A building operating system is the software layer that connects a building's hardware, people and property information so they work as one. A connected device knows what it can do. Della gives it the context to know when, why and for whom it should do it.
Your phone's camera takes pictures. Through the phone's operating system, the same camera can translate a sign, deposit a check or scan a document. None of that is the camera; it is the operating system. Buildings work the same way. A lock opens a door and a thermostat holds a temperature. Connected to an operating system, the same lock can let a vendor in only for the hours of a work order, and the same thermostat can switch an empty apartment to settings that save energy.
Most buildings already have plenty of connected devices. What they lack is coordination. Connecting devices puts them on one screen. Coordinating a property means every system responds to the same events, such as a signed lease, a vacancy or a work order, under the same rules. The industry has plenty of property management systems for the business side of a property. Property operating systems, which run the physical side, are a newer category.
A building operating system sits between people and hardware. It keeps a live model of the property: its buildings, units, doors and devices, who lives where, whose lease starts or ends when, and who is allowed to do what. Supported systems from different manufacturers connect to that model through integrations, so each device follows the property's rules instead of running on its own. When something changes, the operating system coordinates every connected system that needs to respond, in the right order. Each system keeps its specialized job, and what each device can do still depends on its make and model. The operating system adds the context: knowing everything else happening in the building. As new workflows are added at the operating system level, supported hardware that is already installed can take part in them too.
Della is defining the property operating system category. Della OS was built from the start as an operating system for multifamily buildings, not a dashboard and not one manufacturer's app. The PMS runs the business; Della OS runs the building. It extends the PMS into the physical property, connecting occupancy changes to supported access, locks, intercoms, Wi-Fi, climate, sensors and resident services. Residents, site teams, portfolio managers and integration partners get one consistent Della experience, whichever brands are installed, while each device keeps the capabilities of its own make and model. A connected device knows what it can do. Della gives it the context to know when, why and for whom it should do it.
Hardware that does more than it was bought to do, a repeatable operating standard that does not depend on individual vendor portals or manual handoffs, and a platform that carries over to every property you add.
An operating system does three things a device app cannot. It knows the whole property, including people, leases, units and devices. It works across hardware from many manufacturers. And it lets new workflows reach every supported device. A dashboard that only shows a few devices, or an app that only works with one manufacturer's products, does not do that.
No. The PMS runs the business: leases, residents, rent and accounting. Della OS runs the building. It is a natural extension of the PMS that does what owners have long wanted their PMS to do in the physical property: issue and remove access, start and end services, and keep devices and teams in step with each lease. Della OS is integrated with Yardi, Entrata, RealPage, AppFolio and ResMan.
No. A building automation system controls central equipment such as boilers, chillers, ventilation and lighting, and it keeps doing that job. Della OS focuses on the occupancy side of operations: access, units, connectivity, devices inside units and the people who manage them. The two complement each other.
Yes. More than half of what Della OS does needs nothing installed, including PMS sync, the resident app, messaging, amenity booking, packages and maintenance. Where equipment is added later, such as access control, smart locks or thermostats, it joins the same operating standard.
Smart building systems · PMS integration · Building automation system · Della Connect · Mission Control · Della AI
