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Community & Business Groups

Linked Building Data Community Group

This group brings together experts in the area of building information modelling (BIM) and Web of Data technologies to define existing and future use cases and requirements for linked data based applications across the life cycle of buildings. A list of recommended use cases will be produced by this community group. The envisioned target beneficiaries of this group are both industrial and governmental organisations who use data from building information modelling applications and other data related to the building life cycle (sensor data, GIS data, material data, geographical data, and so forth) to achieve their business processes and whom will benefit from greater integration of data and interoperability between their data sets and the wider linked data communities. For example, benefit may be obtained by publishing and combining localised data on new cheaper building materials, energy efficient building devices and systems, along with real time data on weather patterns, energy prices and geodata. By making this data available to applications, they will be better able to support decision makers during the whole of the building life cycle, which includes design, construction, commissioning, operation, retrofitting/refurbishment/reconfiguration, demolition, and recycling of buildings. The group will engage with these beneficiaries through surveys and events organised in conjunction with the affiliated workshop series on Linked Data for Architecture and Construction (LDAC).


Group's public email, repo and wiki activity over time

Note: Community Groups are proposed and run by the community. Although W3C hosts these conversations, the groups do not necessarily represent the views of the W3C Membership or staff.

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Modelling properties in Built Environment using ISO 23386/ 23387

The W3C Linked Building Data Community Group (W3C LBD CG) enjoyed an interesting presentation by Lars Christian Fredenlund on key characteristics of new standards related to property modelling of product data in the construction industry namely ISO 23386 and ISO 23387. See the minutes to access the slides and content discussed presented at the teleconference 7 May 2020.

The W3C LBD CG holds bi-weekly meetings dedicated to topics on modelling data and information in the built environment. If you are interested in this topic become a member by clicking the “join group” button.

Presentation of RealEstateCore

The W3C Linked Building Data Community Group (W3C LBD CG) enjoyed an interesting presentation by Karl Hammar, Erik Wallin and Mads Holten Rasmussen on the current status and future development of the RealEstateCore ontology and initiative. See the minutes to access the slides and content discussed, which was presented at the teleconference 23 April 2020.

The W3C LBD CG holds bi-weekly meetings dedicated to topics on modelling data and information in the built environment. If you are interested in this topic become a member by clicking the “join group” button.

Regular Meeting Schedule of Group

The regular teleconferences held by the W3C Linked Building Data Community Group (W3C LBD CG) will be scheduled in a regular pattern. Starting 22 September 2020, the meetings will take place in a bi-weekly mode at a fixed time and day of the week. Every second Tuesday at 15:00-16:30@UTC, 17:00-18:30@CEST, 16:00-17:30@BST, 08:00-09:30@PDT, 23:00-00:30@CST. During winter time accordingly, e.g. 17:00-18:30@CET the group will hold its meetings. The calendar invite and connection details are distributed via the internal email list ( only accessible for W3C members). Only members and invited experts will be allows to attend the meetings.

We hope to welcome you soon in one of our Telcos – Feel free to join the group via the “join this group” button.

LDAC 2020 — Linked Data in Architecture and Construction Week — 15-19 June — Call for Papers


We hereby invite you to submit your paper to LDAC 2020 – 8th Linked Data in Architecture and Construction Workshop, which will take place in Dublin, Ireland.

LDAC 2020 is organized by the Adapt Centre, Trinity College Dublin.    


Paper submission: March 13, 2020

Notification of acceptance for paper submissions: April 17, 2020

Summer school registration: May 12, 2020

Submission deadline for revised articles: May 20, 2020

Workshop registration deadline: May 28, 2019

LDAC Summer School: June 15-16, 2020

LDAC Workshop: June 17-19, 2020

For more information regarding the event, please visit the LDAC 2020 website:

We kindly request that you share this Call for Papers with potentially interested colleagues. 

Sorry for cross-posting and directly emailing.

