3730 N Kostner Avenue Fantastic investment opportunity in highly sought out neighborhood Old Irving Park on oversized lot 35x150!! Impressive versatile property on a beautiful, quiet tree-lined street surrounded by lovely homes and neighbors. Occupy one and rent out the other for extra income, rent out both units for an amazing return, or convert to single family home. Long time homeowners of 27 years made several improvements: all plumbing, electrical, dry-wall, installed central heat and air (dual zoned), new roof, garage concrete floor, garage siding, added large heated front porch (great for cold nights), kitchen and bathroom rehab, stainless steel appliances, 2 tankless water heaters (95% energy efficient), custom stain glass front door, refinished hardwood floors, smart thermostats, pergola, installed ice melter in gutters, and list goes on! First floor comprises of a duplex down with 3 bedrooms plus office, 2 full bathrooms, one is a large bedroom (combined 2 rooms) with custom barn doors, chef's kitchen with granite countertops, maple cabinets, large pantry, 50 ft long basement family room, laundry room with 2nd full refrigerator and exit access from basement (you can turn basement into an in-law suite). 2nd floor consists of 3 bedrooms plus office in back off kitchen, 1 bathroom, built in original hutch, washer/dryer in-unit, large kitchen vent, huge pantry. Enjoy entertaining guests in spacious backyard with concrete patio and pergola along with an extra large 2 car garage. Owner currently lives on 1st floor (market rent is $3200-3400) and tenant of 7 years rents unit upstairs for $1500 (never raised rent but currently market rent is $2100-2200). Only a 2 min drive to expressways for easy commute to city or suburbs, walk to Grayland Metra, CTA blueline, CTA buses. Two blocks from Starbucks, and walking distance to Backlot Coffee, Lou Malnatis, Chicago's Pizza, Smoque BBQ, Jewel/Osco, Potbelly, brand new Target, Aldi, Northwestern Memorial facility, Kilbourn Park, playgrounds and much more! Close to Belding Elementary, Disney II Magnet schools. Streets are not permitted so easy for guests to find parking. Feels like a suburb in the city!