Nissho Iwai Tokiwadai Mansion is a nine-storey steel-reinforced concrete building at 1-49-11 Maenocho in Itabashi-ku, completed in March 1978 with 84 residences. It was built by Hasegawa Komuten and is managed by Den-en Toshi Life Support under a fully outsourced contract with a commuting caretaker. The listing material describes the building as meeting current seismic standards. This residence is a south-east-facing 3LDK of 61.60 sq m on the second floor, with a 7.84 sq m balcony.

A full interior renovation is in progress and is scheduled for completion on 9 October 2026. It covers the kitchen, bathroom, washstand and toilet, the wet-area flooring and new flooring throughout, interior joinery, lighting, the water heater with reheating, the shoe cupboard and new wall coverings including an accent wall, followed by house cleaning. The plan gives a living, dining and kitchen space of approximately 12.5 jo with a counter kitchen, and bedrooms of approximately 5.0, 4.5 and 5.0 jo, with a dishwasher, a water purifier, a bathroom dryer, reheating and an insulated bathtub. Pets are considered by consultation under the building rules; office use is not permitted.

• Pets by consultation under the building rules

According to the listing material, a Life supermarket is approximately 300 m (4 minutes on foot), a My Basket store approximately 350 m (5 minutes), a Matsumoto Kiyoshi drugstore approximately 450 m (6 minutes) and a Seven-Eleven approximately 67 m (1 minute). The listing material names Itabashi Fujimidai Primary School and Itabashi Shimura Daiichi Junior High School as the local schools.