株式会社エンジン

What 株式会社エンジン does

株式会社エンジン (Enjin Corporation) is a private Japanese interior finishing construction company headquartered in Toshima-ku, Tokyo, focused on the Tokyo metropolitan area. Founded on February 1, 2005, the company operates with 13 employees and 10 million JPY in registered capital under the representative director 諏訪裕一 (Yuichi Suwa). Its core construction offerings include LGS (light-gauge steel) framing for ceilings and walls, board installation (gypsum board, decorative calcium silicate board, rock wool acoustic panels), system ceilings, spandrel panels, OA flooring, and tile carpet installation. The company also offers eco-refurbishment and thermal insulation retrofits eligible for the Japanese government's Housing Eco-Point subsidy program (up to 300,000 JPY per project).

Beyond direct construction, the company operates two online community platforms—Enjin Net (エンジンネット) for interior finishing contractors and Ball no Kai (ボールの会) for specialized technicians and craftsmen—plus an ancillary contractor support line covering industry-aware website creation, custom metal hardware fabrication using no-weld methods (無溶接金物工法), charter delivery and material collection, and labor support for protective covering, demolition, hoisting, and scaffolding. Since 2007 it has hosted the secretariat of the Interior Construction Research Society (内装工事研究会), a cross-trade alliance of allied interior construction specialists. Customers include general residential consumers, specialized interior contractors, and institutional clients such as Rikkyo University, Koshu City Hall, Tokyo Metropolitan Housing, and LABI Kamakura.

The business model is primarily project-based, one-time construction revenue, supplemented by ancillary professional services and recurring community-platform participation. The company combines traditional construction trade expertise with IT/web development capabilities—a relatively unusual positioning that supports both contractor support services and the operation of online community platforms. Geographic scope is limited to the Tokyo metropolitan area (Tokyo, Kanagawa, Saitama, Yamanashi prefectures); no overseas operations are present.

Name

株式会社エンジン

Legal name

enjin corporation Co.,Ltd.

Website

https://enjinnet.web.fc2.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

11–50 employees

Short description

株式会社エンジン (Enjin Corporation) is a Tokyo-based interior finishing construction company serving residential, commercial, institutional, and government clients in the Tokyo metropolitan area with LGS, board, ceiling, OA flooring, and eco-refurbishment services, alongside contractor community platforms and a cross-trade alliance.

Ownership category

akta.pro rank

Product category

Interior Finishing Construction Services

NAICS

Drywall and Insulation Contractors (23831), Building Finishing Contractors (2383), Flooring Contractors (238330)

SIC

Sheet Metal Work (3444)

akta.pro primary industry

Drywall, Partitions & Suspended Ceilings (IMAFANAG)

akta.pro secondary industries

Basement Framing, Insulation & Drywall (Build-Out) (HSAPACAB), Painting, Decorating & Wallcoverings (IMAFANAI), Facade & Cladding Systems (Rainscreens, Panels, EIFS, Siding) (IMAFAMAB)

Keywords

• Interior finishing construction
• Light gauge steel framing
• Drywall installation services
• System ceiling installation
• Contractor support services

Headquarters

HQ city

Tokyo (Toshima Ward / 東池袋)

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Interior Finishing Construction: Core revenue stream from installation of LGS ceilings and walls, drywall, acoustic panels, system ceilings, spandrel panels, OA flooring, and tile carpet. Project-based, one-time service revenue.
2. Eco-refurbishment and Insulation Construction: Eco-friendly renovation services including thermal insulation retrofits for walls, ceilings, and floors. Includes participation in Japan's Housing Eco Point subsidy program (住宅エコポイント) for eligible projects.
3. Specialized Services for Contractors: Ancillary services including website development for construction companies, custom metal hardware fabrication, chartered delivery and material collection, protective covering/demolition/hoisting/scaffolding support, and qualification/skill training information. Target market is specialized interior finishing contractors.
4. Material Sales: Sales of construction materials including NF hardware, screws, protective materials, and tools to specialized contractors.
5. Professional Community Platform Services: Operation of specialized online communities (Enjin Net for contractors and Ball no Kai for craftsmen) providing member benefits and industry networking services.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

株式会社エンジン provides interior finishing construction services in the Tokyo metropolitan area, including light gauge steel (LGS) framing for ceilings and walls, board installation (gypsum, decorative calcium silicate, rock wool acoustic panels), system ceilings, spandrel panels, OA flooring, and tile carpet installation. The company also offers eco-reform insulation services with Housing Eco-Point subsidy application support, plus ancillary contractor support services such as custom metal hardware fabrication, charter delivery and material pickup, protective covering/demolition/hoisting/scaffolding labor, and website creation tailored for construction firms.

Product overview

株式会社エンジン is a single-service construction company offering a unified portfolio of interior construction services under the enjin brand. The core offering consists of LGS (light gauge steel) framework, board work (gypsum board, decorative calcium silicate, rock wool panels), system ceilings, spandrel, OA floors, and tile carpet installation. Supporting services include eco-reform with insulation work and housing eco-point application assistance. The company also operates two community platforms—ｅｎｊｉｎネット for construction industry professionals and ボールの会 for specialized craftsmen—as well as a specialized contractor support service covering homepage creation, logistics, and materials handling. The company serves as the secretariat for the 内装工事研究会 (Infill Constructors Society), an industry alliance formed in 2007.

