669 Sqm Of Uninterrupted Pacific — A Singular Residence Within Japan's Rarest 0.1%

Property Highlights:
The site spans 939 sqm of freehold land (546 sqm + 393 sqm) in an area outside the City Planning Zone with no use-district designation — a rare condition that removes the density and height constraints typical of urban Japan, and one that will not recur along this coastline. The land sits directly on the Pacific, on a 13-metre bluff, with nothing between the property and the water. The frontage opposite is designated Class II Quasi-National Park — meaning the ocean view ahead is permanently protected from future development. This is oceanfront, unobstructed, in perpetuity.

The residence extends across 669 sqm of reinforced concrete over two levels, completed December 2023 to a design by architect Kenzo Tabe of KENZO Architects & Associates — winner of the BLT Built Design Award (2024), MUSE Design Awards Gold (2024), and the Kyoto Global Design Award (2024). Four bedrooms across two distinct pavilions, conceived as ”the Sea Pavilion” and ”the Moon Pavilion,” each offering its own relationship to the water and the sky. A rooftop terrace with uninterrupted Pacific views. A private sauna. A dedicated meditation and theatre room. Two parking spaces.

This is the first and only residence released under the ADD Residences program — a single villa on a single site, with no further units to follow. Surface yield of 5.87% and net yield of 3.49% represent the highest return profile within the ADD portfolio, well above Japan’s national hotel-condominium average (CBRE: surface 3.5–4.5%, net 2.0–3.0%).

The building integrates Alternative Earth Shield EMF-mitigation construction — the first application of its kind in Japan (as of July 2022) — alongside whole-residence water filtration, a bespoke organic fragrance composed by one of fewer than 100 master perfumers worldwide, and organic-certified linens and amenities throughout. Wellness is engineered into the architecture, not layered on top of it.

The Neighbourhood:
Minamiboso, in the Chikura district of Chiba, is one of the last true frontiers within reach of Tokyo — often described locally as Kanto’s own hidden wilderness. A 90-minute drive from central Tokyo places it close enough for a weekend, far enough to disappear. The climate is temperate year-round; the region is the historical birthplace of dairy farming in Japan, and its waters and hillsides yield some of Kanto’s finest seafood and produce.

The area is undergoing a quiet but significant transformation. THE MAGARIGAWA CLUB — the world’s first members-only driving club — opened nearby in 2023, and Accor’s Grand Mercure Minamiboso followed in 2024, both signalling serious institutional confidence in the region’s future. Land prices along the Minamiboso oceanfront rose 180% between 2022 and 2025, among the sharpest appreciation curves of any coastal market in Japan.

Of Japan’s roughly 1.34 million hectares of national and quasi-national parkland, only around 1,385 hectares — some 0.1% — sit directly on the coast with no intervening development. This villa occupies exactly that category of land.

Why TonTon:
This is the kind of asset that does not reach the open market through conventional channels. As the exclusive Japan licensee of Forbes Global Properties, TonTon operates at the precise intersection of deep local knowledge and a truly global network — giving our clients access not only to properties of this nature, but to the discretion, due diligence, and cross-border expertise that a transaction of this significance demands.

Our advisory team brings together backgrounds in international finance, Japanese property law, and cross-border transaction management — fluent at a native level in Japanese, English, Mandarin, Hindi, and Korean. From corporate structure establishment and tax advisory coordination to post-acquisition asset management, we provide end-to-end support across the full acquisition journey.

For clients whose ambitions extend beyond the visible, our private portfolio awaits.