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UpdatedAug 7, 2026

Real Estate — Updated!

Specifications and open-source platforms for self-sovereign, encrypted real estate data management with blockchain-inspired verification, enabling local control, tamper-resistant records, and composable property intelligence.

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Open Arsenal Real Estate Specifications

The real estate ecosystem is built around the idea of shifting property intelligence away from centralized listing platforms and into locally hosted, self-sovereign data environments. Instead of relying on third-party platforms to define, store, or interpret listings, the design treats each property record as a portable, structured dataset that can exist independently across servers, devices, or private infrastructure. These records are designed with strict consistency in format so that spatial details, valuation inputs, and descriptive attributes can be processed uniformly by applications and AI systems. The result is a model where real estate information behaves less like static content on a website and more like a composable data layer that can be reused, validated, and extended across multiple systems without losing integrity.

Alongside this structural shift is a strong emphasis on cryptographic security and blockchain-inspired verification mechanisms to support trust and transparency. Property data is designed to carry verifiable histories, allowing changes, transfers, and updates to be tracked in a way that resists tampering while preserving auditability. Rather than fully relying on public blockchain infrastructure, the system blends local encryption with distributed verification concepts, ensuring sensitive information remains under user control while still enabling proof-of-origin and chain-of-custody style tracking. This combination creates a hybrid trust model where real estate data can remain private and locally governed, yet still participate in broader networks of validation, fractional representation, and interoperable ownership logic.

All specifications are released under the GNU Affero General Public License v3.0 or later (AGPL-3.0+) and may be used free of charge with the required attribution under Section 7 of the license. Organizations that require attribution-free commercial deployment may obtain a Specification Branding License (SBL). Licensing fees are determined based on the specific specification, deployment scope, and the scale of the network or environment in which it is deployed.

Real Estate Specs

  • HouseLens
    https://roxanneardary.com/houselens/
    An open-source AI-powered platform that helps buyers and renters analyze property disclosures, verify compliance, and uncover risks before making a real estate decision. It focuses on transparency and informed decision-making in property transactions.

  • OpenProperty
    https://roxanneardary.com/openproperty/
    An open-source real estate transparency platform that uses AI to verify disclosures, permits, and compliance for buyers, renters, and sellers. It aims to build trust through verifiable property information.

  • TrustLens
    https://roxanneardary.com/trustlens/
    An open-source AI-powered platform that helps sellers prepare fully transparent, disclosure-ready property listings before going to market. It supports better compliance and buyer confidence.

  • ValueGrid
    https://roxanneardary.com/valuegrid/
    An open-source property intelligence platform that provides transparent valuation models, environmental risk analysis, and a publicly verifiable National Property Ledger. It enhances data-driven real estate decisions.

  • CommonsHome
    https://roxanneardary.com/commonshome/
    An open-source AI-powered platform for home staging, spatial intelligence, and real estate marketing optimization. It transforms property photos into market-ready listings with virtual staging and insights.

  • PropIntel
    https://roxanneardary.com/propintel/
    An open-source, AI-driven property intelligence platform that tracks ownership, notices of default, liens, foreclosures, and title history across the United States. It delivers comprehensive property history data.

  • SignalParcel
    https://roxanneardary.com/signalparcel/
    An open-source system that maps land ownership, operators, and licensing relationships using verified public records. It supports transparent land and property analysis.

  • GeoListing
    https://roxanneardary.com/geolisting/
    Open Semantic Infrastructure for Real Estate, an AI-powered platform for listing generation, SEO optimization, compliance automation, market intelligence, and semantic property discovery. It streamlines real estate marketing.

  • TownIntel
    https://roxanneardary.com/townintel/
    Tracks rental registrations, landlord certifications, and census discrepancies at the town level with analytics and predictive insights. It aids in rental market oversight and compliance.

  • ParcelPlanner
    https://roxanneardary.com/parcelplanner/
    An open-source property intelligence platform that helps users determine what can legally be built, modified, or developed on a parcel of land using official zoning laws. It supports informed development decisions.

  • PlotLedger
    https://roxanneardary.com/plotledger/
    An open-source AI platform that unifies large land parcel data, zoning laws, permits, and ownership records into a single national intelligence system. It provides comprehensive parcel insights.

