R&D Tax Credit for Con-
struction

Industry-Specific Requirements in the Construction Industry

The construction industry is often not perceived as a classic R&D sector – wrongly so. Building Information Modeling (BIM) is becoming the key driver of construction technology innovation. Developing proprietary BIM plugins, parametric design algorithms, digital twins for buildings and AI-based planning optimisation generates significant eligible R&D costs. If your company develops its own BIM workflows that go beyond the mere use of commercial software (Revit, ArchiCAD, Allplan), strong funding opportunities exist.

The development and testing of novel building materials is a core eligible area. Ultra-high performance concrete (UHPC), textile-reinforced concrete, self-healing concretes with bacterial encapsulation, lightweight materials from recycled sources and bio-based insulation materials require systematic test series to determine mechanical properties, durability testing and fire protection certification. Testing according to DIN EN 206 (concrete), DIN EN 1992 (reinforced concrete) and DIN 4108 (thermal insulation) generates extensive test documentation that serves as R&D evidence.

Structural simulations and structural optimisation using FEM software constitute eligible R&D when they go beyond standard calculations. Developing novel structural concepts (topology-optimised structures, adaptive facade systems, modular hybrid construction methods), simulating complex soil-structure interactions and numerically modelling innovative connection techniques (adhesive joints in construction, integrated sensor technology) require experimental validation and iterative optimisation loops.

Sustainability R&D is gaining increasing importance in the construction sector and offers significant funding potential. Developing CO₂-reduced cement formulations, circular construction designs (Design for Disassembly), energy-autonomous building concepts and innovative building technology (e.g. ice storage, concrete core activation with heat pump) are typical eligible projects. Developing automated construction processes – robotics in masonry, 3D concrete printing, drone-based construction site monitoring – also regularly qualifies for the R&D tax credit.

Eligible R&D in the Construction Industry

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BIM-Based Digital Construction Processes

Developing BIM-based (Building Information Modeling) digital construction processes represents one of the most innovative and eligible areas in the construction industry. Particularly eligible is the research into new data models and interoperability standards that go beyond existing IFC formats, developing algorithms for automated collision detection and construction schedule optimization, and integrating real-time sensor data into digital twins of buildings. Technical uncertainty often lies in whether heterogeneous data sources — laser scans, IoT sensors, construction site cameras — can be integrated into a consistent digital model that enables reliable prediction of construction progress and quality deviations. Developing AI-powered planning assistants that learn from historical BIM data and automatically detect planning errors also qualifies as experimental development under the FZulG.

Novel Sustainable Building Materials

Research and development of sustainable building materials offers significant funding potential. This includes developing CO₂-reduced concretes using alternative binders such as geopolymers, calcined clays, or blast furnace slag, researching recycled aggregates from construction waste (R-concrete) with defined mechanical properties, designing bio-based insulation materials from renewable resources, and developing self-healing concretes that autonomously seal micro-cracks using encapsulated bacteria or polymers. Material characterization according to European standards (EN 206, EN 197) — compressive strength testing, durability testing, freeze-thaw resistance — requires systematic test series with uncertain outcomes and generates eligible personnel costs. Developing digital material profiles for BIM models is also an eligible auxiliary strand.

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Modular Construction Systems

Developing innovative modular construction systems combines structural research with manufacturing technology and offers numerous eligible project approaches. Eligible activities include researching new connection technologies for modular components — such as force-fit plug systems that work without wet joints —, developing parametric design methods that enable high architectural variability with standardized module dimensions, and designing integrated building services systems already built into modules during prefabrication. Technical uncertainty lies in whether the developed systems achieve the same structural performance, fire protection class, and sound insulation values as conventional construction methods. Researching transport logistics and assembly sequences for large modules is also eligible, provided new methods are developed.

Construction Robotics and Automation

Construction robotics and automation represent a highly eligible research field that is fundamentally transforming the construction industry. Eligible projects include developing autonomous bricklaying robots that use image processing and adaptive control to handle irregular wall geometries, researching large-format 3D printing methods (additive manufacturing) for concrete components, designing exoskeletons to support construction workers during heavy manual tasks, and developing autonomous construction vehicles with LIDAR-based environment detection. Particularly eligible are projects researching human-robot collaboration (HRC) on construction sites — an area where technical uncertainty regarding safety, reliability, and cost-effectiveness under real construction site conditions is especially high. Developing control software, sensor fusion, and adaptive control algorithms generates substantial eligible personnel costs.

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