An 840-home guard-gated community just northeast of the developing Orange County Great Park will open its doors to the public Saturday, Sept. 30.

A joint venture by homebuilders Lennar and Toll Brothers, Altair Irvine encompasses 10 neighborhoods. The homes, all multi-story and detached, range from 2,909-6,579 square feet and have three to six bedrooms. Prices range from roughly $1 million to $2 million.

The builders tout the community’s resort-style amenities such as a clubhouse, three pools, spas, links to public trails and parks. The clubhouse, scheduled to be completed next year, includes tennis courts, bocce ball courts, a courtyard, a barbecue area and more.

“It’s truly an oasis, a paradise in Irvine,” said Jeremy Parness, president of Lennar’s Southern California Coastal Division.

Students living in Altair Irvine will go to Irvine Unified School District’s K-8 Beacon Park School and Portola High School, which is across Irvine Boulevard from the community.

Lennar is building six neighborhoods and Toll Brothers four.

Parness said the two builders complement each other, as Lennar offers all-included type homes and Toll Brothers more customizable homes.

The builders bought the 278-acre parcel from FivePoint — which is overseeing the development of 9,500 homes around the Great Park — for $472 million in October 2015.

“You really get to tailor the site to the homes and the end user,” said Joshua Welty, assistant vice president of Toll Brothers, about benefits of being both the developer and homebuilder.

First residents are expected to move in late October, Parness said. The build-out is expected in about 2 1/2 years.

Saturday’s grand opening is 11 a.m.-3 p.m., where visitors can tour 27 model homes. The address is 50 Aquila, Irvine. For more information, visit altairirvine.com or call Toll Brothers at 844-790-5263 or Lennar at 949-423-3007.