Paxton Mosaic Campus

Description:

Paxton Mosaic Campus is one of the most historically significant properties in Northern Virginia. Constructed in 1872 for Pennsylvania industrialist Charles R. Paxton, the estate is anchored by Carlheim Manor, a nearly 17,400 square foot, 32-room Second Empire mansion designed by New York architect Henry Dudley and listed on the National Register of Historic Places since 1979. Set on approximately 16.9 acres in the northeast quadrant of Leesburg, the campus includes multiple structures and buildings comprising approximately 26,330 square feet of improved building area, set among gently rolling grounds with mature tree canopy, open lawn, and a unique system of underground caves.

In accordance with Rachel Paxton's will, the estate has operated continuously as a non-profit corporation serving children in need since 1921. The Margaret Paxton Memorial for Convalescent Children is now seeking mission-aligned tenants for the Paxton Mosaic Campus. Qualified nonprofit organizations may be offered little to no base rent in exchange for full NNN responsibility and a commitment to meaningful capital improvements to their leased space. For-profit tenants are required to pay market base rent in addition to all NNN obligations. All tenants must maintain a minimum of 75% of program participants qualifying as children in need under the Trust's guidelines.

The campus is well-suited for a range of child-focused programs including early childhood education, daycare, behavioral health, speech and occupational therapy, vocational training, and adaptive recreation. Each of the seven structures on the campus offers a distinct footprint and character, creating flexibility for multiple concurrent tenants operating complementary programs.

The property is located within minutes of downtown Leesburg, US Route 15, East Market Street, and Inova Loudoun Hospital, approximately 35 miles from Washington, D.C. and 10 miles from Dulles International Airport. Loudoun County is consistently ranked among the wealthiest and fastest-growing counties in the United States, with a population that has grown 29% since 2010 and over 95,000 children under the age of 15. Demand for quality child-focused services in this market continues to outpace available supply, making the Paxton Mosaic Campus a genuinely irreplaceable opportunity for the right operator.

601 Catoctin Circle NE is a rare 16-acre campus in the northeast quadrant of Leesburg, Virginia, anchored by Carlheim Manor, a nearly 17,400 square foot, 32-room Second Empire mansion designed by New York architect Henry Dudley. Listed on the National Register of Historic Places and designated as part of the Leesburg Historic District, the estate dates to 1872 and has continuously served community and children's missions for over 100 years. The campus includes eight structures totaling approximately 26,330 square feet, set on gently rolling grounds with significant tree cover and open lawn.

The property sits along Catoctin Circle NE with direct access to US Route 15 (North King Street), placing it within minutes of downtown Leesburg, East Market Street, major retail, and healthcare services. The surrounding market reflects the continued strength of Loudoun County, one of the fastest-growing and highest-income jurisdictions in Virginia. The property owner is actively advancing a phased redevelopment vision for the campus, with the possibility of future development at North of the campus, designed to accommodate multiple mission-aligned tenants serving children and families.

The Paxton Mosaic Campus at 601 Catoctin Circle NE encompasses approximately 16.9 acres in the northeast quadrant of Leesburg, Virginia, within minutes of US Route 15, downtown Leesburg, East Market Street retail, and Inova Loudoun Hospital. The campus is approximately 35 miles from Washington, D.C. and 10 miles from Washington Dulles International Airport. A new primary entrance completed in 2009 at Catoctin Circle provides excellent vehicular access, and the surrounding area is defined by established residential neighborhoods and institutional uses consistent with the campus's historic character and mission.
The grounds feature gently rolling terrain with significant mature tree canopy, open lawn areas, and a unique system of underground caves — a rare and largely irreplaceable physical setting within an infill Leesburg location. The campus includes seven residential structures and outbuildings comprising approximately 14,253 square feet of existing improved building area, anchored by Carlheim Manor at 601 Catoctin Circle. The remaining structures are distributed across the property at addresses ranging from 581 to 625 Catoctin Circle, each offering a distinct footprint and character suited for a variety of program and office uses. The property is located within Leesburg's H-1 Old and Historic District overlay, which requires a Certificate of Appropriateness from the Board of Architectural Review for exterior alterations but does not restrict use.

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