A new type of firm: Build partners with 
Index. to accelerate institutional development with AI. Learn More
AI for the Built World.
The world's largest institutions trust Build to accelerate their most important projects.
Build is your AI operating partner for the Built World. Build pairs domain expertise with agentic AI to accelerate your most important projects an order of magnitude faster than market.
Locate viable land opportunities against your criteria.
Screen candidate sites on geospatial data (automated or expert-reviewed) and evaluate viability in detail across the key risk areas.
Confirm the most viable markets and benchmark the opportunity against comparable transactions and asset values.
Every site, workflow, and deliverable tracked in one place – tasks, owners, and status across the full development lifecycle.
Secure, permissioned storage for diligence, financing, and stakeholder documents – organized by site and shareable in a click.
Every data layer – utilities, environmental, zoning, and market – mapped and queryable against any site or portfolio.
Build keeps the asset performing. Market vacant capacity, track NOI in real time, and coordinate maintenance from one system. Teams spend less time on coordination and more time on decisions that move the asset forward.
Build coordinates design, validates costs, and closes scope gaps before construction begins. Teams move faster to breaking ground with fewer surprises along the way.
Build gets buildable options in front of decision-makers faster. Feasibility, massing, and block fit produced in days. More configurations explored, more risk removed, earlier in the process.
Define what the site can actually support – program, yield and regulatory envelope – and return a clear go/no-go.
Generate and compare project configurations from strategic and site constraints, with analysis and recommendations.
Bring the scheme to life in context through reference imagery and 3D model views.
Build screens deals, stress-tests income, and builds the underwriting model at speed. Teams evaluate more opportunities, make better decisions, and deploy capital with greater confidence.
Build produces compliant submissions built on live regulatory data, not recycled templates. Formatted to each authority's requirements from the start so teams can move faster and come back less often.
Build finds opportunities others miss. Off-market, parcel-level, validated against power, planning, and environmental constraints before a dollar is spent on surveys. Teams move to the right opportunity faster.
Locate viable land opportunities against your criteria.
Screen candidate sites on geospatial data (automated or expert-reviewed) and evaluate viability in detail across the key risk areas.
Confirm the most viable markets and benchmark the opportunity against comparable transactions and asset values.
The most comprehensive geospatial intelligence platform for the built world. Power, fiber, environmental, and zoning data across 18+ countries, updated continuously and cited in every output.
Power capacity, substation loading, fiber routes, gas mains, water/wastewater systems, and connection points mapped to every site.
Flood zones, contamination records, wetlands, soil classifications, seismic data, and groundwater conditions aggregated from public and commercial sources.
Parcel-level zoning classifications, permitted uses, comparable transactions, tax environments, and absorption metrics across markets.
Build's platform turns every project into a system of action. Tracking, documents, and geospatial data in one place so teams spend less time coordinating and more time executing.
Every site, workflow, and deliverable tracked in one place – tasks, owners, and status across the full development lifecycle.
Secure, permissioned storage for diligence, financing, and stakeholder documents – organized by site and shareable in a click.
Every data layer – utilities, environmental, zoning, and market – mapped and queryable against any site or portfolio.
Top teams use Build for
"Build has made an important contribution to the UK's ability to identify and assess sites for AI infrastructure."
Scott Campbell
Senior Policy Advisor, AI
"Build.inc is a valued partner in supporting our deal-related workflows. By helping automate time-intensive research and analytical processes, they’ve enabled our team to evaluate a greater volume of opportunities across markets efficiently while maintaining a high level of rigor."
Michael Alderman
Managing Director, Head of US Industrial, Tishman Speyer
"For a long time I’ve worked on projects for hyperscale, including at AWS. With Build, we can make quality decisions, faster. Build helps us find the fatal flaws in our pipeline, and helps us find and move faster on the sites that can work. Other developers are sleeping on this. I’m happy we’ve partnered with Build since the early days."
Mark Gethings
Senior Manager, Site Selection & Development Due Diligence
Why Institutions
Build with us.
By Builders, for Builders
Domain experts from real estate, infrastructure, and energy train our systems and stay involved through the lifecycle of your project.
Quality, delivered in hours rather than weeks
Domain expertise and institution-grade AI are at the core of our operation, not a layer on top. You get better output, faster.
We meet you where you work
Connects to your existing email, data rooms, and internal systems. Rather than rip-and-replace, we augment the processes you already have.
100% auditable accuracy
Trace every recommendation back to a primary source. No black boxes – auditable outputs your team can present with confidence.
Enterprise Security
Built for security, compliance, and auditability on day one. Controls and configurable guardrails with institution-grade infrastructure.
By the numbers.
Collective AUM of firms served
Projects delivered
Live data sources and tools
Countries served
What is Build?
Build is the AI-native operating partner for the built world – the first agentic development firm combining autonomous AI agents with domain experts to accelerate commercial real estate from concept to completion.
What does Build do?
Build's AI platform, Dougie, automates mission-critical CRE workflows including site selection, desktop due diligence, underwriting, investment committee memos, test fit analysis, market research, zoning analysis, environmental diligence, and ESG reporting. The world's largest institutional investors, developers, and operators trust Build to deliver fully vetted opportunities in days rather than weeks.
Who uses Build?
Build serves institutional real estate clients across data centers, industrials, energy, power, office, telecommunications, mixed-use development, hotels, and multifamily. Clients include Tishman Speyer and Stack Infrastructure.
Who founded Build?
Build was co-founded by James Stirrat-Ellis (CEO, Harvard Architecture, ex-Heatherwick Studio) and Ben McClusky (CTO, multi-agent reinforcement learning at Imperial College London, ex-Gorillas). The company has offices in New York and London.