Tokan Mansion Kaga Koen is a nine-storey steel-reinforced concrete and reinforced concrete building with a flat roof at 47-17 Nakajuku in Itabashi-ku, completed in June 1984 and built by Tokai Kogyo and Nippon Lease, with 107 residences and a supermarket open until midnight on the ground floor. Management is fully outsourced to Nihon Housing, with a caretaker on site. According to the management report, the repair reserve stood at JPY 445,737,529 as of 30 June 2025, with no borrowing and no arrears, and the listing material notes a long-term repair plan. The building has a monitor intercom, a delivery box and security cameras. Pets and office use are not permitted. Parking is JPY 27,000 per month, with no vacancy.

This residence is a 3LDK of 66.81 sq m on the third floor with a 5.92 sq m balcony. The plan provides an LDK of approximately 14.6 jo, three bedrooms of approximately 5.3, 4.5 and 4.4 jo, a walk-in closet, closets and a hall storage cupboard, and a separate 1216-size bathroom, powder room and toilet. An interior renovation is under way and is scheduled for completion on 15 January 2027, covering replacement of the kitchen, bathroom, washstand and toilet, wet-area flooring, new flooring, joinery and lighting, the water heater (with reheating), a shoe cupboard and new wall coverings throughout with an accent wall covering, followed by house cleaning. The listed equipment includes a face-to-face kitchen with a dishwasher and a water purifier, and a bathroom with a drying unit, reheating and an insulated tub. The residence is vacant, with handover by consultation.

The listing material notes a Life supermarket (Nakajuku) approximately 18 m away, a Kokokara Fine drugstore approximately 61 m away, a Seven-Eleven approximately 190 m away and Teikyo University Hospital approximately 800 m away, together with Higashi-Itabashi Park and the Itabashi Children's Zoo; the school district is Itabashi Daiichi Elementary School and Itabashi Daisan Junior High School.