Seiwa

What Seiwa does

Seiwa Corporation (生和コーポレーション) is a privately held Japanese real estate developer and land-utilization specialist founded in 1971 and headquartered in Osaka, with 58 branches across Japan's four major metropolitan areas (Tokyo, Osaka, Nagoya, Fukuoka). The company advises landowners and SME owners on converting idle or aging real estate into income-producing rental properties, then delivers integrated planning, design, construction, and long-term management through its wholly-owned Seiwa Group of 14+ subsidiaries. Primary customers are individual landowners seeking inheritance-tax mitigation and stable retirement income, and SME operators seeking business succession via factory, warehouse, or bathhouse-to-rental conversions.

The company's core technical offering is the proprietary "100年賃貸" (100-Year Rental) reinforced-concrete building system, co-developed with University of Tokyo professor Takafumi Noguchi. It specifies approximately 2.1x the building-code concrete cover, low water-cement ratio, seismic-isolation structure, and high-weatherability exterior materials, claimed to deliver about twice the lifespan of standard RC rental buildings, a 37% lifecycle cost reduction, and a 36% reduction in CO2 emissions during renovation. Product breadth spans RC, two-by-four wood-frame, and steel-frame apartment buildings, hotels, senior and welfare facilities, and commercial/office buildings. ZEH/ZEB Net Zero Energy construction and concept rentals (music-themed buildings, pet-friendly units) extend the product surface.

Seiwa generates revenue from one-time construction/development fees on each project, recurring property-management fees across approximately 100,000+ managed units handled by group subsidiary Seiwa Amenity, ongoing spread economics under the FG35 (Full Guard 35) 35-year guaranteed sublease system, and ancillary real estate sales, parking, and coin-parking management services. Go-to-market is direct field sales through ~70 newly hired asset planners per year who consult landowners on-site across all four major metropolitan areas. Brand prestige is reinforced by ~20 design awards, including multiple Good Design Awards (2013–2025), the German Design Award 2026 (Winner), DFA Design for Asia Awards 2025 (Merit), and A' Design Award 2025 (Silver).

Name

Seiwa

Legal name

Seiwa Corporation Co., Ltd.

Website

https://seiwa-stss.jp

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

1,001–5,000 employees

Ownership category

akta.pro rank

Product category

Real Estate Development and Property Management

NAICS

Residential Property Managers (531311), Rental and Leasing Services (532)

SIC

Operators Of Apartment Buildings (6513)

akta.pro primary industry

Multifamily Apartment Property Management (BPAJAFAA)

akta.pro secondary industry

Multifamily (Apartment) Property Management (BPAJAGAD)

Keywords

• Land utilization consulting
• Rental property construction
• Property management services
• Guaranteed sublease rental
• Rental mansion development

Headquarters

HQ city

Osaka

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Supply Chain, Personnel, Operations, Marketing or Sales

Revenue model

1. Building Construction / Development Fees: Revenue from designing and constructing rental apartment buildings, condominiums, commercial buildings, hotels, and welfare facilities on customer-owned land. The company serves as the developer and general contractor, handling planning through completion. Fees are earned on a per-project basis, typically on a lump-sum construction contract basis.
2. Property Management Services: Ongoing property management fees from approximately 100,000+ rental units under management across Japan. Includes tenant recruitment, rent collection, maintenance coordination, and administrative services. Revenue from the group's property management subsidiary (生和アメニティ).
3. FG35 Guaranteed Sublease Revenue: Under the FG35 sublease system, the company subleases properties from owners and then sub-subleases to tenants, earning the spread between guaranteed rent paid to owner and actual rental income collected. Includes repair risk coverage as an added service component.
4. Real Estate Sales and Disposition Services: Supporting property owners in selling or liquidating real estate assets as part of land utilization strategy, including corporate real estate (CRE) strategy consulting and actual disposition services.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

Seiwa Corporation provides end-to-end land utilization services for landowners, combining rental property construction (reinforced concrete, wood, and steel mansions) with guaranteed long-term sublease and ongoing property management. Its signature "100-year rental system" enables landowners to convert underutilized land into income-generating rental housing, hotels, welfare facilities, and commercial buildings through a single integrated provider.

Product overview

Seiwa Corporation (生和コーポレーション) is a real estate development and land utilization company established in 1971, offering integrated services from planning and design to construction and rental property management. The core product is the '100年賃貸' (100-Year Rental) concept — a long-lasting reinforced concrete rental housing system that achieves approximately twice the lifespan of conventional buildings through enhanced concrete specifications and low water-cement ratios. The product portfolio spans multiple construction types: reinforced concrete (RC) apartment buildings (positioned as NO.1 in Tokyo/Osaka by floor area), wooden two-by-four apartments, and steel-frame constructions. Building solutions include hotels, senior/welfare facilities, and commercial/office buildings. Supporting services include STSS (Total Service System), FG35 sublease guarantee system, SEIWA24 management services, and specialized options like pet-friendly units, enhanced security, and seismic isolation technology. The company operates across Japan's four major metropolitan areas with ISO 9001 and ISO 14001 certifications.

