Aoyama Mainland

What Aoyama Mainland does

Aoyama Mainland (株式会社青山メインランド; founded April 1988 in Shibuya, Tokyo, converted to a corporation in 1990) is a privately-held Japanese real estate developer and property manager that operates a vertically integrated model spanning land sourcing, branded condominium development, direct sales, and ongoing rental management. Its core products are the Main Stage (メインステージ) brand of investment-oriented studio condominiums (launched 1991) and the Land Stage (ランドステージ) family-residence brand (registered 1999); together with the group these account for 417 buildings and 20,000+ cumulative units supplied, with 12,902 units under active management at a 98% occupancy rate as of April 2025. The proprietary service stack includes a master-lease sublease system (借上契約) under which the company leases units from owners at approximately 90% of set rent and assumes vacancy and collection risk, the Mamori 35 (まもるんど35) 35-year equipment warranty covering an estimated ¥3.2M of maintenance costs, the ONLINESTAGE member portal (online-stage.jp), the AML Club Off lifestyle-benefits program (200,000+ discounted services), and an owner newsletter STAGE (50th issue in 2025). Underlying technology is best characterized as a standardized integrated real estate platform with digital customer interfaces rather than any disclosed proprietary software or AI layer.

Aoyama Mainland generates revenue through three streams: one-time condominium sales under the Main Stage (investment studios) and Land Stage (family residences) brands, recurring property management fees and master-lease economics on managed units, and transaction fees on used-property trading / buyback activity (流通事業). The go-to-market is direct-to-consumer targeting individual property investors — primarily salaried professionals, public servants, and medical professionals aged late 20s to 50s with annual income of ¥5 million or more — supplemented by referral partnerships with financial planners and insurance companies, and direct corporate sales for employee housing (社宅). The geographic footprint is concentrated in the Tokyo metropolitan area including Kanagawa, with Kansai coverage through the wholly-owned Osaka subsidiary Mainland Japan (established 2014). The group comprises three wholly-owned operating subsidiaries — Aoyama Housing Support (building management, 2013), Mainland Japan (Kansai, 2014), and LANDNEXT (customized planning and brokerage, 2016) — and a holding company structure led by Representative Director and President Ryozo Nishihara (西原良三), who has run the company since its 1988 founding. Five consecutive years (2021-2025) of Health Management Excellent Corporation certification signals stable organizational operations.

Name

Aoyama Mainland

Legal name

株式会社青山メインランド

Website

https://aml.co.jp

Company type

Private

Founded year

1988

Operating status

Operating

Short description

Aoyama Mainland is a privately-held Japanese real estate developer and property manager operating a vertically integrated model of investment condominium development, sales, and rental management under the Main Stage and Land Stage brands in the Tokyo metropolitan area, targeting individual property investors earning ¥5M or more annually.

Ownership category

akta.pro rank

Product category

Real Estate Development and Investment Property Management

NAICS

Real Estate Property Managers (53131), Other Financial Investment Activities (5239)

SIC

Operators Of Apartment Buildings (6513), Real Estate Agents & Managers (For Others) (6531)

akta.pro primary industry

Residential Investment Property Brokerage (SFR/Small Multifamily) (BPAJAAAE)

akta.pro secondary industry

Multifamily (Apartment) Property Management (BPAJAGAD)

Keywords

• Investment condominiums
• Property management services
• Real estate development
• Rental property sales
• Guaranteed rent leasing

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Operations, Personnel, Marketing or Sales, Supply Chain, Infrastructure

Revenue model

1. Property Development and Sales: The company develops and sells new condominiums under the Main Stage (investment studios) and Land Stage (family residences) brands primarily in the Tokyo metropolitan area. Revenue is generated through one-time sales transactions to investors and end-users.
2. Property Management Services: Ongoing property management services including tenant sourcing, lease contract administration, rent collection, and maintenance. The company operates a master lease (借上契約) system where they guarantee rental income to property owners regardless of vacancy status.
3. Used Property Trading (流通事業): Purchase and resale of used/existing condominiums for investment purposes, including buyback programs for existing property owners looking to upgrade or divest.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels10 records

Core offering

Aoyama Mainland is a vertically integrated Tokyo-based real estate company that develops, sells, and manages investment-type condominiums (primarily under the Main Stage brand) and family residences (under the Land Stage brand). The company targets individual property investors in the Tokyo metropolitan area with a one-stop offering covering property acquisition, sublease/guaranteed rent contracts, and ongoing property management services.

Product overview

Aoyama Mainland operates as a vertically integrated real estate developer and property manager, offering investment-type and residential condominiums under the Mainstage and Landstage brands. The core offering combines property development, sales, and comprehensive property management services including guaranteed rent (借上) contracts, equipment warranties (まもらんど35), and owner membership programs (ONLINESTAGE, AML Club Off). The company targets individual investors (primarily salaried workers) and owner-occupants in the Tokyo metropolitan area, providing one-stop service from property acquisition through ongoing management and eventual sale.

