What NST does

株式会社NST (NST Co., Ltd.) is a Tokyo-based real estate developer and property management firm specializing in income-generating investment condominiums (収益型マンション) for individual investors in the Greater Tokyo metropolitan area. Founded in April 2009 and led by Representative Director Ishihara Yoshio (石原 淑雄), the company develops, markets, and sells reinforced-concrete investment condominium buildings—primarily 1K and 1LDK units located within walking distance of major train stations in the Tokyo 23 wards and surrounding Kanagawa and Saitama prefectures. NST operates three branded product series—Isle (アイル), Timone (ティモーネ), and Lufre (ルフレ)—each with multiple sub-lines (Premium, Grande, Nord, Nord Due, Imaje, Vacche, etc.) targeting different price and finish tiers. The firm ranked #2 in Greater Tokyo investment condominium supply in 2024 with 594 units supplied, capturing 14% market share of the 4,241-unit market per Fudosan Keizai Kenkyusho data.

The company's technical capabilities center on real estate development, design oversight, and construction management rather than proprietary software; product features include 360-degree virtual interior tours via Ricoh360, earthquake-resistant latch overhead cabinets, and standard security and amenity packages. NST monetizes through three streams: (1) one-time sales of condominium units to individual investor buyers, (2) recurring property management fees via two systems—a master lease (定額借上) arrangement under which NST guarantees fixed monthly rent to owners regardless of vacancy, and a collection agency (集金代行) service handling rent collection, tenant sourcing, and arrears enforcement—and (3) insurance agency commissions on damage and credit-life insurance products tied to mortgage financing.

NST employs approximately 200 staff and runs a pure enterprise field sales go-to-market anchored at its Shinjuku Sumitomo Building headquarters, where a dedicated direct sales department operates across multiple floors alongside Lounge DOLCE (a client-event venue opened in 2023) and a 47th-floor seminar room used for quarterly sales kick-offs and recurring owner seminars (オーナー様向けセミナー). Distribution is exclusively direct with no third-party resellers, marketplaces, or app channels; customer acquisition relies on phone-based consulting, owner seminars, web contact forms, and referral from existing owners. The company holds a Tokyo Metropolitan real estate transaction license and MLIT rental housing management registration, and has stated a 10-year strategic ambition to establish 20 group companies targeting 100 billion yen in annual group revenue.

Name

NST

Legal name

株式会社NST

Website

https://k-nst.co.jp

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

101–250 employees

Short description

NST (株式会社NST) is a Tokyo-based real estate developer that builds, sells, and manages income-generating investment condominiums in the Greater Tokyo area. Operating through three branded series (Isle, Timone, Lufre), it supplies ~594 units annually and manages them via master-lease and collection-agent systems for hundreds of individual investor buyers.

Ownership category

akta.pro rank

Product category

Investment Condominium Real Estate

NAICS

Rental and Leasing Services (532), Lessors of Real Estate (5311)

SIC

Real Estate Agents & Managers (For Others) (6531)

akta.pro primary industry

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

akta.pro secondary industry

Condominium Association Management (BPAJAHAA)

Keywords

• Investment condominiums
• Property management services
• Rental management systems
• Condominium development
• Real estate consulting

Headquarters

HQ city

Shinjuku

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Investment Condominium Sales: NST develops, markets, and sells investment-use condominiums (収益型マンション) to individual investors. Revenue is generated from the sale of completed or pre-sale condominium units. Units are sold as individual apartments to investors who then lease them for rental income. This is the primary revenue stream.
2. Property Management Services: NST operates two property management systems: (1) a master lease (、定額借上) system where NST guarantees fixed monthly rent to owners and sublets to tenants, and (2) a rent collection代行 (collection agent) system where NST handles rent collection, tenant complaints, and arrears督促 on behalf of owners.
3. Damage and Life Insurance Agency: NST acts as an agency for damage insurance (、地震保険) and life insurance products related to mortgage credit life insurance (団体信用生命), earning commissions on policy placements.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

株式会社NST develops, markets, and sells investment-use reinforced concrete condominiums (収益型マンション) in the Tokyo 23 wards and Greater Tokyo area under three in-house brand series — Isle (アイル), Timone (ティモーネ), and Lufre (ルフレ) — targeting individual investors seeking rental income and asset formation. Following sale, NST provides ongoing property management through a master lease system that guarantees owners fixed monthly rent, as well as a collection agent system that handles tenant sourcing, rent collection, and complaint resolution on the owner's behalf.

Product overview

株式会社NST is a real estate investment and property management company specializing in income-generating condominiums for investors in the Tokyo metropolitan area. The company operates through three main brand series—アイル (Isle), ティモーネ (Timone), and ルフレ (Lufre/Reflet)—each offering various sub-lines such as Premium, Grande, Nord, Nord Due, and Prestige for different investment segments. NST's product portfolio is complemented by comprehensive rental management services including the 定額借上賃貸借（マスターリース）system (master lease for guaranteed rental income) and 集金代行管理システム (collection agency service). The company targets investors seeking stable rental income and asset appreciation through urban condominiums in Tokyo 23 wards and surrounding areas, with properties typically ranging from compact 1K to 1LDK units near major train stations.

