Welcome to One Jefferson

Welcome to One Jefferson, located on top of the Mountain Park neighborhood of Lake Oswego.   We proudly offer studios, 1 bedrooms, 2 bedrooms and 3 bedrooms, in a variety of floor plans.   Our apartment homes offer a serene setting surrounded by nature with amazing views of the Portland landscape. 

At One Jefferson Apartments you are treated as an owner by the exclusive Mountain Park Home Owners Association. The association operates a private aquatic center with an olympic lap pool, large water slide, and therapeutic spa. With access to the expansive 45,000 square foot clubhouse you can choose to play a game of basketball on the indoor court, or head to the game room for a match of ping-pong, foosball, or billiards. The facility also offers impressive room rentals for large gatherings and celebrations.

We do not accept portable screening from other companies.