406 15th Street 406 15th Street, Unit B presents a turnkey commercial office opportunity located in the heart of Park Slope, positioned at the base of a 27-unit residential building along a high-traffic corridor between 7th and 8th Avenues. The space is situated on the lower level of a well-maintained elevator building and offers a quiet, private setting ideal for medical, wellness, or professional service users. The unit consists of a windowed office with natural light, along with a separate private entrance and dedicated waiting area, providing both discretion and functionality for client-facing businesses. Additional building amenities include access to a shared bathroom and on-site laundry facilities. Parking is available for lease, along with optional bike storage, further enhancing convenience for both tenants and clients. The property benefits from strong accessibility, located just one block from the F and G subway lines at Prospect Park, and is surrounded by a dense and affluent residential population. Its positioning between South Slope and Windsor Terrace places it within one of Brooklyn's most established and desirable neighborhoods, known for consistent foot traffic and a strong local customer base. This offering is well-suited for practitioners or small businesses seeking a cost-effective, move-in ready space within a high-demand submarket.