it ensures that every line item is mathematically sound and formatted according to industry standards.

Why use this skill

Manual verification of thousands of line items is prone to human error. This skill is superior to simple prompting because it performs precise floating-point arithmetic checks and structured data validation that LLMs often struggle with. It categorizes costs by chapter (post number prefixes), flags inconsistencies between unit prices and totals, and provides a clean audit trail.

Supported tools

• Python 3 for data processing
• CSV parsing for Excel/Calc exports
• Standard construction unit sets (m1, m2, m3, st, kg, sog, vh, pm, etc.)

Output formatting

The skill generates a detailed validation report including a flagged CSV highlighting specific errors, chapter-by-chapter subtotals, and a summary of unpriced or problematic items.