Differentiator

Problem solved

Functional benefit

Brands

• メインステージ (Main Stage): Primary brand for investment-type condominiums (studio and compact units) targeting asset formation investors
• ランドステージ (Land Stage)

Products and services

• Main Stage Series (メインステージ) Company's primary brand for investment-type studio condominiums targeting individual property investors. Properties are developed, sold, and managed by Aoyama Mainland with optional guaranteed rent (sublease) contracts. The Main Stage series exceeded 400 buildings as of 2023.
• Land Stage Series (ランドステージ) Family-type residential condominium brand offering larger units for households, developed by Aoyama Mainland for owner-occupants and investors in the Tokyo metropolitan area.
• Sublease/Guaranteed Rent Contract (借上契約) Guaranteed rent service where Aoyama Mainland leases units from owners at approximately 90% of set rent, handles all tenant management, and bears vacancy and collection risks. Owners receive stable monthly income regardless of occupancy.
• Mamorando 35 (まもらんどう35) — 35-Year Equipment Warranty 35-year warranty bundled with sublease contracts covering repair and replacement of indoor equipment (air conditioning, water heater, bidet toilet, bathroom dryer) representing approximately ¥3.2 million in expected maintenance coverage over the warranty period.
• AML Club Off Membership Program Member benefits program offering over 200,000 discounted services for property owners and residents to use with family and friends.
• ONLINESTAGE Member Portal Online member portal for property owners providing access to property management information, reports, account statements, and exclusive content. Previously known as AML member's club until 2019 relaunch.
• Property Management Services (賃貸管理事業) Comprehensive rental property management covering tenant sourcing, lease contract administration, rent collection, building maintenance, and asset value enhancement across 12,902 managed units at 98% occupancy (April 2025).
• Used Property Trading / Resale Brokerage (流通事業) Purchase and resale of used/existing condominiums for investment purposes, including buyback programs for existing property owners looking to upgrade or divest holdings.

Quantifiable outcome

• 98% occupancy rate across 12,902 managed units (April 2025)
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered minor and core.

• 南葛SC (Nankatsu SC)minorGTM or Marketing Partner · 1 March 2026Aoyama Mainland entered into a partnership agreement with Nankatsu SC, a soccer club represented by Takahashi Yoichi (author of Captain Tsubasa), to sponsor the team from April 2026. The company logo will be displayed on the back of the team's home uniform shirts as part of the partnership.
• ホリプロ (Horipro)minorGTM or Marketing Partner · 12 February 2026Special sponsorship of the Broadway musical 'Peter Pan' produced by Horipro. The company has sponsored this annual summer musical production for multiple years, with the 2026 performance scheduled for July 27 - August 7 at Tokyo International Forum Hall C.
• 映画『栄光のバックホーム』製作委員会minorGTM or Marketing Partner · 17 October 2025Production cooperation support for the film 'Glory's Back Home' (栄光のバックホーム), a biographical drama about former Hanshin Tigers player Yokota Shintaro, released November 28, 2025.
• DREAMS FOR CHILDREN 2025 in CHIYODA実行委員会minorGTM or Marketing Partner · 10 September 2025Sponsorship of the Dreams for Children 2025 in Chiyoda soccer event, featuring former Japanese national team players including Ono Shinji. The event was held on August 23, 2025.
• WBA (World Boxing Association)minorGTM or Marketing Partner · 9 May 2025Sponsorship of the WBA World Super Flyweight Title Match held on May 11, 2025, as part of the LIFETIME BOXING FIGHTS 27 event broadcast on ABEMA.
• 株式会社青山ハウジングサポートcoreStrategic or Co-development PartnerBuilding management subsidiary company providing professional property management services, combining the Mainland Group's track record with specialized building maintenance expertise.
• 株式会社LANDNEXTcoreStrategic or Co-development PartnerGroup company focused on real estate planning, development, sales, brokerage, and property management services, providing customized solutions based on customer backgrounds and needs.
• 株式会社メインランドジャパンcoreStrategic or Co-development PartnerGroup company in Osaka providing life planning, financial services, and long-term stable asset management services through real estate investment, serving customers in the Kansai region.

Scale indicators7 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• Sansei Landic (株式会社サンセイランディック): Tokyo-based real estate company specializing in small-lot investment properties marketed to individual investors, with property management and resale services. Targets the same HNI buyer profile and urban infill submarkets.
• LeTech (株式会社リーンテック): Japanese real estate developer focused on investment condominiums for HNI individuals, with a similar vertically integrated model of development, sales, and property management. Listed on TSE Growth, making it the most direct comparable for Aoyama Mainland's business model.
• Samty Company (サムティ株式会社): Japan-based developer and owner of rental residential properties with a build-to-rent strategy in major cities. Overlaps with Aoyama Mainland on developing apartment buildings for the rental market.
• Tosei Corporation (株式会社トーセイ): Tokyo-listed real estate firm operating across development, revitalization, rental management, and brokerage, serving both institutional and individual investors in the Tokyo metro area. Comparable mix of in-house property management and redevelopment pipeline.

Broad incumbents

• Comforia Residential REIT: J-REIT focused primarily on Tokyo rental residences, running an institutional portfolio that directly competes with Aoyama Mainland's managed units for the same single-tenant renter pool.
• Daiwa House Industry (大和ハウス工業): Largest Japanese homebuilder and major landlord via Daito Trust and Daiwa House REIT, with broad rental-residential exposure. Serves as a ceiling on Tokyo rental property scale and competes for the same Tokyo-area acquisition opportunities.
• Open House Group (株式会社オープンハウスグループ): Large Japanese homebuilder and condominium developer with material operations in Tokyo single-family and small multifamily. Broader portfolio but overlaps significantly in the Greater Tokyo urban-condo segment Aoyama Mainland sells into.
• Advance Residence Investment Corporation: J-REIT focused on Tokyo-area rental residential properties, operating a much larger institutional portfolio but competing directly for the same tenant pool that Aoyama Mainland's owner-investors depend on for occupancy and rent.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCjIUDGOqYvhocsVCI-CY8pg
• Facebookfacebook.com/mainland.official
• Instagraminstagram.com/aoyamamainland_official?igsh=MXZ2d3N4Nzc4ZTcwZg==

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Aoyama Mainland