RARE FIND in Arlington's coveted Jason Heights neighborhood... conveniently located in the sought-after Brackett / Bishop School Zone! Welcome to 54 Temple St, a 5-level Colonial Revival hidden behind a classic New England Cape façade. Prominently perched on a large corner lot with a 2-car attached garage, this beautiful home offers quick access to Menotomy Rocks Park, shopping & restaurants, and architectural character you simply cannot replicate today. 2026 updates include FULL interior & exterior paint, NEW overhead light fixtures & newly refinished, gleaming hardwood floors! New boiler installed in 2018 and the roof is only 10 years young! Step inside and the foyer greets you with a beautiful winding staircase. The sun-drenched 27' living room is adorned with exposed wood beams & a dramatic knotty-pine accent wall that frames a wood-burning fireplace. The adjoining sunken sunroom is wrapped in casement windows and topped with a knotty-pine ceiling - a PERFECT place to sip your morning coffee or snuggle up with a book & enjoy the cross-breeze! The floor plan flows effortlessly, connecting kitchen/dining/living & sunroom - a true layout for entertaining! The kitchen features oak cabinetry with custom sliding shelves, floor-to-ceiling pantry cabinets, lazy Susan, Miele gas cooktop, wall oven & arched breakfast nook. Off the kitchen, a fenced-in side yard encloses the in-ground pool & opens to the large front yard - seamlessly connecting indoor / outdoor living! The main level is complete with a convenient 1/2 bath & home office that can easily be converted to a 4th bedroom. Upstairs, the center hall opens to below & connects a full bath with tub, large linen closet, 2 spacious bedrooms (each with a walk-in closet) and a sun-filled 27' primary bedroom! The primary BR has a dedicated sitting room, en-suite bath, custom built-ins, louvered closets + a walk-in closet with a secret door that leads to the walk-up attic. The attic already has hardwood flooring, making this a fantastic place for storage (or an easy room to finish)! The partially finished lower level houses a 30' BONUS room with knotty-pine walls & a timeless arched-stone fireplace - ideal for those seeking a dedicated guest space without compromising privacy! The walk-out sub-basement allows easy storage for outdoor equipment (or an exciting opportunity to expand)! See photos for floor plans!