The Sheraton Columbia Town Center Hotel will soon undergo $20 million in renovations to bring the property up to par with the four-star standards of its new Marriott Autograph flag.Owner and developer Costello Construction will add 70 rooms, bringing the total to 290, and update the entire interior and exterior of the hotel that sits on Lake Kittamaqundi at 10207 Wincopin Cir.

The four-star brand has high standards, Costello said, so the building's HVAC systems will need to be updated and all bathrooms and flooring in the hotel will also be redone. The atrium will also be completely redesigned, and other common areas and amenity spaces will be added or updated like a fitness center, dining and bar areas, outdoor fire pits, a rooftop pool, meeting and conference areas and possibly a spa. The hotel's entryway will also change.