COST DATA
CWICR catalog
55,719 standardised construction cost positions across 11 regional markets. Full resource breakdowns. Semantic and full-text search. Updated on a rolling basis.
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What is CWICR?
CWICR (Construction Work Item Cost Reference) is a hierarchical cost-coding standard developed for use across global construction markets. It provides a common vocabulary for construction work items, enabling consistent comparison of costs across projects, markets, and time periods.
ZRO uses CWICR as the primary schema for all estimation work. The database contains 55,719 verified positions across 11 markets. Each position is independently sourced, reviewed against current market pricing, and attributed to its source.
Hierarchy and structure
CWICR positions are organised in a four-level hierarchy. Every BOQ in ZRO maps to this structure.
01 Substructure
01.01 Foundations
01.01.010 Reinforced concrete strip foundation, 600mm × 300mm
01.01.020 Reinforced concrete pad foundation, 1200mm × 1200mm × 450mm
01.02 Ground-bearing slabs
01.02.010 Reinforced concrete ground slab, 150mm, C25/30
01.02.020 Reinforced concrete ground slab, 200mm, C30/37
02 Frame
02.01 Concrete frame
02.01.010 Reinforced concrete column, 300mm × 300mm, C30/37
02.01.020 Reinforced concrete suspended slab, 200mm flat, C25/30
02.02 Structural steel
02.02.010 Structural steel column, UC 254×254×89 grade S275
02.02.020 Structural steel beam, UB 457×191×74 grade S275Position schema
Every position in the database carries the following fields:
{
"code": "02.01.020",
"title": "Reinforced concrete suspended slab, 200mm flat, C25/30",
"unit": "m²",
"market": "DE",
"currency": "EUR",
"labour": 34.20,
"material": 58.80,
"equipment": 7.40,
"overhead": 12.60,
"totalUnitRate": 113.00,
"lastVerified": "2026-01"
}Regional coverage
includeStale=true.Search and retrieval
ZRO offers two complementary search modes:
Both modes are available simultaneously in the BOQ editor search panel. Semantic results are ranked by cosine similarity; full-text results by text relevance score. Results from both modes are merged and deduplicated.
Update cadence and migrations
Regional rates are reviewed on a rolling basis — approximately one to two markets per month. Updates are distributed as versioned SQL migration files.
# Pull the latest update
git pull
# Apply new cost data migrations
npx drizzle-kit migrate
# Verify position count
curl /api/health | jq '.cwicrPositions'