Airbnb has landed a further $555 million in funding from Google Capital and Technology Crossover Ventures.
The round was confirmed in a filing to the Securities and Exchange Commission this week.
The latest windfall brings the total raised by CEO Brian Chesky and co to around $3 billion since its foundation in early-2009.
Reports suggest that the company is eventually seeking to raise a total of $850 million, giving the accommodation sharing giant a massive $30 billion valuation.
The $555 million is the second biggest round ever raised by the company, following its $1.5 billion Series E in June 2015.
It also organised a debt financing transaction to the tune of $1 billion in June this year.
Most commentators agree that Airbnb faces a series of obstacles in the regulatory world, not least in some of the biggest cities in the world but San Francisco and New York in the US, in particular, before it heads down the route of listing on the public markets.
The raise comes against a backdrop of a gradual shift in the model to both target more business travellers and widen the role of hosts to providing "local" services such as tours and guiding roles in a destination.
Earlier this week, Spanish startup and local guide platform Trip4Real was bought by Airbnb for an undisclosed fee.