Semble AI
Semble AI is a YC Fall 2025 (F25) company. Based in San Francisco, CA, USA. Team of 2.
About Semble AI
Summary
Semble AI builds AI agents that autonomously design building systems, including fire suppression, HVAC, plumbing, and security, for commercial and residential construction projects. Its customers are building system integrators who today produce these designs manually through spreadsheets and hand-drawn schematics, a process that can stretch across weeks. Semble replaces that manual drafting and coordination work end to end.
Business model
SaaS subscription targeting building system integrators.
Go-to-market
Building system integrators are the direct buyer, adopting Semble as an all-in-one design platform to compress project timelines on both commercial and residential jobs.
From the Y Combinator listing
Autonomous building-system design for construction companies.
Semble AI builds AI agents that design building-systems (fire, HVAC, plumbing, security). Construction companies use Semble to cut down weeks on commercial and residential projects. The $600B building-system integration industry still runs on spreadsheets and manual drawings, even as building codes rapidly evolve and become more localized. It’s a massive blind spot for the tech world. Jonathan and Ethan met studying computer science at Stanford. Jonathan worked at Convergint, one of the world's largest building system integrators, specifically for the purpose of learning how this industry works. Ethan is obsessed for a different reason: His house burned down in 2017 due to a faulty fire system. They are determined to make Semble the industry standard for construction design.
Facts
- B2B / B2B -> Engineering, Product and Design
- San Francisco, CA, USA
- 2
- Active
- Early
Founders (2)
- Ethan Boyers
- Jonathan Tyshler
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