Probook raises $40M Series A from a16z & Sequoia; dispatch-first AI for $700B home services market

Probook, a New York-based AI operating system for home service businesses, raised $40 million in funding comprising a $34 million Series A led by Andreessen Horowitz and a $6 million seed round led by Sequoia Capital, which also participated in the Series A. The company was founded by George Eliadis, who grew up in his family's pressure-washing business and later worked at a $40M HVAC/plumbing/electrical contractor, giving the team rare domain expertise in trades.

Unlike AI vendors that crowded the home services space with chatbots and voice agents, Probook built its platform around dispatch—the scheduling brain that determines which technician goes to which job. Early customers report dramatic operational wins: Summers Plumbing booked 2,542 jobs in its first month without human intervention; Del-Air cut dispatchers from 22 to 10; Peterman Brothers centralized dispatch across 11 markets and 200 technicians without adding overhead. The platform integrates intake, customer messaging, and outbound communication into a single context layer.

For platform architects: Probook's approach (operational spine first, agents second) inverts the typical AI startup playbook in services. It targets a $700 billion industry where fragmentation—local shops, PE roll-ups, legacy dispatch tools—has resisted consolidation. The $40M bet signals investor conviction that trades are ready for purpose-built AI infrastructure when founders actually understand the work.