Lucid Bots, a Charlotte-based robotics company, has closed an oversubscribed $20 million Series B round to expand its autonomous exterior cleaning platform across the United States.

The round was co-led by Cubit Capital and Idea Fund Partners, with participation from Taylor Rhodes, WaterStone Impact Fund, and Front Porch Ventures, along with existing investors. Total funding now stands at $34 million.

The company builds drone-based and robotic systems that automate exterior cleaning tasks — window washing, building facades, and solar panels — targeting a commercial cleaning industry with a persistent labor shortage. According to the company, exterior cleaning is difficult to staff, physically demanding, and carries safety risks that make it a prime candidate for automation.

Proceeds will go toward scaling commercial operations, expanding domestic manufacturing capacity in Charlotte, and accelerating rollout of Lucid Refresh — the company's Robotics-as-a-Service (RaaS) subscription platform that provides cleaning operators with robots, maintenance, and software under a recurring model.

The RaaS model is notable: rather than selling hardware outright, Lucid Bots bundles the robot, maintenance, and software into a monthly subscription. This lowers the barrier for commercial cleaning operators to adopt automation without large upfront capital expenditure.

The raise comes as robotics funding has picked up broadly, with investors increasingly backing applied hardware startups solving unsexy but large, labor-constrained markets. Exterior building maintenance — fragmented, physically hazardous, and resistant to traditional labor pipelines — fits that profile.

Lucid Bots did not disclose customer count or revenue figures in the announcement.