1610 DUFFEY Drive 30 Lots in Bull Run Mountain Estates subdivision with completed GIS Engineering and Conceptual Homesite Plans!! The largest single landowner on the mountain is offering the unique opportunity to purchase ALL lots in a single, portfolio transaction. All lots are subdivided, ready for home site development and construction. Public water available, septic not yet approved. Parcel Profile: 21 acres total, 25 Lots 0.57 to 0.76 acres, 5 Lots 1.25 acres. 29 of 30 Lots are contiguous, offering abundant opportunity to combine parcels and assemble for the optimal number of homesites and marketability. SPECIAL FEATURES: The seller hired a local engineering company with significant experience on Bull Run Mountain to conduct preliminary land planning and prepare multiple conceptual layouts for optimal homesite configurations accounting for zoning regulations, topography and environmental conditions, and drain field considerations for septic. The ENGINEERING SHOWS (3) LAND PLAN CONFIGURATIONS yielding (27) homes (predominantly 3BR perc), (16) homes (predominantly 4BR perc), or (15) homes (predominantly 5BR perc). Engineering, Pro Forma Lot Yield Configurations, and detailed CAD schematics are available for qualified buyers. Prince William County Zoned A-1 (Agriculture). Lots located at the top of the mountain with the most scenic views of Loudoun Valley (Duffey Dr, Duffey Ct, Warburton Dr, Summit Dr). Close access to Rt 15. 7 miles to downtown Haymarket. 2 miles to Rt. 50 & Gilbert's Corner. Battlefield HS Pyramid. New construction selling for $1, 000, 000+ offers a Developer/Builder exceptional ROI opportunity between land acquisition cost, land development costs, and outsale revenue on new home sales. Developer-Builder Ready | Develop & Build | Combine Parcels for Higher & Better Use | Investor - Buy/Hold. OFFER DEADLINE: WEDNESDAY, JANUARY 21, 2026 (5:00 PM).