Paxton Mosaic Campus
Property Details
Property Overview
Lease Description: The Margaret Paxton Memorial for Convalescent Children is seeking mission-aligned tenants for the Paxton Mosaic Campus, a 16-acre historic campus located at 601 Catoctin Circle NE in Leesburg, Virginia. The Trust's leasing program is designed to serve children in need and requires that tenant programs maintain a minimum of 75% occupancy by qualifying children in need as defined under the Trust's leasing guidelines. Both nonprofit and for-profit organizations are eligible to lease. Nonprofit tenants pay a negotiated percentage of market base rent (between 0% and 50%) plus their pro-rata share of operating expenses. For-profit tenants pay market base rent plus operating expenses. All tenants are subject to annual performance reporting requirements. Available spaces range from individual cottages to larger program buildings, with new construction planned in two phases totaling approximately 36,850 additional GSF. Eligible program types include early childhood education, daycare, behavioral health, therapy, vocational training, recreation, and other child-focused services.
Highlights
- Nationally registered historic asset — Carlheim Manor is a 32-room, nearly 17,400 SF Second Empire mansion constructed in 1872 and listed on the National Register of Historic Places since 1979 (Carlheim Mansion not for lease)
- 16.9-acre campus in the heart of Leesburg with mature tree canopy, open lawn, underground cave systems, and approximately 26,330 SF of existing improved building area across multiple structures
- 100-year mission legacy serving children in need, providing prospective tenants an established platform with deep community roots and institutional credibility that cannot be replicated
- Flexible lease structure for nonprofits and for-profits — qualifying nonprofit tenants may negotiate little to no base rent in exchange for full NNN responsibility and a commitment to capital improvements
- Broad eligible use types including early childhood education, daycare, behavioral health, speech and occupational therapy, vocational training, and adaptive recreation
- Premier Loudoun County location — one of the wealthiest and fastest-growing counties in the United States, with over 95,000 children under 15 and documented demand for quality child-focused services that consistently outpaces available supply
Photos
Location Description
601 Catoctin Circle NE is a rare 16-acre campus in the northeast quadrant of Leesburg, Virginia, anchored by Carlheim Manor, a nearly 17,000 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 150 years. The campus includes eight structures totaling approximately 38,000 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 plans for up to 36,850 square feet of new construction designed to accommodate multiple mission-aligned tenants serving children and families.