Two brothers, one mission

We love characterful growth

Growing up in the UK, we saw first hand how difficult it is to keep cities beautiful and well-functioning. London has a rich historic character that needs preserving, but it also has a deep housing crisis. We started to ask the question: is it possible for construction to happen at a faster rate, while keeping the city’s character and maintaining high construction standards?

Safety and speed shouldn’t be opposites

The Grenfell Tower fire in 2017 left a powerful impression on us. Seventy-two people lost their lives because fire safety standards were not kept up. It is a constant reminder that building codes exist for a reason, and that complying with them shouldn’t be merely a box-ticking exercise. This tragedy taught us that outdated processes of compliance review fail the public and fail builders.

Humans are the best plan reviewers

We are in awe of the skills of plan reviewers. Their ability to understand pages of drawings and rules, to focus, to remember thousands of details are important, but what really marks them out is their cultivated taste and judgement.

When a plan reviewer makes a call about what kinds of things will cause an issue in construction, or about what an obscure line of the IBC means, they are doing something an AI will never do. They are using their lived experience of being in buildings and following construction processes, and coming up with a nuanced judgement call about what is desirable from a human perspective. This is a beautiful thing, and it is irreplaceable.

Founding set4

We founded set4 to give plan reviewers the best tools for doing their job. With AI handling the heavy lifting, reviewers can focus on what matters most: judgement, nuance, and accountability. This is what drives us.