What is a group of Houseboats called?

A group of houseboats is commonly called a Flotilla.

A collective noun is a singular word that refers to a group of individuals or entities. When it comes to houseboats, specifically, there isn't a widely recognized or established collective noun that references them as a whole. However, considering the nature of houseboats and their tranquil and community-oriented lifestyle, we can propose a potential collective noun: "a mooring of houseboats." Comparable to a flock of birds or a pack of wolves, the term "mooring" alludes to the common practice of tying up multiple houseboats together at a single docking or marina area. Envision these houseboats lined up alongside each other, enjoying the rhythmic movement of the water as they create a vibrant and collective living experience. The term "mooring" captures the unity, companionship, and shared living elements that are often found among houseboat dwellers. Next time you encounter a group of houseboats nestled together along a calm waterway, you can describe them brilliantly as "a mooring of houseboats," highlighting the community spirit and camaraderie witnessed among the residents of these delightful floating homes.