Blackstone Apartments, Apartment building in Capitol Hill, Seattle, US.

The Blackstone Apartments is a 1927 brick apartment building at 222 Summit Avenue East in Capitol Hill, Seattle, with 26 units ranging from two- to six-room suites. Its interiors carry extensive mahogany woodwork and built-ins, and the raised first floor keeps passersby from seeing into the units.

The complex was built in 1927 by J.S. Long and the Long Building Company during a period of significant architectural growth in Seattle. The project was part of a wave of residential construction that shaped the city during that era.

Capitol Hill was one of Seattle's wealthier districts in the early 20th century and is now known as the city's gay village. The Blackstone is among the few pre-World War II apartment complexes left in the neighbourhood, since most later buildings replaced large windows and privacy with uniform courtyards.

The building stands at 222 Summit Avenue East and is easy to find while exploring Capitol Hill on foot. Keep in mind that this is a private residential complex, so the exterior view from the street provides the best perspective.

The sale to John J. Freeley, acting for Mrs. Ada Parfitt, was reported as "the largest deal of the kind" in Seattle; the next closest apartment sale, the Rosemont Apartments, fetched $56,000. The deal closed only weeks after the 1929 crash, when buyers still saw real estate as safer than stocks.