cstb.fr — September 2026 traffic, keywords & AI visibility

cstb.fr draws an estimated 188 visits a month from search engines. Effectively all of it is organic — about 188 visits from unpaid results. Spread across 58 ranking keywords, that averages roughly 3.2 organic visits per keyword.

On our AI visibility scale cstb.fr earns 59 of 100 points, a grade D. It takes full marks for LLMS.txt. The biggest gap is SEO health, at 0 of 20 points (0/100), worth 20 points if closed. It also loses points on Crawlability (0/10), Company profile (19/25) and Structured data (0/5).

The llms.txt on cstb.fr runs to 73 lines (4,650 characters) across 12 sections, last generated in May 2026. It introduces the site as "CSTB". It tells AI engines the business works in Construction, Building Certification and Sustainable Building. It describes 4 products, including CSTB Certification, Technical Assessment Reports and Energy Performance Testing. Services it lists include Standards Development, Research Partnerships and Training Programs. It targets France. Technologies it mentions include Laboratory testing equipment and Building simulation software. The keywords it claims start with "CSTB", "CSTB certification", "green building certifications" and "sustainable building practices".

# CSTB

## About
CSTB operates as France's premier scientific and technical center dedicated to the building sector. It conducts extensive research on construction materials, energy performance, and safety standards while delivering official certifications that help projects meet national regulations. The organization works closely with architects, contractors, and manufacturers to improve building quality across residential, commercial, and public infrastructure. Its expertise spans thermal efficiency, acoustic comfort, fire resistance, and environmental impact assessments. CSTB also develops innovative testing methods and digital tools that support modern construction practices. Clients range from large engineering firms to smaller material suppliers seeking compliance and performance validation. The center maintains strong ties with government bodies to shape evolving building codes and sustainability targets. Through its laboratories and field studies, CSTB evaluates real-world performance of new technologies and construction systems. Its certification marks are widely recognized across Europe as benchmarks for quality and regulatory adherence. The organization publishes technical guides and research findings that influence industry best practices. CSTB supports training programs that help professionals stay current with changing standards. Its work directly contributes to 

Google lists cstb.fr for about 58 keywords, which together bring an estimated 188 organic visits a month.

The latest technical audit of cstb.fr scored 0 out of 100 overall. The audit makes 20 recommendations in all, and 4 of the 4 listed first are rated high priority or critical.

CSTB's company profile names https://www.afnor.org, https://www.batiproduits.com and https://www.lemoniteur.fr as competitors. Its own llms.txt adds https://www.construction21.org and https://www.french-construction.com. Outside its market, the domains ranked closest to it in our worldwide ranking are saucegoku.com, demarque.com, elric.tech and thirdlove.com.

https://www.afnor.org

https://www.batiproduits.com

https://www.lemoniteur.fr

https://www.construction21.org

https://www.french-construction.com