# Mori Building

Mori Building is a Corporate Investor based in Tokyo, Japan.

## Overview

- **Organization type:** Corporate Investor
- **Headquarters:** Tokyo, Japan
- **Region:** Asia
- **Address:** Tokyo, Japan
- **Founded:** 1959
- **Assets under management:** Undisclosed
- **Website:** mori.co.jp
- **LinkedIn:** https://www.linkedin.com/company/mori-building
- **Wikidata:** Q1770691

## Regulatory record

- **Reports private funds:** No

## About

Mori Building is a privately held Tokyo developer that pioneered Japan’s integrated megaproject model. Its 2003 Roppongi Hills complex placed offices, residences, retail, a museum, and a broadcast facility onto a single superblock, furnishing Goldman Sachs with its flagship Tokyo base. That template now repeats across the Azabudai Hills and Toranomon Hills districts, each layering cultural venues, international hotels, and transit hubs into mixed-use towers. The firm deploys its own balance sheet into long-duration urban consolidation. Its portfolio spans office, residential, retail, hospitality, and cultural real estate, with stage coverage from land assembly through stabilized operations. Recent commitments include a ground-up redevelopment at 346 Madison Avenue in New York with co-investor SL Green Realty Corp. (per the firm, May 2026), marking the group’s first US project. Overseas, Mori holds leasing positions in Shanghai and Jakarta, and operates golf facilities, spas, and country clubs in Japan. Mori Building also runs a dense cultural and hospitality infrastructure: the Mori Art Museum, Tokyo City View, Academyhills, and Andaz and Janu hotels under the Hyatt umbrella. Its philanthropic ventures remain embedded within the corporate structure rather than operating as a separate foundation. In May 2026, the firm announced a concurrent change in representative director, signaling a generational transition at the top. Mori Building differs from most Japanese real estate companies in its refusal to fragment prime districts into single-use silos. It assembles contiguous urban parcels over decades, constructs super-tall mixed-use towers, and retains them as operating assets — a vertically integrated posture that gives it unusual control over the tenant mix and long-term neighborhood economics of central Tokyo.

## Sectors

- Real Estate
- Infrastructure

## Offices

- Shanghai, China
- Jakarta, Indonesia
- New York, NY, United States

## Questions

### How does Mori Building finance its multi-decade development projects?

The firm has historically relied on retained earnings, bank borrowings, and select co-investment partners such as SL Green Realty Corp. for its first US project at 346 Madison Avenue. Unlike publicly listed Japanese developers, Mori Building discloses no external limited partners and does not raise opportunistic funds, giving it the latitude to hold assets through full market cycles.

### What is the scale of Mori Building’s owned portfolio?

Mori Building does not publish an AUM or net asset value. Its known operating properties include the 54-story Roppongi Hills Mori Tower, the Azabudai Hills multiphase complex, Toranomon Hills, Ark Hills, Omotesando Hills, and Laforet Harajuku, as well as international office assets in Shanghai and Jakarta. The firm’s balance sheet size is Undisclosed.

### Does Mori Building invest outside Japan?

Yes. It maintains leasing operations in Shanghai and Jakarta and began its first US development in 2026 at 346 Madison Avenue in New York, partnering with SL Green Realty Corp. The overseas footprint remains concentrated in large-scale office and mixed-use projects with co-investors.

## Related profiles

- [Moriah Partners](https://altss.com/profile/moriah-partners)
- [Moringa Partnership](https://altss.com/profile/moringa-partnership)

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Last updated: 2026-06-03T20:00:00.000Z

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