AutoSitu is a Y Combinator W26 company building an AI-native workspace that automates development plan reviews for cities and design firms. The platform uses coordinated AI agents to flag regulatory and zoning compliance issues before submission, reducing review cycles and approval timelines. According to the company, it can cut city comments by 50-70% and reduce resubmittal cycles, potentially shortening approvals by several months. It was founded in 2025.