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Asset Castle

Selected Real Estate Opportunities for Investment, Development, and Strategic Projects in Japan

Selected real estate opportunities across Japan, including infrastructure land, development sites, income-producing properties, hotels, resorts, and other strategic assets.

Access selected public and off-market opportunities tailored to your investment and development requirements.

In addition to the properties presented on this website, Asset Castle also handles selected off-market and confidential real estate opportunities across Japan.

Please contact us to discuss your investment, development, or acquisition requirements.

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Private opportunities are available upon request.​

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Information on private and confidential opportunities is shared selectively based on your requirements and project availability. Please contact us to discuss current opportunities.

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Discuss Your Requirements

TOPICS

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2026.10.15​

・Ski-in Ski-out Madarao Condo Apartment

    Mainland Japan / Nagano / Madarao

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Strategic Real Estate Opportunities

Key Focus Areas

Asset Castle provides access to selected real estate investment and development opportunities across Japan.

Our portfolio includes land for energy and digital infrastructure projects, development sites, income-producing properties, hotels, resorts, and other strategic real estate assets in key locations throughout the country.

We focus on commercial viability, location, and development potential, providing opportunities to domestic and international investors and developers. In addition to the properties presented on this website, we also handle selected off-market and confidential opportunities that are not publicly listed.

Asset Castleは、日本全国の選定された不動産投資・開発案件をご紹介しています。

エネルギー・デジタルインフラ関連用地、開発用地、一棟収益物件、ホテル・リゾートなど、全国の主要エリアにおける様々な不動産案件を取り扱っています。

事業性、立地条件、開発可能性を重視し、国内外の投資家・開発事業者の皆様に不動産情報をご提供しています。また、本サイトに掲載している案件のほか、一般公開していない非公開・限定案件も取り扱っています。

Strategic Project Categories

現在ご案内中の重点プロジェクトカテゴリー
Explore selected off-market opportunities across key project categories in Japan.
Each category represents carefully reviewed real estate opportunities with strategic location, project feasibility, and long-term value potential.

日本国内の重点プロジェクトカテゴリーごとに、非公開不動産案件をご案内しています。
各カテゴリーは、立地条件・事業性・開発可能性を重視し、将来的な価値向上が見込める案件を中心に掲載しています。

Battery storage and data center development site in Japan

Energy Infrastructure Sites​

Strategic sites for battery storage, data centers, and power-related facilities

電力インフラ用地

Off-market land opportunities for battery energy storage, data centers, substations, and other energy and digital infrastructure projects.

Initial Release:
6 Site Scheduled
Development land for battery storage, data centers, and energy infrastructure in Japan

Development Land

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Selected land opportunities for commercial, industrial, resort, and mixed-use projects

戦略的開発用地

Selected land opportunities for commercial, residential, resort, and mixed-use developments across Japan.

Initial Release:
2 Opportunities Scheduled
ホテルラウンジ

Real Estate Investment Opportunities

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Private opportunities including income-producing assets, hotels, and special investment projects

厳選不動産投資案件

Selected investment opportunities including hotels, ryokans, apartment buildings, houses, penthouses, and commercial properties.

Initial Release:
3 Opportunities Scheduled

Strategic Focus Regions

重点対応エリア
Asset Castle sources selected real estate opportunities across Japan, with strong experience in Hokkaido and other strategically important regional markets.

Hokkaido

Strategic opportunities across infrastructure, large-scale development, hospitality, and selected investment projects.

Greater Sapporo

A key urban investment market offering income-producing assets, redevelopment, hospitality, and commercial opportunities.

Central Hokkaido

Large-scale land opportunities for infrastructure, industrial use, and development projects.

Selected Markets Across Japan

Selected development, hospitality, income-producing, and special investment opportunities across Japan.

Hokkaido for Energy & Digital Infrastructure Development

エネルギー・デジタルインフラ開発における北海道の可能性
Hokkaido is attracting increasing attention as a potential location for energy and digital infrastructure development. Its abundant land, cooler climate, access to power infrastructure, and capacity for large-scale projects create opportunities for battery storage, data centers, and other infrastructure-related developments.

Energy & Power Infrastructure

Suitable land for battery storage, grid-related facilities, and other energy infrastructure projects requires careful consideration of site scale, access, and proximity to power infrastructure.

蓄電所、系統関連施設、その他エネルギーインフラ関連プロジェクトでは、用地規模、アクセス、電力インフラとの位置関係などが重要な判断要素となります。

Data Center Potential

Hokkaido’s cooler climate, available land, and potential access to power and digital infrastructure make it a region worth considering for data center development.

北海道は、冷涼な気候、比較的確保しやすい用地、電力・デジタルインフラへの接続可能性などから、データセンター開発の候補地として検討価値のある地域です。

Strategic Land Availability

Large-scale and well-positioned land with suitable access and development conditions can create opportunities for infrastructure, industrial, and other strategic projects.

大規模で立地条件に優れ、アクセスや開発条件を備えた用地は、インフラ、産業施設、その他の戦略的プロジェクトにおいて重要な事業機会となります。

1,300+ ha
Energy Infrastructure Site Opportunities
Asset Castle provides access to energy infrastructure site opportunities with a combined area exceeding 1,300 hectares.

Private Opportunity Process

About
PLUS AGENT

Private Opportunity Contact

非公開案件ご案内の流れ
戦略的不動産案件を扱う
宅地建物取引業者について
非公開案件に関するお問い合わせ
01. Initial Inquiry & Requirements
We first confirm your project type, preferred region, land size, power-related requirements, and investment criteria.
02. NDA & Private Disclosure
For selected opportunities, detailed information is disclosed privately after confirming the project background and, where necessary, executing an NDA.
03. Site Review & Feasibility Check
We support the review of key site conditions, including access, scale, surrounding environment, legal restrictions, and development feasibility.

PLUS AGENT Inc. is a licensed real estate brokerage in Japan, providing private real estate services for domestic and international clients. Through Asset Castle, we focus on selected off-market opportunities in Hokkaido and other strategic regions, including energy infrastructure sites, data center-related land, development land, and selected investment properties.

Our role is to identify practical opportunities, coordinate confidential information disclosure, and support negotiations and transactions with transparency, speed, and discretion.

If you are seeking current or upcoming off-market opportunities in Japan, please contact us. We provide private information based on your project type, site requirements, investment criteria, and preferred regions.
04. Negotiation & Transaction Support
We assist with negotiations, documentation, and transaction coordination through to agreement or acquisition.
NAME
EMAIL ADDRESS
Licensed Real Estate Company in Japan
Hokkaido Governor License
(Ishikari) (2) No.8902
COUNTRY / REGION
INVESTMENT  BUDGET
MESSAGE
✔ Off-market opportunities  
✔ Not publicly available listings  
✔ Tailored to your investment criteria
PLUS AGENT supports private real estate transactions with transparency, speed, and professional integrity.

Operating Company  
PLUS AGENT Inc.

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Real Estate Broker License:
Hokkaido Governor License

(Ishikari) (2) No. 8902

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Member Associations:
All Japan Real Estate Association
Real Estate Guarantee Association


Address:

3F, 3-1-2 Minami 6-jo Higashi
Chuo-ku, Sapporo, Hokkaido 060-0056, Japan

Private Opportunities

About Asset Castle

Asset Castle logo

Contact:   

contact@plus-agent.net

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©2026 PLUS AGENT Inc.

We provide discreet, off-market real estate opportunities in Japan for energy infrastructure, data center, development, and selected investment projects.

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