A team of AI engineers on a mission to change how America builds.
Plan review is one of the most consequential jobs in construction. We built Mason for the professionals who carry that responsibility every day. The tool does the groundwork. The reviewer makes every call.
Private plan review is under pressure. We built the tool that changes that.
Retirements are outpacing new hires. Project volumes keep climbing. And most of the tools reviewers use today were not built for what the job actually looks like. Experienced professionals are leaving the field faster than the pipeline can replace them and that gap keeps getting wider.
We built Mason to give every reviewer more capacity without asking them to give up control. The AI surfaces what needs attention, shows its reasoning, and steps back. Your name is on the review. Your judgment is what it runs on. That was the design from day one and it has not changed.
“Mason prepares the draft. The reviewer owns the result. Every time.”
People who have done this before.
Salim and Alex have built AI products that found real product market fit and scaled to real revenue. Now they are bringing that same approach to plan review.
Salim Damerdji
Cofounder, CEO
- Early hire at Synopsys for DSO.ai, a product that went on to generate significant annual revenue for the company
- Led a data science team at Wealthfront as Senior Data Scientist
- Academic background in statistics from Berkeley and Oxford
Hear from our champions
“Mason is a game-changing tool that's transforming the permit review process by automating some of the most time-consuming tasks.”
Adam
Senior Architect
Want to watch the full product overview?
Full VideoSeeing Mason work on a real permit set takes less time than a coffee break.
Book a demo and we will walk you through exactly what Mason finds, how it explains each flag, and what the finished comment letter looks like. Or upload a set yourself and try it for free.

