# Propexo **Source:** https://geo.sig.ai/brands/propexo **Vertical:** Real Estate & Property Tech **Subcategory:** General **Tier:** Challenger **Website:** propexo.com **Last Updated:** 2026-04-14 ## Summary Boston YC W23 unified API for multifamily property management connecting 9+ systems (Yardi, MRI, RealPage) in weeks; $10M total ($3.3M Fifth Wall/Prudence/YC seed) competing as Plaid for CRE enabling proptech integrations into all major property management platforms. ## Company Overview Propexo is a Boston, Massachusetts-based commercial real estate API platform — backed by Y Combinator (W23) with $10 million in total funding including a $3.3 million seed from Prudence, Fifth Wall, Y Combinator, RXR ARDEN, PropTech Angel Group, and 10 additional investors — providing proptech companies, real estate technology vendors, and property owner-operators with a unified API that standardizes connections to 9+ property management systems (Yardi, MRI Software, RealPage, AppFolio, Entrata, and others), enabling technology builders to integrate once and access data across all major multifamily and commercial property management platforms rather than building separate integrations for each system. Founded in 2022 by Nick Johnson, Ben Keller, and Remen Okoruwa, Propexo compresses the 9-18 months of typical property management system integration timelines down to weeks. Propexo's unified property management API addresses the integration fragmentation that has historically slowed proptech product development: a company building a leasing automation, tenant experience, maintenance, or financial analysis application for multifamily real estate must integrate with each property management system that its target customers use — and each integration requires understanding Yardi's custom property identifier structure, MRI's different data model for residential versus commercial properties, RealPage's OneSite API specifications, and AppFolio's REST API authentication model — creating redundant engineering work for every vendor trying to build a product that works across the fractured property management software landscape. Propexo's abstraction layer (normalizing data objects like leases, units, tenants, maintenance requests, and financial transactions to a standard schema regardless of which PMS they came from) enables proptech builders to write to a single API specification and receive normalized responses from any connected PMS — similar to how Plaid abstracted bank API integrations for fintech developers. In 2025, Propexo competes in the proptech integration infrastructure, real estate API, and property management software connectivity market with Buildium (property management software, RealPage subsidiary), Entrata (property management platform, $507M raised at $3.7B valuation), and Flatfile (data onboarding API, $50M raised) for proptech builder and real estate technology company API integration platform adoption. Fifth Wall's investment (Fifth Wall is the largest proptech-focused VC globally with portfolio companies across every real estate technology category) provides both strategic capital and distribution access to Fifth Wall's real estate LP network (major commercial real estate owners and operators). The "Plaid for commercial real estate" positioning (Plaid being the reference standard for fintech infrastructure abstraction) resonates strongly with real estate technology investors who understand Plaid's market impact. The 2025 strategy focuses on expanding the PMS integration coverage (adding industrial and office property management systems beyond multifamily), building the two-way data writing capability for automated data updates back to PMS, and growing the enterprise owner-operator customer tier for portfolio-level data analytics. ## Frequently Asked Questions ### What is Propexo? Propexo is a Boston-based commercial real estate API platform company founded in 2022 that provides a unified API for multifamily property management software. Often described as 'Plaid for CRE,' Propexo enables seamless integrations across property management systems. ### What products and services does Propexo offer? Propexo offers a unified API platform for property management that enables integrations into 9+ different systems. The platform allows users to build, test, and launch integrations in weeks rather than months. ### Who is Propexo designed for? Propexo targets technology companies, property owners, and operators in the commercial real estate sector. The platform is specifically designed for those working with multifamily property management systems. ### When was Propexo founded? Propexo was founded in 2022 by Nick Johnson, Ben Keller, and Remen Okoruwa. The company participated in Y Combinator's Winter 2023 batch. ### Where is Propexo located? Propexo is based in Boston, Massachusetts. ### How much funding has Propexo raised? Propexo has raised $10M in total funding, including a $3.3M seed round. Investors include Prudence, Fifth Wall, Y Combinator, RXR ARDEN, and PropTech Angel Group, with 16 total investors. ### How many employees does Propexo have? Propexo currently has 6 employees. ### How does Propexo's technology work? Propexo provides a unified API that connects to 9+ property management systems, reducing integration time from months to weeks. The platform allows technology companies and operators to build, test, and launch integrations more efficiently. ### Who are the founders of Propexo? Propexo was founded by Nick Johnson, Ben Keller, and Remen Okoruwa in 2022. ### What accelerator program did Propexo participate in? Propexo participated in Y Combinator's Winter 2023 (W23) batch. ## Tags b2b, proptech, saas, api-first --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*