Square Working is the company behind Proprietio, an all-in-one property management platform for independent landlords and small-to-mid-size property management companies in the United States. Founded in 2024 and headquartered in Miami, Florida, the company builds software that consolidates leasing, rent collection, accounting, maintenance and owner reporting into a single system of record — priced flat by portfolio size, with no per-door fees and no monthly minimums. Alongside residential rentals, Square Working ships purpose-built modules for HOA, condo and co-op boards, commercial real estate, self-storage, student housing and associations, together with white-label options, SSO and an open REST API. The company's focus is giving smaller operators the accounting depth, automation and owner reporting that were previously only available in enterprise property management suites.