What is the term for stairs that only serve one or two apartments with small landings?

The term that best describes stairs serving only one or two apartments with small landings is isolated stairs. This designation reflects the limited access these stairs provide, typically catering to a small number of units without connecting to a larger network of corridors or common areas that are seen in more extensive stairwell designs.

Isolated stairs are often found in smaller residential buildings or within specific architectural setups where the aim is to provide private access to individual apartments. This can enhance privacy and reduce traffic, making them ideal for low-density housing or boutique apartments.

In contrast, service stairs usually refer to those designed for moving goods or staff, rather than occupants, and are not limited to a small number of apartments. Return stairs typically relate to configurations that allow for access back to a lower floor and are often part of a larger staircase system. Emergency stairs are designed specifically for evacuations and safety protocols, usually with significant accessibility considerations for all occupants. Having an understanding of these definitions helps in identifying architectural features and their intended functions within building design.