McLean estate sells for $13.5M, NoVa’s biggest residential sale in 2026

J.W. “Joey” Kaempfer, a former Washington, D.C.-area commercial real estate developer, has sold his Langley Farms estate in McLean for $13.5 million.

It’s the top residential deal of the year for Northern Virginia, according to Heider Co., a D.C.-based real estate team affiliated with TTR Sotheby’s International Realty.

Last May, Kaempfer, the chairman of McArthurGlen Group, which is billed as Europe’s largest owner, developer and manager of designer retail outlets, listed the property for $15 million.

Although the property was marketed as 6400 Georgetown Pike in McLean, Fairfax County property records list the residence as two separate properties on Dogue Hill Lane, which sold Jan. 6. Records list the buyer as Inverness Hill LLC, an entity formed in November 2025.

Daniel Heider, who “has become known in Washington for selling ginormous, ultra-luxe estates,” according to Axios D.C., and is the CEO and founder of Heider Co., and Theo Adamstein, a senior sales advisor, represented the seller and procured the buyer, according to a Heider Co. Instagram post. The company describes the sale as the fifth-highest on record in Langley Farms.

The home was built in 1934; however, the listing notes it was originally constructed prior to the Civil War. Situated on 3.36 acres, the home offers 9,900 square feet with six bedrooms and nine baths (one that includes a “handmade French soaking tub by Naudie”).

Features of the estate include a pebble driveway behind motorized gates, an “informal wing” with 30-foot vaulted ceilings and a lap pool and adjacent spa.

Kaempfer founded the Kaempfer Co., a Washington, D.C.-based real estate development, management and construction firm, in 1977. In 2003, the company was acquired by New Jersey-based Vornado Realty Trust, an owner, manager and developer of office and retail assets.

A decade earlier, in 1993, Alan Glen, a friend and outlet-mall developer, asked Kaempfer to take on the company’s Europe expansion, according to a 2000 profile in Time magazine. McArthurGlen was founded in Europe in 1993. By 1995, the company opened Cheshire Oaks in the United Kingdom, which McArthurGlen calls the first designer outlet in Europe. Kaempfer moved his family to London in the late 1990s, according to news reports.

According to Fairfax County records, a request for a building permit to renovate existing baths, kitchen and family room and to remove columns and change truss designs was submitted Dec. 14, 2025.