0.37 acres in Fairfax County, VA

VIRTUAL AUCTION List price is the opening bid, not the final sale price. Sold via virtual auction on the listing brokerage's website; property conveys AS-IS, WHERE-IS, no contingencies. A 10% Buyer's Premium is added to the high bid to determine the final contract price. 30 day close. Auction ends July 29, 2026 at 2:00 PM. Please review full terms and conditions on the listing company's website Rarely does a Fairfax County homesite hit the market with the hardest, most expensive development work already done! This 16,158 SF ( 0.371-acre) wooded lot in established Gunston Manor is a construction-ready opportunity for builders, investors, and future homeowners in desirable Lorton, VA. Standout feature: a completed, approved onsite sewage and water package. A fully engineered AOSE/PE system by Soils Inc., PE-stamped, is designed for a 5-bedroom home with a MicroFAST 0.75 aerobic treatment system, UV disinfection, and pressure-dosed low-pressure drainfield plus a fully engineered 100% reserve drainfield for added long-term value. Also includes an approved Class IIIB private well permit and Fairfax County Health Dept certification of compliance. Stamped engineering plans, drainfield/pump calculations, soil reports, and a recent topo survey by Apex Surveys, LLP convey to the buyer potentially saving months of planning, permitting, and engineering costs. Tucked off Barberry Trail near Gunston Road, enjoy a private wooded setting minutes from Fairfax County Parkway, Route 1, Fort Belvoir, Alexandria, and DC. Nearby: the Potomac River, Gunston Hall, Pohick Bay Regional Park, and Mason Neck State Park. Engineering complete. Permits approved. Documentation in hand. Bring your plans and start building!