We value "careful" work by our own construction, centered on the design and proposal capabilities of architects.

In addition to high airtightness and high heat insulation performance, it has excellent earthquake resistance and durability.

Business content

General construction industry

Architectural planning

Design ・Supervision・Construction 


Commercial Building Design

New Construction


Renovation ・Remodeling

Company Profile

Company NameKibino Sumai Co., Ltd.
Head office location4-5-143, Kawanishi, Iwakuni, Yamaguchi Prefecture, Japan
DUNS number703543942
Capital10 mil Yen
Number of employees6 Employee
Annual Revenues250 mil Yen

Business Scope

Complete type from design to completion

Pursuit of design by in-house design

Reduce costs with in-house construction

SAM Registered


236115 , 236116 , 236118 , 236210 , 236220

Management Philosophy 

We provide cost competitive end-to-end services from design to completion with in-house design and construction capabilities.

We can respond quickly, as we are located nearby the MCAS Iwakuni.


“Performance” and “Quality” that have value as assets In addition to high airtightness and high heat insulation performance, it has excellent for earthquake resistance and durability. We have a completion guarantee system and after-sales maintenance.


We are committed to utilize sustainable natural materials for ceilings, walls, floors, etc., thoroughly taking health and environmental issues into consideration.


If you have any inquiries about our job,
please contact us at the phone number or email below.

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    Personal information protection policy

    KIBINO SUMAI K.K.(hereinafter referred to as "the Company") keeps personal information of customers in accordance with the Act on the Protection of Personal Information. We are deeply aware of the importance of protecting your personal information, and in order to build a relationship of trust with our customers, we will disclose our personal information protection policy here.

    Collection of personal information
    We will properly acquire personal information without any deception or other fraudulent means.
    Use of personal information

    We collect and use personal information only within the scope of the following purposes.

    • Inquiries, confirmations, and opinions gathered from our company to improve services necessary for business execution
    • Responding to various inquiries

    The collection and use of personal information by our company is due to the voluntary provision of the customer, and if the customer provides the personal information, the customer permits us to use the personal information in accordance with this policy.

    Provision of personal information to a third party
    We will not disclose or provide personal information to a third party without the prior consent of the person unless there is a legitimate reason such as when required by law.
    Outsourced supervision
    We may provide a part of personal information to an external contractor in order to carry out business such as providing products and services to customers. In that case, we will manage the outsourced business so that it handles personal information appropriately.
    Disclosure / correction of personal information, etc.
    We will promptly disclose your personal information when requested by you. In addition, if there is an error in the content of personal information and there is a request for correction / addition/deletion from the person himself/herself, we will promptly respond to these requests.
    Use of cookies

    A cookie is information that is sent and stored from a web server to the browser of a site visitor. Cookies can only be read by the web server that sent the information. We may use cookies to improve the accessibility and convenience of our website and collect information such as the browsing status of our website. This data does not identify or track individual site visitors.

    Third-party companies may acquire and use cookie information by linking with services of third-party companies or installing tags on our website. The cookie information acquired in that case is stored not on our server but on the server of the third-party company, and is managed in accordance with the personal information protection policy of each third-party company.

    Changes in personal information protection policy
    We may change this privacy policy as necessary. If there is a change, we will notify and announce it to the user by the method prescribed by our company.

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    Contact us : KIBINO SUMAI K.K.
    Tel: 81-90-2860-1259

    Managing director: Ryuichi Shigemura

    URL:  (EN)

    URL:  (JA)