Differentiator

Problem solved

Functional benefit

Brands

• ｅｎｊｉｎ: 株式会社エンジンが提供する技術・サービスの総称。首都圏を中心に内装工事を提供。
• ｅｎｊｉｎネット
• ボールの会
• 内装工事研究会（Infill Constructors Society）

Products and services

• LGS Construction (軽量鉄骨工事 / Light Gauge Steel Framing) Light gauge steel framing services for ceilings and walls forming the structural framework for interior spaces, delivered to commercial, residential, institutional, and government projects in the Tokyo metropolitan area.
• Board Work (ボード工事) Installation of gypsum boards, decorative calcium silicate boards, and rock wool acoustic panels for wall and ceiling finishing in interior projects.
• System Ceiling Installation (システム天井) System ceiling installation using rock wool acoustic panels, wire mesh, and metal panels for commercial and office buildings.
• Spandrel Construction (スパンドレル工事) Spandrel construction using steel plates, aluminum, and galvalume materials for architectural exterior and interior applications.
• OA Floor Installation (OAフロア) Office automation floor systems for cable management and flexible workspace configuration in commercial buildings.
• Tile Carpet Installation (タイルカーペット施工) Tile carpet installation services for commercial and office interiors.
• Eco-Reform and Housing Eco-Point Application Support (エコリフォーム・エコポイント申請支援) Eco-friendly renovation services including thermal insulation retrofits for walls, ceilings, and floors, combined with application support for Japan's Housing Eco-Point subsidy program providing up to 300,000 JPY in government points per qualifying project.
• Specialized Contractor Support Services (専門業者様向けサポート) Bundled support services for specialized interior finishing contractors, including construction-industry-specific website creation, custom metal hardware fabrication using a no-weld method, chartered vehicle material delivery and pickup, protective covering/demolition/hoisting/scaffolding labor, and qualification/skill training information.

Quantifiable outcome

• Eco-refurbishment insulation projects produce 130,000 housing eco-points with a minimum project cost of 100,000 JPY, yielding a 30,000 JPY net government subsidy benefit.

Named customers6 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

Feature1 record

Partnerships

Six partnerships are on record, tiered minor and core.

• 株式会社イノアック住環境 (Inoac Corporation - Living Environment Division)minorOthersBuilding material manufacturer. Listed as a link partner on the company website under 'Building material manufacturers and traders'. Provides OA floor materials.
• 株式会社桐井製作所 (Kirii Manufacturing Co., Ltd.)minorOthersBuilding material manufacturer. Listed as a link partner on the company website under 'Building material manufacturers and traders'. Provides steel framing, system ceilings, and raised floor systems.
• 大建工業株式会社 (Daiken Corporation)minorOthersBuilding material manufacturer. Listed as a link partner on the company website under 'Building material manufacturers and traders'. Provides rock wool acoustic panels and system ceilings.
• 野原産業株式会社 (Nohara Inc.)minorOthersComprehensive building material trading company. Listed as a link partner on the company website under 'Building material manufacturers and traders'. Acts as a general building material distributor.
• 吉野石膏株式会社 (Yoshino Gypsum, Inc.)minorOthersBuilding material manufacturer. Listed as a link partner on the company website under 'Building material manufacturers and traders'. Provides gypsum board products.
• 内装工事研究会 (Infill Constructors Society / Interior Construction Research Society)coreStrategic or Co-development PartnerCross-trade alliance organization founded in 2007, with its secretariat based at Enjin Corporation's office. Enables member companies to undertake projects outside their individual specialties through inter-company ordering, expanding project scale, sales, and profits for all members. Includes allied trades: LGS/board, partitions, cross/finish sheets, dry dual-floor/OA floor, floor finish, curtains/blinds, painting, electrical/equipment, and hoisting. The secretariat office is located at the same address as Enjin Corporation.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Others

• Paramount Bed Holdings Co., Ltd. (パラマウントベッドホールディングス株式会社): While primarily a medical and care bed manufacturer, the company has interior finishing adjacencies in Japanese construction. Included as a broader construction-adjacent peer for the Japanese building products market.
• Nohara Inc. (野原産業株式会社): Comprehensive building materials trading company in Japan. Acts as a general building material distributor and serves as a direct link partner/supplier to Enjin's interior finishing operations.
• Fukuvi Chemical Industry Co., Ltd. (フクビ化学工業株式会社): Japanese manufacturer of building materials for interior finishing and renovation, including boards, sidings, and waterproofing products. Operates in the same interior finishing supply chain as Enjin.
• Inoac Corporation, Living Environment Division (株式会社イノアック住環境): Manufacturer of OA floor systems and interior building materials. Supplies OA flooring products to Enjin and competes in the same commercial interior finishing supply chain.

Broad incumbents

• Misawa Homes Co., Ltd. (ミサワホーム株式会社): Major Japanese housing and construction company that performs interior finishing in-house. Represents a large incumbent that competes with Enjin for residential interior finishing work.
• Yoshino Gypsum Co., Ltd. (吉野石膏株式会社): Japan's leading manufacturer of gypsum board products used in drywall and partition systems. Enjin sources from Yoshino for board work, positioning it as the dominant upstream incumbent in Enjin's primary installation category.
• Nice Corporation (ナイス株式会社): Japanese building materials distributor and construction company. Combines material supply with construction services, including housing construction, representing a vertically integrated competitor in the same value chain.
• Daiken Corporation (大建工業株式会社): Major Japanese manufacturer of rock wool acoustic panels, system ceilings, and interior building materials. Daiken's product portfolio directly overlaps with Enjin's board work and system ceiling installation services.
• Asahi Kasei Construction Materials (旭化成建材株式会社): Major Japanese manufacturer of building materials including foundation systems, insulation, and interior products. Represents a much larger incumbent capable of vertical integration into interior finishing services.

Direct peers

• Kirii Manufacturing Co., Ltd. (株式会社桐井製作所): Japanese manufacturer of steel framing, system ceilings, and raised floor systems. Listed as a direct material supplier to Enjin and overlaps with its core LGS and system ceiling installation scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE%E3%82%A8%E3%83%B3%E3%82%B8%E3%83%B3

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 株式会社エンジン