Best regards,

The LDAC organising committee

Local organization team, 8th Linked Data in Architecture and Construction Workshop

LDAC 2019 — Linked Data in Architecture and Construction Week — 17-21 June 2019

This year the LDAC Committee, with the support of the Linked Building Data Community, hosted the first Summer School of LDAC alongside the 7th LDAC Workshop, in a week-long programme hosted by the Design and Computation Group of the Faculty of Architecture – University of Lisbon. The event took place at the Beta-i Hub in Lisbon, between June 17-21, 2019.

The first Summer School of LDAC was dedicated to the application of semantic web, linked data and web of data technologies in architecture, engineering and construction (AEC). Considering the growing interest in these technologies from the AEC industry and research institutions, this Summer School provided a starting point for participants that are new to the topic entirely and the opportunity to enhance the understanding and overview of implementations and approaches in the built environment for participants that wished to deepen their knowledge in this field.

With a mixture of lectures, personal interactions with experts in the field, hands-on exercises and coding challenges, the Summer School gave participants the opportunity to explore the possibilities of the semantic web, linked data and web of data technologies for their own research and practice needs at their individual pace and depth.

An integral part of the summer school was the application and strengthening of newly learned knowledge from lectures in practical research work: The Coding Challenge. The goal was for participants, grouped in interdisciplinary teams, to address and define real-world problems. The coding challenge prize was generously sponsored by Stardog.

You can find the tutorials and some presentations at the Summer School’s GitHub page:

The 7th LDAC Workshop followed usual set up with keynotes by Ruben Verborgh and Ora Lassila, plenty plenary sessions dedicated to research in LBD, the technical track dedicated to W3C LBD Community Group content, and the industry track with presentations from LBD applications in companies from the AEC industry.


LDAC 2019 website:
Summer School website:

Conference proceedings: CEUR-WS proceedings Vol-2389
LDAC 2019 report: (forthcoming)
LDAC 2019 videos: (forthcoming)

Coding Challenge Teams:

Topic: Publish Smart Home Sensor Data using SWT
Participants: Ali Kücükavci, Andreas Bøving, Christian Frausing, Jonas Bacher

Topic: Publish Smart Home Sensor Data using SWT
Participants: Robert Lensing, James Allan, Pierre Bonnamy, Christian Nothstein, Ville Kukkonen

Topic: Integrate Heterogeneous Building Product Data
Participants: Ivan Stefanov, Marc Grooters, Sigve Pettersen

Topic: Integrate Heterogeneous Building Product Data
Participants: Jacky Chi Ho Lau, Chingwah Loh, Guillaume Picinbono, Deepthi Sundaram, Katja Breitenfelder

Topic: Automated Ontology Matching in the Built Environment – Winning Team
Participants: Wendelin Sprenger, Ranjith Soman, Madhumitha Senthilvel, Teemu Matasniemi

Topics: Extraction and Semantic Annotation of Geometry Data from IFC
Participants: Andre Hoffmann, Christian Thiele, Richard Pinka, Christoph Maurer

Topic: Generation of 3D Virtual Reality Scene from Linked Building Data
Participants: Julian, Kevin, Hervé Provost

Topic: Open Data Model for AEC Industry
Participants: Ozan Tasli, Meiling Shi, Jeroen Werbrouck, Xinyi Du, Ladislava Fialka

NoA LDAC 2019 — Workshop On Linked Building Data And Semantic Web Technologies — 13-15 May

The University of Florida will be hosting the first North American version of the LDAC Workshop on Linked Building Data and Semantic Web Technologies. The workshop will be broken into the three tracks: linked building data, semantic web technology, and IoT and Smart City applications. The purpose of the N.A. LDAC is to increase the reach and expand the efforts of the Linked Building Community. The WLS2019 event will take place in Orlando, Florida, from 13 to 15 May 2019.

Submit and Register
We wish to strongly encourage members of the W3C LBD Community Group to participate!

