What does the cryptic crossword clue "Huge amount of money for a swanky residence (4)" mean?

The definition is "Huge amount of money / a swanky residence". The wordplay uses a double definition. Double definition The answer is PILE.

Huge amount of money for a swanky residence (4)

Times Cryptic #28881 | 27 Across | 2024-04-03 flower