  • RecordMesh
    https://roxanneardary.com/recordmesh/
    A modular AI platform that converts jurisdiction-aware legal intent into real property instruments and county-ready recording packets for real estate filing systems. It automates property documentation.

  • SignalTruth
    https://roxanneardary.com/signaltruth/
    An open-source commercial real estate intelligence system that transforms public records into a structured, confidence-scored property graph with ownership, market, legal, and completeness analysis. It delivers detailed CRE insights.

  • UrbanLayer
    https://roxanneardary.com/urbanlayer/
    An open-source municipal infrastructure platform for zoning, permitting, GIS analysis, and AI-powered regulatory automation. It supports property development and urban planning.

  • CasaBot
    https://roxanneardary.com/casabot/
    An open-source AI-powered real estate companion that continuously monitors listings, analyzes market trends, and delivers personalized alerts. It assists users in finding ideal properties.

  • HappyHouse
    https://roxanneardary.com/happyhouse/
    An AI-powered home maintenance and property intelligence platform for tracking systems, managing repairs, and predicting maintenance needs. It helps property owners maintain their assets.

  • InspectHome
    https://roxanneardary.com/inspecthome/
    An open-source, transparency-first real estate platform that requires full property disclosures, verified documentation, and encrypted user data. It promotes confident home buying.

  • NeighborhoodGraph
    https://roxanneardary.com/neighborhood-graph/
    An open-source civic intelligence platform that transforms housing, land, infrastructure, and community data into an interactive knowledge graph. It explores neighborhood evolution over time.

  • Magistrate Title Services
    https://roxanneardary.com/magistrate-title-services/
    An open-source blockchain and AI-powered platform that modernizes real estate title, escrow, and verification systems. It provides secure, transparent title services.

  • HabitaSense
    https://roxanneardary.com/habitasense/
    An open-source AI-powered platform that delivers transparent, data-driven analysis of rental and home ownership markets. It supports market transparency.

  • LeaseTrack
    https://roxanneardary.com/leasetrack/
    An open source AI platform that analyzes U.S. rental markets to identify affordability gaps, ownership patterns, and landlord compliance issues. It focuses on rental market equity and compliance.

  • MindLedger for Real Estate
    https://roxanneardary.com/mindledger-for-real-estate/
    MindLedger for Real Estate is a modular, open-source real estate operating system that unifies CRM, listings, marketing, analytics, compliance, and accessibility into a single intelligent platform. It uses a dual-AI architecture to support both agent operations and public-facing services, enabling automation, customization, and continuous system evolution.

  • ListingStream
    https://roxanneardary.com/listingstream/
    ListingStream is a modular AI-powered platform that enables intelligent product placement within photographs while preserving the original image through strict pixel-level integrity controls. It combines scene understanding, real-time compliance rules, human-in-the-loop approval, and explainable AI to turn visual media into structured, monetizable marketing assets across multiple industries.

  • Nexa
    https://roxanneardary.com/nexa/
    Nexa: Continuity Engine is a generational wealth operating system that structures and governs long-term financial systems using programmable trust logic, lifecycle rules, and multi-trust network architecture. It enables simulation and management of inheritance, assets, and governance across decades to support sustained wealth continuity across generations.

Specification Branding License (SBL)

Standard

Optional

License & Notice Requirements

Open Arsenal Real Estate Specifications are released under the GNU Affero General Public License v3.0 or later (AGPL-3.0+).
By contributing to any project, you agree that your contributions will also be released under this license.

Please note the following:

  • All contributions must comply with the AGPL-3.0+ terms.
  • Under Section 7 of the license, all redistributions, forks, and derivative works must preserve attribution to:
    Roxanne Ardary and roxanneardary.com.
  • Open Arsenal specificiations are free to use with attribution. A Specification Branding License can be negotiated upon request.
  • The project's notice.md file tracks attribution requirements and contributor acknowledgments.
    Any update that adds new contributors or modifies attribution should also update notice.md.
  • When submitting a pull request, ensure that any new files maintain the attribution headers where applicable.
  • Network-deployed versions of this software must also remain fully AGPL-3.0+ compliant, including exposure of source code modifications when applicable under the license.

For full legal details, please refer to the AGPL-3.0+ license and the project's notice.md file.

Open Arsenal Hub
https://gitlab.com/Roxanne_Ardary/open-arsenal-specs

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