Differentiator

Problem solved

Functional benefit

Brands

• GOOD DESIGN AWARD: Award-winning design recognition program under which multiple Seiwa properties have received recognition, including properties such as F-TOUR, Catch the Wind Multi Unit Housing, ルーツ渋谷本町, ARTIO DOMANI, RAXA, and others.
• German Design Award
• DFA Design for Asia Awards
• A' Design Award
• ICONIC AWARDS: Innovative Architecture
• 100年賃貸
• STSS (Seiwa Total Service System)
• FG35 (Full Guard 35)
• SEIWA24
• ALTIA

Products and services

• 100-Year Rental System Integrated land utilization program for landowners, combining feasibility consulting, rental property construction, and guaranteed long-term sublease property management to generate stable rental income from underutilized land.
• RC (Reinforced Concrete) Mansions

Named customers9 records

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

Three partnerships are on record, tiered core.

• Housing Finance Agency (住宅金融支援機構)coreStrategic or Co-development Partner · 1 January 2011Collaborated on financing solutions for the ESPOIR ROKAKOUEN project, enabling the client to obtain low-interest loans from the Housing Finance Agency. The completed project was subsequently awarded the Housing Finance Agency 2011 Director's Award for quality rental housing supply.
• Seiwa Group Companies (生和グループ)coreOthersSeiwa Fudosan (real estate), Seiwa Amenity (building management), Seiwa Insurance, Seiwa Homes, Seiwa Urban Development, Seiwa Building Management, SK Finance, Seiwa Design Research Holdings, Chintai Fudosan News, Happy Life, Seiwa Com, SIF — collectively provide end-to-end land utilization services.
• Professor Takafumi Noguchi, University of Tokyo / Vice President of AIJcoreStrategic or Co-development PartnerTechnical advisor contributing to the development of the 100-year rental building system. Co-developed sustainable building technology achieving 37% lifecycle cost reduction and 36% CO2 emission reduction during renovation.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Leopalace21 Corporation: One of Japan's largest dedicated rental apartment developers and property managers, with national construction and management operations. Most directly comparable to Seiwa on integrated build-to-rent and managed-services model across Japanese metros.
• Anabuki Kosan Inc. Japanese rental property developer and manager focused on land utilization for landowners, particularly in regional metros. Closely comparable niche positioning to Seiwa's rental apartment construction plus management offering.

Broad incumbents

• Daiwa House Industry Co., Ltd. Japan's largest homebuilder and a major commercial/real estate developer with a broad portfolio spanning residential, commercial, and logistics. Comparable on construction scale and integrated real estate services, but operates far beyond Seiwa's rental apartment niche.
• Sekisui House, Ltd. Major Japanese homebuilder with significant rental and built-to-rent exposure. Comparable on construction methodology and managed real estate, though operates at much larger scale across multiple property types.
• Tokyu Land Corporation: Diversified Japanese real estate developer with rental residential, office, retail, and resort assets. Comparable on integrated development and management, with stronger commercial focus and broader portfolio than Seiwa.
• Nomura Real Estate Holdings, Inc. Japanese real estate developer and asset manager with significant residential leasing and property management operations. Comparable on recurring property management revenue, though portfolio mix is more diversified across commercial and asset management.
• Haseko Corporation: Major Japanese general contractor with significant condominium and rental housing construction. Comparable on construction methodology and metropolitan focus, though broader than Seiwa across property types.
• Sumitomo Realty & Development Co., Ltd. Diversified Japanese real estate developer with rental housing, office, and commercial operations. Comparable on integrated build-and-hold real estate services across Japan's major metros.

Emerging players

• Open House Group Co., Ltd. Japanese real estate company with growing single-family rental and condo operations. Comparable on Japanese metropolitan residential focus; while Seiwa specializes in multifamily rental, Open House overlaps on landowner-facing GTM in similar metros.

Others

• Advance Residence Investment Corporation: Japan's largest residential REIT, owning and managing rental apartments in major metros. Comparable as a bulk institutional buyer/manager of Japanese multifamily rental assets and a reference point for FG35-style long-term cash flow profiles.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/seiwaeast
• YouTubeyoutube.com/channel/UC-QPg7-_BXVt5YF1ZO9s6wA
• Facebookfacebook.com/seiwa.corporation.recruit
• Instagraminstagram.com/seiwagroup_recruit

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries13 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 Seiwa