Construction will begin in a few days on a long-vacant Sears building near Westfield Topanga mall in Warner Center, according to representatives with the mall’s owner, Unibail-Rodamco-Westfield.

The Paris-based mall giant will transform the 160,000-square-foot former department store into a posh entertainment complex with an upscale movie theater, bowling alley and restaurants.

The property, designed with three levels of glass and landscaping, will feature a grand entrance for Westfield Topanga, connecting the mall with The Village, across Victory Boulevard, making the area more walkable for visitors. The $250-million development is slated to open in late 2021.

“The thing that is really missing there is a significant dining and entertaining district,” said Larry Green, Unibail-Rodamco-Westfield’s executive vice president for development. “What we’re doing is taking down the former Sears store and turning that space into a new front door for Topanga.”

The company says the Sears building at 6600 Topanga Canyon Blvd. in Woodland Hills will feature a chef-driven Food Hall along with upscale restaurants, lounges and cocktail bars, entertainment and recreational activities and landscaped indoor and outdoor public spaces and plazas.

The building was purchased by Westfield Corp. in 2015, a couple of years before the company was acquired by Unibail-Rodamco-Westfield, and has remained dormant since then.

The news comes as Westfield Topanga is currently undergoing a facelift. The mall has recently completed an interior renovation, including upgrading floors and all restroom facilities and family lounges.

The mall, which includes stores such as Neiman Marcus, Nordstrom, Macy’s, Target, Tesla, Apple, Microsoft along with luxury brands Gucci, Salvatore Ferragamo and Louis Vuitton, sits across the street from an upscale open-air The Village.

Combined, the two properties include nearly 350 shops, restaurants and personal service providers.

Minimal impact on mall guests is expected during construction, according to the company representatives. Shops and restaurants will remain open for business throughout the process.

The mall’s owner, Unibail-Rodamco-Westfield, is currently seeking to turn a largely vacant Promenade mall near Topanga mall into a mega-development with about 1,400 multi-family residential units, roughly 244,000 square feet of shops and restaurants, about 630,000 square feet of office space, with a hotel with up to 570 hotel rooms.

Last year, Los Angeles planning officials recommended a fully enclosed 7,500-seat arena as part of the massive development proposed for Woodland Hills that was half the capacity of the originally proposed 15,000-seat stadium.’

Within days, a group of Woodland Hills residents filed an appeal against the development.