Cardi B was bumpin’ and grindin’ all over her man at her 29th birthday party, and then he paid her back with a new home!!!

Offset revealed Cardi’s bday present in the middle of her star-studded party Monday night at L.A. River Studios — he bought her a house with a damn pool on the roof.

The Migos rapper got on the mic and unveiled his gift with a video presentation, saying he wanted to get her something extra special after the big year they just had … including the birth of their son last month.

It sounds like Cardi’s new crib is in the Dominican Republic — her family’s homeland — and it looks like Offset found a nice, secluded spot surrounded by palm trees.

Cardi’s party was rocking all night, with a Caribbean “dancehall” theme that had everyone in attendance movin’. Just some of the big names celebrating with them included Tiffany Haddish, Teyana Taylor, 2 Chainz, Lizzo, Snoop Dogg, Taraji P. Henson, Chance the Rapper, Winnie Harlow, Karrueche Tran, PnB Rock, Anitta, Larsa Pippen and Trey Songz.

The dinner menu was also straight outta the islands — jerk chicken, oxtail, rice and plantains to go with all the tequila and vodka cocktails.

Looked like a great time and a great future residence for Cardi, Offset and the family.