JCCDB: Japan Construction Cost Database with 65,729 Line-Items

65,729 construction cost line-items organized across 398 categories form a public, structured taxonomy for the Japanese market. The Japan Construction Cost Database (JCCDB) is the first openly published, machine-readable taxonomy of construction and renovation cost items. It was created by ogasurfproject and last updated on 2026-05-28.

Use Cases

• Standardizing cost estimation vocabulary based on the structured taxonomy of 65,729 line-items.
• Developing construction cost analysis tools based on the categorized item names and units.
• Training machine learning models for construction project planning based on the hierarchical category structure.
• Conducting market research on construction materials and services based on the comprehensive item list.

Strengths

• Contains 65,729 distinct construction cost line-items.
• Organizes items into a structured taxonomy of 398 categories.
• Described as the first openly published, machine-readable taxonomy for the Japanese construction market.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset contains item names, categories, and units only, with no price data.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

ogasurfproject

Freshness

Last updated 2026-05-28 04:28:40; freshness should be verified.

Geography

Japan