Rare Infill Development Opportunity - STR Zoned Area | Marina Views 301 Jackson presents a scarce vacant parcel in one of Grand Haven's most supply-constrained short-term rental zones. The lot supports a single-family build by right, and a duplex may be pursued through Special Land Use approval, creating a potential two-unit configuration in a high-demand rental and resale corridor. Marina views and proximity to downtown amenities, waterfront activity, and nearby in/out boat service enhance both resale value and rental performance. At an effective land basis of approximately $125,000 per side (if duplex approved), this site offers compelling unit-level economics for builders seeking margin or investors targeting long-term STR or appreciation play.