Sarah Buchner, once a teenage carpenter in Austria, founded Trunk Tools to tackle the overwhelming complexity and data fragmentation in construction projects through AI-driven tools. Her venture, now based in New York, empowers general contractors and subcontractors to manage millions of documents and workflows with unprecedented precision.
- Founded by former carpenter and contractor Sarah Buchner
- Uses large language models to process millions of project documents
- Helps construction firms improve safety, bidding, and change management
What happened
Sarah Buchner grew up in a blue-collar family in Austria and worked as a carpenter from a young age. After years of managing large construction projects, a tragic fatality on one of her sites inspired her to develop a health and safety app, which led her into software development focused on construction data. Pursuing advanced research in data science and early AI, Buchner discovered how fragmented and unstructured construction data hinders effective decision-making.
In 2019, she relocated to the U.S. to study at Stanford Graduate School of Business and founded Trunk Tools in 2021 during her MBA program. The company’s AI platform integrates and analyzes extensive construction documentation—often millions of pages—to assist project managers in identifying risks, managing specifications, and understanding the financial impact of changes.
Why it matters
Construction projects generate vast amounts of complex data, scattered across multiple platforms, making it difficult for humans to monitor and connect all information effectively. Trunk Tools harnesses advancements in large language models to interpret this unstructured data, allowing stakeholders to catch errors, foresee cascading effects of design changes, and enhance safety protocols.
This data-driven visibility addresses core challenges in the industry, such as cost overruns, compliance lapses, and safety risks. Buchner shared examples where Trunk Tools prevented costly unintended changes by calculating downstream financial impacts and provided rapid emergency response guidance in critical incidents. These capabilities can significantly improve operational outcomes for contractors and project owners.
What to watch next
Trunk Tools is poised to expand its footprint among general contractors, subcontractors, and project owners, particularly in the U.S. market where Buchner established the startup. Monitoring its ability to scale AI applications across diverse construction workflows and integrate with an expanding array of project management systems will be key indicators of future growth.
A critical focus will be how the company leverages ongoing improvements in AI language models to handle increasingly complex datasets and regulatory requirements. Success could signal broader adoption of AI-driven project management tools in construction, transforming industry standards for cost control, risk mitigation, and safety compliance.