Welcome to 12 Griffen Ct, Miller Place! Located in the desirable North Harbor community and just a short distance to Cedar Beach. This updated and spacious colonial offers over 4,000 sq ft of living space with (5) generously sized bedrooms with the potential for a (6th or Nursery) & (3) Full Bathrooms. Features include a new EIK with propane cooking, formal den with vaulted ceilings, new molding throughout, flooring and staircase. You’ll love the separate mudroom with sink and fridge, and a full bath on the first floor perfect for extended family or overnight guests. The enormous full basement has high ceilings, a separate entrance, new boiler and hot water heater, sump pump, and dual upgraded electrical panels. Upstairs boasts a new primary bath, catwalk, balcony, laundry, and flexible space for a nursery or large closet. Outside offers a fenced yard just shy of an acre, new decking, fire pit, renovated shed, and new awning. This beauty also includes multiple zone CAC, propane and wood-burning fireplaces, in-ground sprinklers, an oversized 2-car garage and a beautifully well manicured yard! Do not miss the opportunity to make this yours in one of the most desirable communities on the Long Island Sound!