Residential buildable lot measuring 50-by-127 feet with alley access. Site is ready for development, with architect-designed plans for a two-bedroom, two-bath carriage house/accessory dwelling unit (ADU) and survey available upon request. In proximity to the Gulfport Arts District, Gulf beaches, golf, Pasadena Yacht & Country Club, and multiple dining and shopping venues. The area is golf cart-friendly, providing convenient access to local destinations. The property sits approximately 16 feet above sea level in Flood Zone X, which FEMA does not classify as high-risk flood area. Flood insurance is not required. The adjacent home at 5518 21st Avenue S (MLS #TB8397347) is available separately or together with this parcel to create a larger residential estate.