1221 Castle Street, Wilmington

Prime mixed-use development opportunity in Wilmington's rapidly revitalizing Castle Street corridor. This approved development site offers plans for a thoughtfully designed three-story mixed-use building featuring approximately 2,580 square feet of ground-floor commercial space and 18 residential units above. The residential component includes a mix of studio, one-bedroom, and two-bedroom units, with the potential for rooftop amenity space. Designed to meet current city street-front standards, the concept features prominent frontage along both Castle Street and 13th Street, generous storefront glazing, separate commercial and residential entrances, and a pedestrian-oriented design that complements the character of the surrounding neighborhood. Ideally located near Downtown Wilmington, the property presents a rare urban infill opportunity within an area experiencing continued investment and growth. The approved commercial space offers flexibility for neighborhood retail, boutique office, professional services, or other compatible uses, while the residential units are positioned to appeal to renters or future condominium buyers seeking a walkable, downtown-adjacent lifestyle. Located within a designated Federal Opportunity Zone, the property may also offer potential tax advantages for eligible investors. Portside represents a unique opportunity to acquire an approved, development-ready mixed-use project in one of Wilmington's emerging urban corridors.