Startup incubator hashtag?

Does anyone know what hashtag could I use to describe a building for startup incubator?

Tag, not “hashtag”. It has no hash symbol.

Most numerous are some dozens of office=incubator. However, it mixes incubator:business_incubator=yes and incubator:business_accelerator=yes.

Single-digit instances of office=startup_incubator and office=business_incubator are more specific.