Renovating old buildings is messy — dozens of trades, paper plans, miscommunication, and costly surprises once walls come down. Imagine if every contractor on site could open a shared 3D model of the building on a tablet and see exactly what needs doing, even if they've never touched BIM software before. That's what BIM4REN built: a set of digital tools, from entry-level to advanced, that make building renovation faster and more coordinated. They tested it on real renovation projects in Paris, San Sebastian, and Venice with actual contractors and housing organizations.
Renovating residential buildings is slow, expensive, and chaotic — especially for the 90% of construction companies that are SMEs. Plans get lost between trades, errors are discovered too late on site, and digital tools like BIM remain out of reach because they're too complex and costly for small contractors. The result: renovation projects run over budget, take too long, and Europe's aging building stock stays energy-inefficient.
The project delivered a web-based platform with BIM tools at multiple complexity levels (entry-level to top-grade), updated versions of the open-source BIMServer, an online object catalog service, and a full software repository with user guide. All tools were validated through living lab pilots in Paris, San Sebastian, and Venice with real renovation projects.
If you are a social housing provider dealing with aging building stock that needs energy upgrades — this project developed a web-based platform with BIM tools specifically designed for renovation workflows. It was tested with a large French social housing organization (Logirep) in Paris, covering the full renovation process from survey to execution across 3 pilot cities.
If you are an SME contractor struggling to adopt digital tools because BIM software is too expensive or complex — this project built entry-level to top-grade tool options accessible via a single web platform. With 90% of construction companies being SMEs, the tools were designed specifically for your reality, tested with SME contractors like Kursaal in real renovation projects.
If you are an energy efficiency firm coordinating multi-trade renovation projects and losing time to fragmented communication — this project delivered an open-source BIM server update and an object catalog service that lets all parties work from a shared digital model. The 28-partner consortium included major energy players like EDF and was validated in 3 living lab cities.
The core BIM server technology is open-source, which means no license fees for the base platform. The project developed differentiated access schemes with different business models — from free entry-level tools to premium top-grade services. Exact pricing depends on the access tier chosen.
The platform was designed for the full residential renovation value chain and tested across 3 cities (Paris, San Sebastian, Venice) with organizations managing large portfolios. The consortium included a large French social housing organization, suggesting the tools are built for portfolio-scale operations.
The BIMServer updates are explicitly open-source, and the BIM4REN repository includes software and a user guide as a public deliverable. However, some specialized tools from the 15 SME technology providers in the consortium may have separate licensing. Check with the coordinator Nobatek for specific IP terms.
The project was funded under the EU's Energy Efficient Buildings topic (LC-EEB-02-2018) and aligns with EU renovation directives. The tools support energy efficiency renovation workflows, though specific national building code compliance would depend on local configuration.
The project ran from 2018 to 2022 and produced 23 deliverables including a user guide. The entry-level tools were designed for contractors with no prior BIM experience. Based on available project data, the living lab pilots demonstrated adoption by non-technical users within active renovation projects.
The platform is built on the widely-used open-source BIMServer and uses BIM Bots by TNO, which are designed for interoperability. The object catalog online service and open standards approach suggest integration with existing BIM and construction management tools is supported.
This is a heavyweight consortium of 28 partners from 10 countries with a strong industry tilt — 61% are industry players and 15 are SMEs. The research backbone includes top European institutes (Nobatek, CSTB, Tecnalia, TNO, Fraunhofer ISE) alongside real market players: EDF (major utility), CMB Carpi and ATI Project (leading BIM implementers), plus 11 SME technology providers and contractors. The European Builders Confederation and Green Building Council Italy add industry association weight. This mix means the tools were built by people who actually renovate buildings, not just study them. With EUR 6,997,515 in EU funding and Nobatek (France) coordinating, this is a well-resourced and market-facing effort.
Nobatek (France) — research and technology organization coordinating the project. Contact via project website or SciTransfer.
Want to adopt BIM4REN tools for your renovation projects or connect with the consortium? SciTransfer can arrange an introduction to the right partner for your needs.
