Encrypted AI for the asymmetric information that is the deal.
Encrypted AI for commercial brokers, developers, property managers, real estate attorneys, and residential agents serving HNW and UHNW clients.
Real estate runs on confidential information — off-market opportunities, buyer financials, tenant data, partner term sheets, celebrity client names. ArcaKey is the only AI environment a sophisticated real estate professional can use without compromising the asymmetric information that creates the deal in the first place.
Five ways real estate uses Arca · Key every day.
Built for.
Knowledge Pack & Secure Search.
Curated, pre-ingested reference content, queryable without ever leaving the vault:
- Fair Housing Act guidance and HUD enforcement examples
- FIRPTA reference and IRS compliance materials
- State title-law references (major markets)
- Closing-checklist templates by transaction type
- State-specific disclosure requirements
- Reg Z / TRID summaries and lender-disclosure rules
- ALTA endorsements and title-insurance reference
Zero external egress. Your queries against these references stay inside the encrypted environment. Deal flow, buyer identities, and off-market opportunities never signal their existence to an external search.
When you need information beyond the Knowledge Pack, — a comparable transaction, a zoning update, a buyer's business history — Secure Search handles the outbound query privately:
- Scrubs email, phone, SSN, credit card, DOB, titled-person, and street-address patterns from the query before anything leaves the vault.
- Routes the scrubbed query through a sandboxed Brave Search integration — tenant-isolated, never pooled with other search traffic.
- Returns results with inline citations; raw query is not persisted beyond the request.
- Emits an Ed25519-signed proof-of-purge record (hashed scrubbed query + categories redacted + counts; never the values) usable for discovery-response attestation or internal audit.
- Self-hosted SearXNG variant for privacy-absolute workflows is on the Q2 2026 roadmap — Brave-backed path is live today for Executive+ accounts with a Brave API credential.
Google with the receipts — and none of the surveillance.
What’s included for real estate.
- Tenant-data handling aligned with Fair Housing audit trails — encrypted memory and exportable audit logs designed to withstand fair-housing scrutiny.
- Off-market deal protection — Ghost Mode toggle for the most sensitive sourcing and pitch sessions.
- Encrypted memory across transactions — long-running deals stay context-rich without becoming an exposure surface.
- Exportable signed audit log — required for closings, partner reporting, and dispute resolution.
- TEE-isolated inference — NVIDIA H100 confidential computing with NRAS attestation. Live attestation endpoint ships today in stub mode; transitions to live NRAS on GCP A3 CC capacity cutover. See /security for the per-session evidence artifact. Higher-capacity reasoning for Executive+ — 7B / 8B default on Professional for throughput; Qwen 72B / Llama 70B available on request today, routed through GCP A3 Confidential VM on capacity cutover.
- Post-quantum encryption (ML-KEM-768 / CRYSTALS-Kyber) — the encryption standard NIST has finalized for the next decade.
- HNW-grade NDA compatibility — terms designed to satisfy ultra-luxury listing-agreement and capital-partner confidentiality clauses.
Pricing for real estate.
| Buyer | Recommended tier | Starting price |
|---|---|---|
| Solo agent / solo broker | Professional | $499/mo |
| HNW residential agent / commercial broker / developer principal | Executive | $1,499/mo |
| UHNW family-office RE principal | Sovereign | from $4,999/mo |
| Brokerage or development firm (5+ seats) | Teams Professional | $399/seat/mo |
| Investment sales team or mid-size firm (10+ seats) | Teams Executive | $1,199/seat/mo |
| REIT, institutional sponsor, or large operator (25+ seats) | Enterprise | from $1,199/seat/mo, negotiated |