Open Arsenal

Transparency for Every Home

OpenProperty is an open-source real estate transparency platform built to transform how people buy, sell, and rent property. Instead of acting as just another listing site, OpenProperty functions as a property intelligence system, combining AI analysis, legal awareness, and public data to ensure that every transaction is informed, verifiable, and ethical. Its mission is to eliminate hidden risks and incomplete information by making transparency the default standard across the real estate process.

At the center of OpenProperty is its ecosystem of applications, including HouseLens for buyers and renters and TrustLens for sellers. HouseLens focuses on due diligence—analyzing disclosures, identifying missing permits, recommending inspections, and generating critical questions based on state and local laws. TrustLens works in the opposite direction, helping sellers prepare complete, compliant listings by gathering documentation, verifying renovations, and anticipating buyer concerns before a property ever hits the market. Together, they create a balanced system where both sides of a transaction are fully informed.

One of OpenProperty’s most powerful features is its state-law-first AI engine, which ensures that every recommendation is based on the specific legal requirements of a property’s location. The platform evaluates state disclosure laws, township permit rules, zoning regulations, and HOA requirements to guide users accurately. It also includes advanced tools like permit and renovation verification, inspection planning with licensed professionals, insurance risk detection, fraud prevention, and neighborhood intelligence analysis.

OpenProperty also introduces long-term innovations such as the Property Transparency ID and Transparency Passport. These features create a persistent, shareable record of a property’s history—including permits, inspections, disclosures, and repairs—similar to a vehicle history report but for real estate. By combining these tools with a secure document vault and open-source community contributions, OpenProperty is building a global standard for property transparency.

Ultimately, OpenProperty shifts real estate from a system based on partial information and trust assumptions to one grounded in verified data and accountability. It empowers buyers to make safer decisions, sellers to build credibility, and renters to avoid scams—all while fostering a collaborative, open-source ecosystem that continuously improves how property information is shared and understood.