What Asahi Giken does

旭技建株式会社 (Asahi Giken Inc.) is a private Japanese construction services firm specializing in large-scale renovation (大規模修繕), waterproofing, exterior/civil engineering, and painting work for condominium and apartment buildings. Founded in 1982 as the successor to Asahi Kagaku Kogyo (originally established 1957), the company is headquartered in Settsu City, Osaka Prefecture, with a main branch in central Osaka (relocating June 2026) and a sales office in Amagasaki, Hyogo. Its operations serve the Kansai region — Osaka, Hyogo, Kyoto, Nara, Wakayama, and Shiga — focusing on condominium management associations (管理組合) and building owners seeking long-term maintenance and asset-preservation services.

The company's technical core centers on concrete structure restoration and waterproofing, with multiple methods offered: asphalt waterproofing, sheet waterproofing, urethane coating waterproofing (suited to complex shapes and balconies), and FRP waterproofing (for high-traffic parking rooftops). Specialized services include roof greening construction with automated irrigation, single-roof covering systems, and underground pit/exterior wall waterproofing using concrete densification. The firm pioneered Japan's first specialized apartment renovation department in 1978, completed Kansai's first ultra-high-rise condominium renovation (Bell Park City) in 1998, and holds ISO9001 certification (since 2003) for waterproofing, painting, and renovation quality management. Cumulative achievement exceeds 170,000 units.

Asahi Giken operates a direct sales-led model with route/door-to-door engagement of management associations and property owners, supplemented by a partner/subcontractor network (協力業者) covering 15+ construction trades (general construction, scaffolding, painting, waterproofing, tile, metal, plumbing, electrical, fixtures, cleaning, equipment rental). Revenue is generated through project-based, one-time contracts — large-scale renovation of building exteriors, structural components, roofing, and waterproofing — with individually quoted estimates following on-site inspections. The firm also performs value-added work (entrance renovations, barrier-free modifications, automatic doors, security upgrades). Registered capital of ¥150 million (as of 2013) and consistent reinvestment in office infrastructure and partner network expansion indicate a stable, regionally anchored mid-market contractor with no external fundraising activity and no disclosed financial figures.

Name

Asahi Giken

Legal name

旭技建株式会社

Website

https://asahi-giken.co.jp

Company type

Private

Founded year

1982

Operating status

Operating

Short description

旭技建株式会社 (Asahi Giken) is a private Osaka-based construction firm specializing in large-scale condominium renovation, waterproofing, exterior/civil engineering, and painting for management associations and building owners across the Kansai region of Japan.

Ownership category

akta.pro rank

Product category

Building Renovation and Waterproofing Construction Services

NAICS

Residential Remodelers (236118)

SIC

Construction - Special Trade Contractors (1700)

akta.pro primary industry

Association Maintenance, Vendor & Capital Project Management (BPAJAHAM)

akta.pro secondary industry

HOA / Condominium Association Management (BPAJAFAH)

Keywords

• Building renovation services
• Waterproofing construction
• Condominium maintenance
• Concrete repair services
• Exterior painting work

Headquarters

HQ city

Osaka

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Large-scale Renovation Construction (大規模修繕工事): Core revenue stream from comprehensive renovation and repair of condominiums including exterior walls, steel components, roofing, and waterproofing. Project-based one-time payments from building management associations and property owners.
2. Waterproofing Construction (防水工事): Specialized waterproofing services including asphalt, sheet, urethane coating, and FRP methods. Delivered as individual projects or as part of larger renovation contracts.
3. Exterior/Civil Engineering (外構・土木工事): Parking lot improvements, fencing, landscaping, drainage, and accessibility modifications. Project-based services integrated with renovation work.
4. Other Construction Services (その他工事): Value-added improvements including entrance renovations, barrier-free modifications, automatic door installations, security systems, and interior renovations. Smaller maintenance and repair services also included.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Asahi Giken provides large-scale condominium renovation construction, waterproofing works, exterior and civil engineering, and ancillary building improvement services for building management associations and property owners in the Kansai region of Japan. The company delivers integrated construction solutions spanning long-term repair planning, structural concrete repair, multi-method waterproofing (asphalt, sheet, urethane, FRP), painting, exterior works, barrier-free modifications, security upgrades, and entrance renovations. Its services are sold as project-based contracts delivered directly on customer buildings, with over 170,000 units of accumulated construction achievement.

Product overview

Asahi Giken provides integrated construction services for large-scale apartment building maintenance and renovation. The company operates four core service areas: large-scale repair construction (大規模修繕工事) for comprehensive building restoration, waterproofing construction (防水工事) for moisture protection, exterior and civil engineering (外構・土木工事) for structural modifications, and painting construction (塗装工事) for surface finishing. These services are offered as an integrated solution for property management companies and residential building owners seeking single-vendor renovation partnerships.

