Below are updated renderings of 1776 Curtis, a 28-story apartment building under construction in Downtown Denver.

Renderings are courtesy Davis Partnership Architects .

Shea Properties is the developer. The property has most recently served as a parking lot which closed in advance of construction.

The residential portion will rise to 28 floors, with the 28th floor serving as a mechanical penthouse. A total of 359 apartment units will be offered in studio, one, and two bedroom options. The 27th floor will feature penthouse units.

Ground-floor retail space will be incorporated in 1776 Curtis. The project will have a total of 16,965 square-feet of retail space.

Structured parking will be included and will feature a total of 535 parking spaces.

Construction of 1776 Curtis is slated to take 25 months, which puts this downtown Denver construction project on target for a 2018 1st quarter opening.

The residential side will be constructed using concrete with a precast skin.

Amenities will be featured on the 8th level of the residential portion and will include a pool, two spas, an outdoor common space with fire places and grills. A fitness room and a dedicated space for dogs will also be showcased.

A 9-story office building will be constructed on the 17th street side of the project as well.

Here is a photo of the construction site from this month: