Known as the Spiral House, the concrete and steel home is covered in cedar and flanked on the waterfront side by a wall of glass. To create a constant 'subtle feeling of motion,' the architect avoided right angles in many architectural aspects of the home, Ms. Bell said. Pillars beneath a raised portion of the home, shown center left, feature pillars that jut out at different angles.

The home is built on the idea of three strata, Mr. Moore said—wood, glass and concrete, from top to bottom. The vertical board and batten cedar wood facade is an homage to traditional beach houses in Greenwich from 50 years ago. 'We were interested in the atmospheric effects of light, water and air,' around a coastal setting, he said.

'The idea was to have as much seamless glass as we could accomplish on the waterfront side of the house,' the owner said. Even the railing around the home is made of glass, Ms. Bell said, to maximize the views around the property.

Inside, the home is designed to feel 'very sleek, very clean' in its presentation. Concrete floors with radiant heating are used throughout much of the house. A glass-encased gas fireplace is shown in the living area.

The first floor includes many of the living areas, including the dining area, kitchen, mud room and laundry. The spaces blend together, in part, because appliances and storage spaces are concealed.

'There are really views from every room,' Ms. Bell said. The dining table, left, along with a concrete-topped island seating area, is shown. There is a private beach for members of the community. 'There a tremendous amount of movement and inspiration' in the natural environs around the home, she said.

The home's design has gained critical praise, including awards from the American Institute of Architects, according to the office of Joeb Moore + Partners. The stairwell is shown.

The home measures roughly 4,500 square feet and includes four bedrooms, four full bathroom and one half bath, according to the listing.

Ms. Bell is selling because her two college-age sons are attending school in California. A view of the Long Island Sound from inside the home is shown.

The home was listed in April for $7.995 million. The price was reduced to $7.595 million in May. Alison Farn-Leigh of William Raveis Real Estate has the listing.