The home-rental service was valued at $10bn last year, but just steps away from Airbnb headquarters homeless people survive in ways similar to their billionaire neighbour

Five tiny homeless encampments dot two sides of the San Francisco headquarters of Airbnb. The inhabitants appear to be outsiders in every sense. Out on the streets. Out of the city’s economic boom. Out of luck.

None of those interviewed had heard of Airbnb, though its four-storey office, a 72,000-square-foot converted warehouse, dominates this section of the SoMa district.