Differentiator

Problem solved

Functional benefit

Brands

• アイル (Isle): 投資用マンションシリーズ
• ティモーネ (Timone)
• ルフレ (Lufre)

Products and services

• Isle (アイル) Premium Series Investment Condominiums NST's flagship brand series of investment condominiums in central Tokyo's 23 wards targeting single-person households. Includes sub-lines such as Premium, Grande, Nord, Nord Due, Imbule Est, Vacche, Imbule, Image, Lache, Claire, and Canale. Each property is a reinforced concrete multi-story condominium near major train stations, sold to individual investors for rental income generation.
• Timone (ティモーネ) Premium Series Investment Condominiums Premium condominium brand series by NST targeting investors seeking higher-end investment properties. Includes sub-lines such as Timone Grande (large-scale), Nord, Nord Due, Premium, Est, and Air Port (airport proximity). Station-adjacent locations in central Tokyo and Greater Tokyo.
• Lufre/Reflet (ルフレ) Luxury Series Investment Condominiums Luxury condominium brand series by NST for high-end investment property buyers. Includes sub-lines such as Lufre Grande (large-scale), Grand Due, Premium, Nord, Linda, and Imbule. Targets investors seeking upscale properties with premium finishes.
• Master Lease Rental Management System (定額借上賃貸借 / マスターリース) Service where NST enters a lease agreement with the property owner and sublets the unit to tenants, guaranteeing the owner a fixed monthly rent regardless of vacancy. De-risks condominium ownership by ensuring stable rental income for investors.
• Collection Agency Management System (集金代行管理システム) Service where NST handles rent collection, tenant management, arrears enforcement, and complaint handling on behalf of property owners, while the owner retains direct tenant relationships. Allows investors to outsource tenant relations and payment processing.
• Comprehensive Rental Management Service (賃貸管理システム) Full-service rental management for property owners, including tenant recruitment, property maintenance, administrative tasks, and rent management. Allows investors to outsource all operational responsibilities of property ownership to NST.
• Income-Generating Real Estate Investment Consulting (収益不動産（マンション経営）咨询服务) Real estate investment consulting services for condominium property management covering life insurance alternatives, private pension planning, inheritance/gift tax strategies, and tangible real estate investment benefits. Targets individual investors seeking comprehensive advice on income-generating property investment.
• Damage and Life Insurance Agency Services NST acts as an insurance agency offering damage insurance (地震保険) and life insurance products related to mortgage credit life insurance (団体信用生命), earning commissions on policy placements for property owners and mortgage holders.

Quantifiable outcome

• Market share: 14% of Greater Tokyo investment condominium market (2024)
• +3 more outcomes

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered minor.

• 石川県 (Ishikawa Prefecture)minorOthers · 1 January 2024Following the 2024 Noto Peninsula earthquake, NST donated 10,000,000 yen to Ishikawa Prefecture for disaster relief.
• 認定特定非営利活動法人 環境リレーションズ研究所minorOthersNST supports the Present Tree forest regeneration project through this NPO, contributing to environmental CSR activities.

Scale indicators7 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• Invariance Inc. Invariance develops and sells investment condominium properties in central Tokyo to individual investors using a seminar-driven and direct-sales motion, closely overlapping NST's customer segments, product type, and go-to-market approach.
• Property Agent Inc. Property Agent designs, develops, and sells investment-use condominiums in central Tokyo for individual investors, with a sales motion and product positioning that closely mirror NST's Isle/Timone/Lufre series.
• Anabuki Kosan Inc. Anabuki Kosan develops, sells, and manages investment and rental properties (including condominiums) and offers owner-support services across Japan — a comparable integrated investment-condo developer and landlord-manager with substantial overlap with NST.
• FJ Next Co., Ltd. FJ Next is a Tokyo-based specialist in investment-use condominium development and sale to individual investors — directly comparable to NST's core business of building, marketing, and selling income-producing condos under proprietary brand names.

Broad incumbents

• Tokyo Tatemono Co., Ltd. Tokyo Tatemono is a large diversified Tokyo-focused real estate developer with investment and residential condominium operations directly comparable to NST's core focus area, though at materially larger scale and broader portfolio.
• Nomura Real Estate Holdings: Nomura Real Estate is a major Japanese real estate developer and asset manager — overlapping with NST in condominium development, investment property sales, and property management, but operating at significantly larger scale and broader scope.
• Daiwa House Industry Co., Ltd. Daiwa House is Japan's largest homebuilder and a major diversified real estate developer with investment property and condominium offerings that intersect NST's investor-condo niche as part of a much broader portfolio.
• Tokyu Land Corporation: Tokyu Land is a major Japanese real estate developer active in residential condominium development, investment property management, and related services — overlapping NST's product portfolio across multiple customer segments.
• Mitsubishi Estate Co., Ltd. Mitsubishi Estate is one of Japan's largest real estate developers with extensive residential and investment property operations centered in Tokyo — comparable to NST in product type, though vastly larger in scale, land-bank, and capital base.

Emerging players

• GA technologies: GA technologies operates a real-estate-tech platform that includes investment condominium matchmaking (Renosy) and developer services, intersecting with NST's investor-facing sales motion via a digital, proptech-enabled channel.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 NST