Ramona Gwynn and her husband, Frank, knew what they were looking for when they bought their Malvern estate in 2014.

"We had our checklist," she said.

They were also willing — and able — to be particular about their next home.

"We saw every high-end home that was out there," Gwynn said.

The game and billiard room.
Michael Eckstrom of MJE Photographic
The game and billiard room.

The couple looked at properties in Chester, Delaware and Montgomery Counties, visiting properties on golf courses, in developments and with plenty of acreage.

In the end, they found a five-bedroom property on 16.5 acres in Chester County.

"Entertainment center, game room, workout room, garages, pool, et cetera," Gwynn said. "All the boxes on our list checked."

The 12,000-square-foot-plus home was built in 2003, and it has required no work aside from regular maintenance, Gwynn said.

"The house was built perfectly. It needed nothing," she said.

The wine cellar.
Michael Eckstrom of MJE Photographic
The wine cellar.

With an extensive checklist before buying, it's not surprising that Gwynn had difficulty pinning down a favorite part of the home.

"Our favorite room is always changing," she said.

The property includes a lower level with its own custom wine cellar, game room, private theater and family room.

"If you want to watch a ball game or a movie, the home movie room becomes the favorite," Gwynn said.

Upstairs, there is a four-season and billiard room that gets use when the couple is entertaining.

"Walking through the house, any room can make a person feel so comfortable and at home," she said.

One of the porches.
Michael Eckstrom of MJE Photographic
One of the porches.

Outside, the home features large porches as well as a large in-ground pool, waterfall and  cabana.

Gwynn said finishes like hand-cut cherry wood and leaded windows are likely to attract new buyers now that the home is listed for sale.

"This house has great bones, great lines," she said. "It was built like a fortress."

She said the couple has decided to sell the estate as they move into retirement.

"It's not going to be easy to leave here," Gwynn said. "For us, it's time to pass the baton to new owners to enjoy what we have enjoyed atop our hill in Malvern."

The home is listed with John and Karen Hockenberry at RE/MAX Main Line for $4.35 million.

The home theater.
Michael Eckstrom of MJE Photographic
The home theater.