Welcome to 25 Piermont Street, a beautifully renovated and meticulously maintained 4-bedroom, 2-bath home in one of Watertown's most desirable neighborhoods. This move-in-ready property features gleaming hardwood floors, central air, updated systems, a new roof (2025), and professionally landscaped grounds. The bright, inviting interior offers two updated kitchens and renovated bathrooms, including a first-floor bath with radiant heated floors. The finished walkout lower level, complete with a second kitchen and separate entrance, provides exceptional flexibility for extended family, guests, a home office, recreation space, or potential ADU, subject to buyer due diligence and required approvals. Architectural plans for a potential second-floor addition are available. Conveniently located near Watertown Square, Arsenal Yards, parks, shopping, dining, public transportation, and major commuter routes.