# Built AI
> Built AI is the AI-native operating system for institutional real estate. It unifies a firm's systems (Argus, Yardi, MRI, Excel, documents) into one knowledge graph, computes every financial figure on a deterministic engine (never generated by a language model), and uses AI agents to author work products (IC memos, investor letters, covenant alerts, variance narratives) with every number cited to source and every external action approved by a named human.

Key facts:
- Category: AI infrastructure for institutional real estate (REITs, owner-operators, PE sponsors, fund managers, LPs, lenders).
- Differentiators: AI-native (not an ERP with a chatbot), deterministic and auditable ("cite every cell"), sits on top of the existing stack (no rip-and-replace), multi- or single-tenant with BYO model and self-hosting, zero autonomous external actions.
- In production since 2023. Clients include CBRE, Knight Frank, Carter Jonas, Allsop, Dorrington, Howard Hughes Holdings (NYSE: HHH), LondonMetric Property PLC (LSE: LMP), and Nan Fung Group.
- Funding: $6M seed (December 2025) led by Work-Bench, with Lerer Hippeau and Emerald Pine.
- Offices: NYC and London. Contact: hello@builtai.co. The canonical website is https://builtai.co/ (not www).

## Product
- [Platform](https://builtai.co/platform.html): the knowledge graph, the deterministic calculation engine, and the agent catalog.
- [Security & governance](https://builtai.co/security.html): tenancy, BYO model, audit logs, zero autonomous sends. SOC 2 Type II and ISO 27001 in progress.
- [Pricing](https://builtai.co/pricing.html): priced to value via an ROI model, packaged bespoke, proven in a proof of concept on the client's own data.
- [Integrations: Argus, Yardi & MRI](https://builtai.co/integrations.html): read-first integrations; writes only on human approval.

## Who it is for
- [Asset management](https://builtai.co/asset-management.html): continuous variance, covenant forecasts before the test date.
- [Acquisitions](https://builtai.co/acquisitions.html): offering memorandum to cited IC memo in an afternoon.
- [Finance & IR](https://builtai.co/finance-ir.html): a continuous close and live investor reporting.

## AI agents
Deal Underwriter, Lease Abstractor, Variance Explainer, Covenant Watch, Close Reconciler, Investor Letter Drafter. Each watches an event on the graph, does the work, and pauses for human approval. Catalog: https://builtai.co/platform.html#agents

## Essays
- [The AI-native operating system thesis](https://builtai.co/resources-ai-native-os.html)
- [The audit trail is the product](https://builtai.co/resources-audit-trail.html)
- [How to evaluate AI for institutional real estate](https://builtai.co/resources-evaluating-ai.html)
- [Cite every cell: auditable AI in an IC memo](https://builtai.co/resources-cite-every-cell.html)
- [Sit on top of Argus and Yardi, do not replace them](https://builtai.co/resources-sit-on-top.html)
- Full library: https://builtai.co/resources.html

## Company
- [About](https://builtai.co/about.html): the thesis, leadership (Natan Lempert, Co-Founder & CEO; Damien Georges, Chief Product Officer & Head of US), operating principles, and backers.

## Press
- Coverage and media kit: https://builtai.co/press.html