- Trunk Tools, founded by Sarah Buchner, is an AI construction startup that integrates with existing systems to analyze project documents and drawings; it employs over 100 people and has raised about $70 million.
- The company says it has grown from two to more than ten live AI agents in about a year, with revenue quadrupling last year and about 3.5x growth expected this year.
- Its most recent funding was a $40 million Series B in 2025 at a $325 million valuation.
- In one example, Trunk Tools calculated that a $100 million project owner’s requested change would add nearly $4 million, leading the owner to abandon the change after seeing the cost.
Latest
From Teenage Carpenter to Founder: How Sarah Buchner Built AI Construction Startup Trunk Tools
Trunk Tools, an AI startup for construction founded by former carpenter Sarah Buchner, reports about $70 million raised and significant revenue growth.
- AI Construction
- Startup Growth
- Founder Story
Sources
Automation assists with selection and drafting. Every article retains its source links.