The 17-year-old has excelled during his nine first-team appearances for the Blues this season and scored his first senior goal in the 2-1 win over Chesterfield at the start of January.
Hause made his professional debut in the FA Cup tie at Crewe Alexandra in November before enjoying an eight-game consecutive run in the starting XI in December and January.
He becomes the third of the club’s crop of rising stars that has put pen to paper on a new deal in recent weeks, after Matt Ingram and Matt McClure signed extensions in the lead up to the Bristol Rovers game.
“I feel fantastic,” Hause told wwfc.com. “I’m really happy to be given my second contract at this club. It’s a good club – you get chances as a young lad.
“I’ve got to keep working hard and developing so the chances to play more first-team football will keep coming.”
He added: “Wycombe is a great club to develop as a player. Richard Dobson has brought through a lot of good young players such as Jordon (Ibe), Matt Phillips, Kadeem Harris, Charles (Dunne) and Ant (Stewart), and hopefully I can keep working with him, Gaz and Lee and they can help me become a top player too.”
Blues boss Gareth Ainsworth told wwfc.com: “It’s a hugely important signing for the club. I’ve said I want to protect the assets of the football club and myself, Lee and Dobbo consider Kortney to be a huge asset.
“What he’s done already as a 17-year-old proves how far he can go in the game. I believe he may play at the highest level and to sign somebody like that and have them associated with Wycombe is great for the club and its future. I’m really pleased we’ve been able to keep hold of him for another couple of years.”
He added: “This club has got a good pedigree and good foundations for youngsters to develop. We’ll have to keep finding these gems and developing them, but we’re happy doing that.
“Anyone who’s playing well will get a chance under me, whether they’re the youngest or oldest player – that’s how I work and will continue to work.”
In a message to fans, Ainsworth concluded: “Be proud of the young players we’ve got here - come down and watch them. Hopefully they can add to a big future at Wycombe which I intend to provide.”