Broccoli AI, which deploys AI agents for plumbing, HVAC, and electrical contractors, raised $52 million across Series A and B rounds at a $300 million valuation, according to a source familiar with the company's financials.

The Series A closed at $22 million, followed by a $30 million Series B. The capital will fund product development and geographic expansion.

The economics of vertical AI are straightforward: narrow the wedge, train deep, own the vertical. Broccoli operates where many VCs have been burned before—traditional service industries lack sophisticated software adoption and are fragmented by geography and specialty. That fragmentation kills horizontal SaaS plays but rewards companies that can encode domain expertise into models trained on plumbing intake forms, job ticket workflows, and technician dispatch logistics.

The $300 million valuation prices in the bet that defensibility comes from proprietary datasets and custom models rather than from generic LLM wrappers. For plumbing and HVAC firms—businesses running on decades-old systems and thin margins—an AI agent that automates customer intake, job estimation, or scheduling carries real revenue impact. That specificity is the moat.

Vertical AI fundraising continues to attract capital, particularly when founders can articulate clear unit economics and a path to expansion across related verticals without rebuilding the entire product stack.