Investment Opportunity: Turn-of-the-Century Waterfront Two-Family Home with ADU.Seize this rare chance to own a turn-of-the-century, formally crafted waterfront gem at 18 Elm St, Northfield, NH. Originally a single-family home, this 3,467-square-foot property was thoughtfully converted into a two-family residence with a newly permitted ADU on the third floor. The potential layout consists of: Unit 1 (1st Floor): Two large bedrooms, formal living room, a kitchen, full bath, and private porch.Unit 2 (2nd & 3rd Floors): Up to four bedrooms, a porch, and ADU for added flexibility. Additional Features: Walk-out basement, new roof, and reframed 3rd floor post-2022 fire. Investment Highlights: Estimated Rents: $2,000–$2,700/month per 3-bedroom unit, plus $1,200–$2,000 for the ADU, yielding $5,200–$7,400/month total. Construction Costs: $57,400–$85,300 to complete (plumbing, electrical, insulation, sheetrock, carpentry) ROI Potential: Annual rental income of $62,400–$88,800 against costs of $57,400–$85,300 offers a 5–7 year payback, with 24–35% property value increase post-ADU completion. Prime Location: Waterfront setting enhances desirability and rental demand. Act now to transform this historic property into a high-yield investment!