How do collectors establish relationships with auction houses?

The direct way is usually the easiest way. That is: buy and sell art.

What does it take for an artist to have their works listed on prestigious auction houses like Christie's or Sotheby's? - Quora

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What does it take for an artist to have their works listed on prestigious auction houses like Christie's or Sotheby's? - Quora

Why do auction houses charge a buyer's premium? - Quora

What is an artist's share of the resale value in an auction or sale? - Quora

I am downsizing our personal Hollywood collection, with a rare film print just found of 'This is Cinerama'. How do I confirm and value it for auction? - Quora

Is owning an auction house a profitable venture? - Quora

What happens to the royal family's old stuff? Do they auction it off or sell it to museums? - Quora

What is the best way to establish a relationship with an auction house? - Quora

What is the upcoming auction at Christie's featuring Charlie Watts' personal collection all about? - Quora

What is the record for the highest selling price of a camera at an auction house like Sotheby's or Christie's? - Quora

Do you think auction houses should be held responsible for selling counterfeit items in their auctions? Why or why not? - Quora

Why are auctions popular? - Quora