Megalon Oimachi is an eleven-storey steel-reinforced concrete building with a flat roof at 1-21-8 Oi in Shinagawa-ku, completed in June 1979, with 166 residences, in a commercial zone; it was built by Hasegawa Komuten. The building permit was issued in May 1978, under the seismic standard in force before June 1981, and no seismic diagnosis is recorded. Management is fully outsourced to Gojinsha Keikaku Kenkyusho, with a caretaker on duty. The entrance has a night-time auto-lock from 23:00 to 5:00 (not linked to the residences) and the building has security cameras. The mechanical car park was renovated in January 2026; parking is listed at JPY 20,000 to 25,000 per month, subject to availability. Pets are not permitted and office use is not permitted.

This residence is a 1LDK with a walk-in closet, 44.33 sq m on the tenth floor, with a 6.48 sq m balcony. The plan has a living, dining and kitchen space of approximately 11.0 jo, a bedroom of approximately 6.5 jo, a new walk-in closet, shoe cupboards and a hall cupboard, and a separate bathroom, washroom and toilet. An interior renovation is under way and is scheduled for completion on 11 December 2026, covering replacement of the kitchen, bathroom, washstand and toilet, wet-area flooring and new flooring throughout, joinery and lighting, the electric water heater (with reheating), a shoe cupboard and new wall coverings with an accent wall, followed by house cleaning. The listed equipment includes a face-to-face kitchen (W1974) with a dishwasher and water purifier, and a 1316-size bathroom with reheating, an insulated tub and a drying unit. Internet is by individual contract. The residence is vacant, with handover by arrangement.

• Night-time auto-lock (23:00–5:00) and security cameras; mechanical car park renovated in January 2026; vacant; pets not permitted

The listing material lists a My Basket (Oimachi 2-chome) approximately 200 m away (2 minutes on foot), a 7-Eleven (Oimachi Ekimae Chuo-dori) approximately 60 m (1 minute), Ito-Yokado Oimachi approximately 280 m (3 minutes) and OIMACHI TRACKS approximately 280 m (3 minutes).