buildingSMART/bSDD

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The buildingSMART Data Dictionary repository, where we publish the documentation, examples and more. We don't publish here the data, the source code of the bSDD service or the front end of the website.

Stars: 193
Forks: 45
Open beginner issues: 3
Indexed issues: 18

Dominant language: Python
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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18 open issues indexed

units.csv: two Dutch entries duplicate an English unit Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

buildingSMART/bSDD#152 · Opened Sep 12, 2026
units.csv: two units have no QUDT reference while QUDT has them Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

buildingSMART/bSDD#151 · Opened Sep 12, 2026
Add deprecation note for `includeClassProperties` in `api/Class/v1` Open

Difficulty 1/5 1-3 hours Newbie friendliness 74/100

buildingSMART/bSDD#149 · Opened Jul 15, 2026
Improve SemTech support Open

API enhancement todo

buildingSMART/bSDD#146 · 12 comments · 2 reactions · 1 assignee · Opened Apr 24, 2026
Units that combine two parts (like 'kg CO2 eq/m²' or 'EUR/m²') Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

buildingSMART/bSDD#145 · 3 comments · Opened Apr 21, 2026
URI truncated at ~80 chars despite available space (UI issue) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

buildingSMART/bSDD#143 · 1 reaction · Opened Mar 20, 2026
/api/Class/v1 bug on URI of external Properties Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

buildingSMART/bSDD#142 · 2 comments · Opened Dec 18, 2025
Missing units in bSDD api Open

need more info

Difficulty 4/5 3-5 days Newbie friendliness 35/100

buildingSMART/bSDD#140 · 2 comments · Opened Oct 11, 2025
How are IFC Units and IFC data types specified for properties? Open

enhancement todo

buildingSMART/bSDD#138 · 3 comments · 1 assignee · Opened Oct 5, 2025
Struggling to filter properties Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

buildingSMART/bSDD#131 · 4 comments · Opened May 28, 2025
IFC dictionary classes don't have relatedIfcEntity Open

buildingSMART/bSDD#130 · 5 comments · 1 assignee · Opened May 28, 2025
Cannot specify predefined type in IFC Open

enhancement todo

Difficulty 5/5 Over a week Newbie friendliness 25/100

buildingSMART/bSDD#129 · 6 comments · Opened May 13, 2025
Allow adding properties to existing classes in other dictionaries Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

buildingSMART/bSDD#127 · 4 comments · Opened May 13, 2025
Hierarchy missing in ttl output? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

buildingSMART/bSDD#121 · 1 comment · Opened Jan 28, 2025
How to specify the relationship between a class and a pset being modelled as class with type "GroupOfProperties"? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

buildingSMART/bSDD#96 · 1 comment · Opened Jul 10, 2024
Use of Classes.RelatedIfcEntityNamesList in the case of a version-dependent IFC entity mapping? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

buildingSMART/bSDD#95 · 1 comment · Opened Jul 10, 2024
Provide JSON Schema for bsdd Open

enhancement

buildingSMART/bSDD#59 · 1 assignee · Opened Jul 18, 2023
Ontology quick comments Open

buildingSMART/bSDD#31 · 3 comments · 1 assignee · Opened Apr 25, 2022

buildingSMART/bSDD

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