Kendall Jenner's Home -- I Got a Deluxe Apartment in the Sky!

18-year-old Kendall Jenner just bought a place that's almost certainly nicer than yours ... a spectacular condo in an insanely exclusive area of L.A. ... and she paid for it herself!
We've learned Kendall is now the proud owner of a 2 bedroom, 2.5 bath condo in a high-rise building near Westwood ... with a jetliner view of L.A. She paid $1,399,000, and got a $910,000 mortgage.

The building is awesome. It has a 24-hour valet, a concierge and doorman, heated pool, fitness center, catering kitchen, social room, card room and wine storage.

Kendall's unit has Subzero and Viking appliances.

Kris Jenner is listed on the docs, but we know the unit is for Kendall and we're told she paid with her own money.

BTW ... the realtor for the sale is Farrah Aldjufrie ... the daughter of Kyle Richards. It's her first big sale.

Everyone's movin' on up.