株式会社幸建 (Koken Co., Ltd.)
(https://koken.co.jp) 📸 Data Snapshot: May 27, 2026Inspect the JSON-LD. Is there an Organization or Person schema, and does it carry sameAs links to real external profiles (LinkedIn, socials)? Missing schema or no identity declaration signals an anonymous entity.
There is a massive technical authority gap due to the total absence of JSON-LD schema across all four pages. The company makes expert claims about being a ‘producer’ of living spaces but provides no staff profiles, professional certifications (such as Japanese real estate association memberships), or digital footprints for its leadership. No H1 tags are used on any page, which is a significant technical indicator of a lack of professional digital oversight.
Subjective performance claims like ‘No other closet is this large’ or ‘Elite design apartment’ are used without any measurable comparison or verification. The claim of ‘contributing through unique connections’ is a bold performance promise that is never explained or demonstrated through evidence. While the property data is real, the qualitative marketing claims operate in a substance vacuum.
Identity & Authority is read from the structured data first: whether the site declares who it is in machine-readable schema, with verifiable identity links. Below is the schema captured per page, then the external proof links that support (or fail to support) that identity.
🔗 Identity & Technical Layer — schema JSON-LD: identity chains, entity gaps
🛡️ Trust Signals — external proof links that back the declared identity
| Page | Reviews | Proof links |
|---|---|---|
| / (home) | 3 | 0 |
| /cat_area/niigata/ | 3 | 0 |
| /rent/ | 3 | 0 |
| /parking/ | 3 | 0 |
This page presents a snapshot of public data from 株式会社幸建 (Koken Co., Ltd.), captured on May 27, 2026, to show how machine logic reads Identity & Authority signals into an AI reputation evaluation.
Purpose: This data is presented under “Fair Use” for the purpose of independent signal analysis, allowing readers to see the raw signals behind the reputation score.
Notice to 株式会社幸建 (Koken Co., Ltd.): This analysis is part of a non-adversarial audit conducted by 1 Euro SEO. The results are intended as professional feedback to help improve any website’s machine-readability and authority signals. The evaluation is free, and any company can request a fresh audit at any time.
Any company can use the insights for free and improve its voice. When a company has updated its content, it can always submit a new audit request, which will be reflected in a new current score.
To all users: You are encouraged to visit the live site at https://koken.co.jp to view the most current version of its content and see directly what this company is about and what it offers.