Rare opportunity to acquire a 0.19-acre building lot in the heart of East Mt. Airy, directly adjacent to the newly built luxury residence at 615 E. Mount Pleasant Avenue. This parcel could be purchased in combination with 615 E. Mount Pleasant. Purchased together, the two properties create something virtually unheard of in Philadelphia: a brand-new luxury home paired with a private, nearly quarter-acre side yard ideal for gardens, outdoor entertaining, a pool, or simply the kind of breathing room that almost never exists in the city. For the right buyer, this is a chance to assemble a true urban estate on one of Northwest Philadelphia's most desirable streets. Alternatively, 613 E. Mount Pleasant stands on its own as a shovel-ready development opportunity. The lot conveys with approved subdivision and architectural plans for a luxury single-family home, eliminating months of pre-development work, design fees, and entitlement risk. A builder or end-user can move directly to permitting and construction, with 615 E. Mount Pleasant next door serving as a built comparable for finish level and value. Situated on a quiet, established block in East Mt. Airy, the property offers approximately 50 feet of frontage with generous depth on a level, rectangular site. The location provides easy access to Wissahickon Valley Park, Chestnut Hill, Germantown Avenue's shops and restaurants, and Center City via Stenton Avenue, Lincoln Drive, and SEPTA Regional Rail. Lots of this size, readiness, and location rarely come to market in Northwest Philadelphia.