Developers of Plano’s $3 billion Legacy West development plan to build a residential tower on one of the project’s last remaining properties.

Columbus Realty is seeking city approvals to build the 18-story apartment tower on the southwest corner of State Highway 121 and the Dallas North Tollway.

The 177-unit residential tower would be built on a 2-acre site on the south side of SH 121, according to documents filed with the planning department.

Developers have already built 823 apartments in the Legacy West project.

“Due to existing development and the reservation of land for future commercial development, the locations available to build the remaining 177 units are limited,” according to city documents.

The residential skyscraper is proposed for a vacant block on Windrose Avenue, across from where Ryan LLC plans to build a 24-story office tower.

Ryan’s construction site and the Columbus Realty tower are both north of the high-rise Plano campus of Liberty Mutual Insurance.

Two residential towers have already been built in Legacy West.

The 29-story LVL29 skyscraper has 328 rental units.

And the Windrose Tower condominium tower has nearly 100 units.

The Legacy West development includes offices for Toyota, JPMorgan Chase, Liberty Mutual, FedEx Office and other businesses.

Karahan Cos., Columbus Realty, and KDC developed Legacy West beginning in 2014.

The 18-<a class=story building would be built at Windrose Avenue and SH 121.” src=”×0/smart/filters:no_upscale()/” class=”dmnc_images-img-module__1-ZBN max-w-full text-white object-contain”/>
The 18-story building would be built at Windrose Avenue and SH 121.(City of Plano)