Dataset · Hugging Face

ogasurfproject/jccdb-observations

Name: jccdb-observations
Creator: ogasurfproject
License: cc-by-4.0
Keywords: language:ja, language:en, license:cc-by-4.0, size_categories:100K<n<1M, format:parquet, modality:text, library:datasets, library:dask, library:polars, library:mlcroissant, region:us, construction, construction-cost, japan, open-data

JCCDB v5.1 observation layer (Japan) In one paragraph. JCCDB (Japan Construction Cost Database) is an open dataset of Japanese construction and renovation costs, created by Toshikatsu Oga (大賀俊勝), who has worked on construction sites for 30 years, and published by The HORIZONs Co., Ltd. under CC BY 4.0. Version 5.1 (2026-10-04, DOI 10.5281/zenodo.23133068; all versions 10.5281/zenodo.22127751) holds 526,128 records: 95,403 line items and 430,725 observations from 88 Japanese… See the full description on the dataset page: https://huggingface.co/datasets/ogasurfproject/jccdb-observations.

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Author / organization	ogasurfproject
License (as declared)	cc-by-4.0
Downloads	194 (as reported by Hugging Face)
Likes	0
Created	26 September 2026
Last updated at source	4 October 2026

constructionconstruction-costjapanopen-datapublic-workslabor-rates

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