West Ham were strongly linked with a move for the 24-year-old, however Villa pipped them to his services.
After undergoing a medical, the Brentford hitman clinched a move to the Championship outfit.
The fee is believed to be about £12million which could rise to £15m, however Villa didn't disclose the figure when they announced the transfer after the 11pm deadline.
GETTY
Scott Hogan has sealed a switch to Aston Villa
With its history and tradition I can’t wait to start working hard and helping the team
"The striker moves to Villa Park for an undisclosed fee and has put pen to paper on a four-and-a-half-year deal."
Speaking after his move, Hogan said: “I’m delighted to be at a club like Aston Villa.
GETTY
Slaven Bilic tried to sign Scott Hogan in the January transfer window
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"With its history and tradition I can’t wait to start working hard and helping the team.
“It all happened quite quickly and now I'm looking forward to meeting my new team-mates tomorrow and beginning a new chapter in my career."
Hogan's pedigree in the Championship is undoubted as he hit 14 goals for the Bees this term before his departure.