86 Islington Street is a small historic condominium conversion on one of Portsmouth's principal downtown streets. The building is identified in current property records as dating to approximately 1800, giving it substantially more historic character than most modern condominium developments in the city. Its location across from the Pearl Street intersection places residents within the established urban fabric of Portsmouth's West End and downtown fringe.

The property is a wood-frame, clapboard-sided historic structure with a stone and brick foundation. Public records identify six condominium units, with individual residences generally occupying portions of the historic building. The architectural character is therefore that of a converted historic Portsmouth residence rather than a purpose-built condominium complex.

Association services reported in public listings include landscaping, plowing, sewer, trash, and hot water. Recent records show condominium charges varying by unit, including approximately $367 per month and a separate listing showing $1,000 quarterly. Shared/assigned parking and landscaped common areas are also documented. No pool, clubhouse, tennis court, or major recreational amenity was identified.

The location offers excellent access to Portsmouth's downtown restaurants, shops, waterfront, cultural attractions, and employment centers. Islington Street also provides direct connections toward the West End, Route 1, and I-95. The combination of historic architecture, small-scale ownership, and a highly accessible urban location makes 86 Islington Street distinctive among Portsmouth condominiums.