Build raises $8.5M from Index Ventures for an AI agent that handles data center approvals

On July 1, 2026, UK startup Build closed a $8.5M (€7.4M) seed round led by Index Ventures. The funds will go toward scaling an AI-agent platform that, according to the company, cuts pre-design approvals for data centers, power plants and industrial facilities by 95%.

What Build automates and why

Large infrastructure projects start long before the first excavator arrives. A developer who wants to build a data center first has to run a multi-stage paperwork marathon: selecting and technically analyzing a land plot, due diligence on title documents, assessing the availability of power capacity, environmental review, approvals from local authorities and regulators, and obtaining building permits and technical specifications. This pre-design stage takes from eight months to two years, depending on the country and region.

Build turns it into a job for AI agents. The platform analyzes the regulatory environment of a specific region, collects data from land registries, environmental databases and public sources on power grid capacity, and then assembles the full documentation package that teams of lawyers, development consultants and engineers previously prepared by hand.

Key details of the round:

• Size: $8.5M (€7.4M) in seed funding
• Lead investor: Index Ventures
• Date: July 1, 2026
• Country of founding: United Kingdom
• Target customers: developers of data centers, power plants and industrial facilities

Why is bureaucracy, not money, slowing the construction of AI infrastructure?

Demand for the physical infrastructure behind AI has multiplied: data centers for training and running large language models consume hundreds of megawatts. Microsoft, Google, Amazon and Meta have announced multibillion-dollar programs to build new capacity around the world.

The pace of construction is limited by more than funding. The real bottleneck is the pre-design phase: getting permits faster than the regulatory system allows is practically impossible. This creates a chronic lag: capacity is needed today, yet the first facility often opens three to four years after the investment decision. Automating the paperwork stage remains one of the few levers that can genuinely shorten the cycle.

What this means

The participation of Index Ventures, one of Europe's leading venture funds, with a portfolio ranging from Figma to Robinhood, confirms that automating infrastructure due diligence is becoming an investment category of its own.

AI agents have already proven effective at writing code and handling legal documents. Construction paperwork is the next logical front: the market is huge, processes are barely automated, and every extra month of approvals costs millions of dollars on a large project. If Build delivers the 95% speedup it promises, the company has a chance to become a standard tool for AI infrastructure developers worldwide.

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