File under "How Are the Mighty Fallen II": Any day now, the old Nelson Rockefeller house (most recently occupied by Eunice and Robert Shriver) will come tumbling down, to be replaced by another Foxhall Crescent,{cq singular} each house of which will cost about as much as the villa once did.

The august Foxhall neighbors include former Ambassador William McCormick Blair and his wife Deeda Blair, an international health consultant; former Florida Sen. Richard Stone and wife Marlene Lois; art collectors Virginia and Franz Bader; and international consultants Stephen and Jane McCarthy.

They all mourn the land's losses:

Two litters of foxes, the aboriginal inhabitants who gave Foxhall Road its name, have been relocated into Battery Kemble Park. The chipmunks, the squirrels and the raccoons are out beating the bushes for new homes.

"The birds are scattering for cover," says Blair.

The big old trees, which shaded drinks on the terrace and games on the lawn and walks to the garden, came crashing down, along with illusions of grandeur. The swimming pool was cracked and leaked, the springs that once fed the pond dried up in despair.

A few battered boards; some tales of dinner parties where political deals were cut and played, lost and won; and a few tattered pictures of a trillionaire's life will be the only souvenirs of the house from whence former Vice President Rockefeller served, in various capacities, Presidents Franklin Delano Roosevelt, Dwight Eisenhower and Gerald Ford.

Rockefeller bought the house and acreage in 1946. He used it sporadically when he was in town, even during the years when the Vice President's House on Observatory Hill was his official residence. The rest of the time, it was used by his large staff. ("It's not one of his gallery houses," one once said, referring to the five or six establishments with extensive art collections.)

Rozansky and Kay (a company now owned by Alan Kay) paid $5.5.million in September 1977 for the entire 29-acre estate and house, and began to develop it under the name Foxhall Crescents {cq plural}. Alan Kay offered his wife Diane the house, but instead they bought and have remodeled another landmark, Merrywood, on the Virginia palisades.

The Rockefeller residence itself was a National Symphony Women's Committee Decorators' Show House in 1978. The Shrivers bought the old house and an acre in 1979, for $750,000, from the Foxhall Crescents developers with a rumored repurchase agreement.

"The house needs a tremendous amount of work," says Dagmar Burton, sales manager for Foxhall Crescents. "When it will be torn down hinges on the construction work. Soon, I'm sure."

"I tried to sell the house for nine or 10 months. I showed it a great deal. We had some inquiries from a few embassies and a girls school. But it was only zoned for a private residence. I stopped showing it about a month ago, when the company had to begin to clear the land and cut down the trees for the underground utilities.

"When all the nice things were out of it, you could see the house had no architectural integrity. It was not a great old house. The oldest part, the 1812 farm house, is totally deteriorated. The new part {1932} had rooms for entertainment, but they don't have nice molding or good woods.

"The next section {of houses} is being built on the north, the backside, on 12 acres around the Rockefeller house."

The Foxhall Crescent houses are designed by Arthur Cotton Moore. Over the past five years, the developers have built and sold three sections totaling 76 houses.The first ones sold for $380,000 and up; the newer ones begin at $700,000 and go up to $882,000 and more, depending on lot size and amenities.

When the property was first sold to Rozansky and Kay, the neighborhood coalition extracted an agreement. "We had hoped Rockefeller would make it a bird sanctuary. But the developers did agree to save the trees on a 30-foot perimeter" said Jane McCarthy. "For a time they seemed to have a three foot perimeter instead. The bulldozer comes out and the trees go thump. But we had a meeting with them . I marked the important trees in the boundary and they have kept some. We were sad to see those 80 foot trees go. We won't see their like in our lifetime."

Stone says the land "has been scalped. It's as bald as Yul Brynner. Not only the trees but every blade of grass has been taken down in the middle. The trees are only left on the perimeter. I had to fight for the trees in my own yard."

Burton, however, says that all the trees covered by the agreement "were counted, flagged and saved" as specified.

"We've planted two trees for every one we took down. Some trees had to go to put in the underground utilities," she says. "Admittedly, the new trees are 8 to 16 feet high, not the same size as the 100 foot high old ones." As for fauna, Burton says, "I never saw foxes or deers, just a giant turtle."

"They weren't supposed to touch the honeysuckle bank, which used to catch the leaves. With nothing to stop them, the leaves sweep down 48th Street onto our lawns," says Virginia Bader. "I suppose it's always a pain in the neck to be close to construction, but it's more fun to yell at the developers than your husband."

"Only vigilance by people like Virgina Bader saves any trees at all. You have to watch them all the time," says architect Richard Ridley, who advised the community on environmental planning.

From her 32-room duplex apartment at 62nd and Fifth Avenue, Happy Rockefller, Nelson's widow, had no comment.