551 N Route 25A 5,925 SF 100% Leased Office Building Saint James, NY 11780 $2,500,000 ($421.94/SF) 5.26% Cap Rate

Frontline Realty Group is pleased to present the exclusive offering of 551 Route 25A, Saint James, NY, a ±5,000 SF professional office building situated on .74 acres in one of Long Island’s most prestigious and high-demand corridors. With 30+ dedicated parking spaces, prime signage, and visibility to over 30,000 vehicles per day, this asset combines modern construction, strong demographics, and significant financial upside.
Originally renovated in 2015, the property offers a flexible multi-tenant layout ideal for medical, legal, or professional office use. The first floor consists of a full-floor ±2,800 SF suite with private conference room and two restrooms. The second floor features five professional office suites totaling ±3,000 SF with shared bathroom facilities. The basement provides a ±1,500 SF suite with egress windows, private entrance, private bath, and a large unfinished storage area. In total, the building includes five bathrooms and a communal conference room, enhancing usability for a wide range of tenants.
Financially, the property represents a true value-add investment. Current leases are under-market and all expiring soon, offering immediate rent growth. Stabilized pro forma rents support a gross potential income of $188,400 annually, with NOI of $115,215 under current expense structure and $131,538 with utilities passed to tenants. At the asking price of $2,500,000, this translates into a potential 5.26% cap rate, an attractive return in a supply-constrained suburban office market.
Key Investment Highlights
Prime Saint James location with affluent demographics and established professional/medical demand
Fully renovated since 2015 with modern finishes, strong curb appeal, and functional layout
High-traffic visibility with exceptional signage along Route 25A
Parking for 30+ vehicles, rare for comparable properties in the market
Immediate upside through market rent adjustments and tenant utility pass-throughs
Suitable for both investors seeking stable income with growth and owner-users seeking a flagship headquarters
?? 551 Route 25A offers the perfect balance of location, quality, and financial performance—delivering a rare opportunity to acquire a premier suburban office property with built-in upside in one of Long Island’s most desirable communities.