Differentiator

Problem solved

Functional benefit

Products and services

• Large-Scale Renovation Construction (大規模修繕工事) Comprehensive large-scale repair and renovation services for condominium and apartment buildings, including structural repairs, exterior walls, steel components, roofing, waterproofing, painting, and full restoration works. Delivered as integrated projects to building management associations and building owners, with over 170,000 units of accumulated construction experience and an industry-first specialized apartment renovation department established in 1978.
• Waterproofing Construction (防水工事) Specialized waterproofing construction services covering rooftops, balconies, corridors, stairs, parking rooftops, underground pits and exterior walls, delivered via four method families: asphalt waterproofing, sheet waterproofing, urethane coating waterproofing, and FRP waterproofing. Includes specialized leak investigation and repair performed by qualified waterproofing technicians, with ISO9001-certified quality management.
• Exterior and Civil Engineering (外構・土木工事) Exterior construction and civil engineering work for residential properties, including parking lot improvements, fencing, landscaping, drainage, accessibility modifications, and infrastructure improvements. Integrated as part of overall renovation projects to enhance functionality, crime prevention, and surrounding landscape aesthetics.
• Other Construction Services (その他工事) Value-added improvement works including entrance renovations, barrier-free modifications, automatic door installations, security system installations, and interior renovations, along with smaller-scale maintenance and repair services. Delivered as supplementary or standalone improvements to enhance resident comfort and building usability.
• Painting Construction (塗装工事) Professional painting services for building exteriors, interior walls, steel components, soffits and structural members, including surface preparation, primer application and protective coating systems. Delivered as a standalone trade or as part of integrated large-scale renovation and waterproofing projects, covered by the company's ISO9001-certified quality management system.

Quantifiable outcome

• 170,000+ units of construction achievement
• +2 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Five partnerships are on record, tiered moderate and minor.

• マンション計画修繕施工協会 (Association of Apartment Building Renovation Construction)moderateOthersMember of industry association for apartment building renovation planning and construction. Association provides industry standards, best practices, and professional development for member companies.
• 東西アスファルト事業協同組合 (East-West Asphalt Business Cooperative)moderateOthersCooperative organization for asphalt business operations. Membership provides access to industry resources and collective initiatives.
• 関西防水管理事業協同組合 (Kansai Waterproofing Management Business Cooperative)moderateOthersRegional cooperative for waterproofing management businesses in the Kansai area. Supports industry standards and professional practices.
• 全国防水工事業組合 (National Waterproofing Business Association)moderateOthersNational association for waterproofing construction businesses providing industry advocacy and professional development.
• 関西塗膜防水工事業協会 (Kansai Coating Waterproofing Construction Association)minorOthersRegional association promoting coating waterproofing construction methods in Kansai. Supports technical standards and professional training.

Scale indicators6 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Sanshin Jūkyo (三信住建): Mid-sized Japanese construction firm specializing in condominium large-scale repair and waterproofing. Similar to Asahi Giken in specialty focus, mid-market positioning, and association-driven customer model, though with Kanto-centric operations.
• Daiwa House Reform (大和ハウスリフォーム): Renovation subsidiary of Daiwa House Industry, offering large-scale condominium repair work alongside detached home remodeling. Comparable in target customer (condo associations) and renovation services, but with the backing of a major general contractor's brand and balance sheet.
• Toko Construction Works (東工建設): Japanese specialty contractor focused on large-scale condominium repair/renovation and waterproofing. Directly comparable to Asahi Giken in business model, customer base (condo management associations), and project types, though operating across broader Japan including Tokyo/Kanto.
• Nice Corporation (ナイス株式会社): Japanese construction company with a substantial repair/renovation business for condominiums and detached housing. Comparable to Asahi Giken in renovation scope and association customer focus, with broader geographic reach and housing materials supply chain integration.
• Mitsui Home Remodeling (三井ホームリモデリング): Renovation arm of Mitsui Home providing large-scale condominium repair work and waterproofing services. Comparable to Asahi Giken in core service scope and customer type but with broader parent-group resources and greater geographic coverage.
• Haseko Reform (長谷工リフォーム): Renovation arm of Haseko Corporation, one of Japan's largest condominium builders. Comparable to Asahi Giken in large-scale condominium renovation focus but with significantly greater scale, brand recognition, and access to Haseko-developed condominium stock.

Broad incumbents

• Hazama Ando Corporation (安藤ハザマ): Major Japanese general contractor offering building renewal and renovation services alongside new construction. Comparable in renovation capability but operates as a broad incumbent across infrastructure and commercial construction, with renovation as one of many segments.
• Taisei Yū Kensetsu Reform (大成ユーレック / 大成建設ハウジング): Renovation arm of Taisei Corporation, one of Japan's 'super zenecons.' Comparable in large-scale condominium renovation work, but with the full financial and technical resources of a major general contractor and a much broader portfolio.

Emerging players

• Anabuki Kosan (穴吹興産): Japanese real estate developer with integrated property management and renovation operations, particularly active in regional markets including Shikoku and Kansai. Comparable overlap in condo management and renovation services, with stronger developer-side position but smaller renovation specialty depth than Asahi Giken.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Asahi Giken