Seeking Volunteers and Reviewers
If anyone is interested in volunteering with the workshop or reviewing papers, please contact

LDAC 2017 — 5th Linked Data in Architecture and Construction Workshop — 13-15 November

This year’s LDAC workshop takes place at the University of Burgundy, in Dijon (France). In this workshop, the main aim is to evaluate the current status of the different available ontologies to capture building data. This includes many of the ontologies currently under development in the W3C Linked Building Data Community Group. Aside the development and usage of these ontologies, the purpose of the LDAC workshop is to also investigate ways in which the ontology-based data can be combined into a complete and holistic set of available building data. Finally, and most importantly, a number of industrial cases are invited, aiming to give an indication of the effect of these ontologies on every day practice in managing building data (design, construction, facility management, smart cities).


Submit and Register
We wish to strongly encourage members of the W3C LBD Community Group to participate!

Important Dates
Submission deadline: September 15, 2017
Notification of acceptance: September 25, 2017
Registration: October 20, 2017
LDAC workshop: November 13-15, 2017

TPAC 2016 Presentations

From 16 to 23 September 2016, the annual Combined Technical Plenary / Advisory Committee (TPAC) Meetings Week was organised, this time in Lisbon, Portugal. Our Linked Building Data Community Group was present at the TPAC with a 2-hour meeting presenting ourselves to the wider W3C community. The following presentations were given by members of our group:

LDAC 2016 — 4th Linked Data in Architecture and Construction Workshop — 21-23 June

The LDAC workshop series provides a focused overview on technical and applied research on the usage of semantic web, linked data and web of data technologies for architecture and construction (design, engineering, construction, operation, etc.). It aims at bringing together researchers, industry stakeholders, and standardization bodies of the Linked Building Data (LBD) community together. The aim of the workshop is to present current developments, coordinate efforts, gather stakeholders, use cases and plan future activities.


Submit a 2-pager position statement (about 800 words) before the submission deadline (6 May 2016), including the following:

  • Title, authors, contact addresses, affiliations
  • Which session do you wish to present in:
    • Use case: 20 min presentation around a specific industrial use case and/or business strategy
    • Technical: 20 min presentation concerning particular technical implementations or developments
    • Hands-on/tutorial: +30 min time slot with a hands-on session, a tutorial, or a demo showcase. In this case also include:
      • Indication of how you plan to organize the hands-on session
      • Facility requirements (server, beamer, …) and requirements for attendees (own laptop, software installed, …)
    • Plenary: 20 min general research presentation
  • Abstract
  • Short presentation of your work
  • Key references

More information

Access to Reports from LBD related Workshops

The following reports are from a number of LBD related workshops and events which have been held over the past year and with  are now accessible.

The first report covers the BIM Semantic Web/Linked Data Workshop, part of the which was part the buildingSMART International summit which took place from Monday 23rd March to Wednesday 25th March, 2015, at the Building Research Establishment (BRE), Watford, London. The workshop was organized by the following members of the LDAC group and the SWIMing project: Thomas Liebich, Matthias Weise, Pieter Pauwels, Jakob Beetz, María Poveda and Kris McGlinn. It consisted of three sessions: a general introduction session, a requirements and use case descriptions session and finally a summary and formation of working group session.

Link to BIM Semantic Web/Linked Data Workshop Report

The second report covers part of the LDAC 3rd International Workshop on Linked Data in Architecture and Construction held in Eindhoven, held on the 16th of July 2015. The LDAC workshop topic was “The use the Web of Data technologies for building information management in diverse practical use cases”. The report focuses specifically on a parallel event held by the SWIMing project around the development of use cases for linked data in energy efficient buildings and also a Hands-on tutorial sessions for participants around converting building data resources to linked data.

Link to Report on SWIMing Use Case Session, held at LDAC

The third report summarizes the main aspects of the SWIMing workshop, held on Thursday 17th September, 2015, at the University Campus of Savona, Italy and aligned with Sustainable Places. It also details activities at two related VoCamp workshops; the first on the 14-15th of September, hosted by Ready4SmartCitites and held in Genoa, Italy and the second on the 15–17th of December, hosted by the SEAS project in Paris, France. Finally, a short report is provided regarding the BuildingSMART Conference held on the 12-15 October 2015 in Singapore. The next sections describe each of these workshops.

Link to report on SWIMing workshop, held at Sustainable Places and related events