Lions Mansion Higashi-Oi is a four-storey reinforced concrete building with a flat roof at 1-4-29 Higashi-Oi in Shinagawa-ku, completed in August 1980 with 17 residences, in a quasi-industrial zone. The building permit was issued in February 1980, under the seismic standard in force before June 1981, and no seismic diagnosis is recorded. Management is fully outsourced (managed by Daikyo Astage), with a visiting caretaker. The listing material records major repair works in March 2018, renewal of the common-area water-supply pipes in December 2020 and steelwork painting in March 2026. There is no lift and no parking. Pets are not permitted and office use is not permitted.

This residence is a south-east-facing corner 2LDK of 46.47 sq m on the third floor, with light from two sides and a 7.99 sq m balcony. An interior renovation is scheduled for completion on 4 December 2026, covering replacement of the kitchen, bathroom, washstand and toilet, the wet-area flooring and new flooring throughout, joinery, lighting and the electric water heater (with reheating), a shoe cupboard and new wall coverings with an accent wall, followed by house cleaning. The plan provides a living, dining and kitchen space of approximately 11.2 jo with a 2,100 mm kitchen, and Western-style rooms of approximately 4.5 and 3.9 jo, each with a closet. The listed equipment includes a dishwasher, a water purifier and a 1316-size bathroom with an insulated tub, reheating and a drying unit. The residence is vacant, with handover by consultation.

• Major repair works in March 2018, common-area water-supply pipe renewal in December 2020 and steelwork painting in March 2026

The listing material lists a Lawson (H Samezu) approximately 135 m away (2 minutes on foot) and an OK supermarket (Aomono-Yokocho) approximately 502 m (7 minutes).