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Data / France companies / Architectural and engineering activities; technical testing and analysis / Hauts-de-Seine

Architectural and engineering activities; technical testing and analysis in Hauts-de-Seine: 3,430 active companies

Updated November 7, 2026. Source: INSEE, base Sirene des entreprises et de leurs établissements, on data.gouv.fr.

3,430 active companies in Hauts-de-Seine have a main activity in NAF division 71, architectural and engineering activities; technical testing and analysis, in the Sirene register stock dated 1 November 2026. 194 were registered in the last 12 months, 9 of them in October 2026, and 1,284 have employees.

The request: Every company in Hauts-de-Seine in NAF division 71, architectural and engineering activities; technical testing and analysis, registered since 2025, with SIREN, NAF code, address and employee band. $10 of work on sign-up, no card.

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SpecStream is the live web data engine for teams and agents. It reads the Sirene register every month, and this page is that reading. Ask for the companies you track by industry, place or registration date and each new company arrives in your sheet, CRM, Slack or agent.

  • 3,430Active companies
  • 194Registered in the last 12 months
  • 9Registered in October 2026
  • 1,284 (37.4%)With employees
  • 1 November 2026Stock date

Registrations in the last 12 months

Active companies by the month their registration date falls in. The newest month is the last full month before the stock date.

MonthCompanies registered
October 20269
September 202619
August 20267
July 202614
June 202613
May 202613
April 202616
March 202621
February 202621
January 202636
December 202517
November 20258

Registrations per year

Companies registered in each year that are still active in the 1 November 2026 stock. Companies that closed earlier are not counted, so older years read low.

Year registeredActive companies
2022170
2023218
2024233
2025207
2026 so far169

By number of employees

The employee band the register holds for each company, as declared for its latest reference year.

EmployeesActive companiesShare
No employees or not declared2,14662.6%
1 to 9 employees82824.1%
10 to 49 employees2848.3%
50 to 249 employees1103.2%
250 employees or more621.8%

Industries

IndustryNAF codeActive companies
Engineering and technical consultancy71.12B2,449
Architectural activities71.11Z614
Technical testing, analysis and inspection71.20B291
Vehicle technical inspection71.20A49
Surveying activities71.12A27

Newest registered companies

Newest first. Only companies with a name that is clearly a business are listed; the counts above include every active company. Each row links to the public record.

CompanySIRENRegisteredNAF codeCommuneSource
Salasys Consulting13167217231 October 202671.12BBourg-la-Reineannuaire-entreprises.data.gouv.fr
ABC13198927924 October 202671.12BBoulogne-Billancourtannuaire-entreprises.data.gouv.fr
Nerilis13164643214 October 202671.12BChavilleannuaire-entreprises.data.gouv.fr
Valdur Capital1312209566 October 202671.12BSuresnesannuaire-entreprises.data.gouv.fr
Mtma1311672726 October 202671.12BMalakoffannuaire-entreprises.data.gouv.fr
Integrale Conseil AMO1312217232 October 202671.12BSevresannuaire-entreprises.data.gouv.fr
Diagonal Conseil IDF13092476429 September 202671.12BBoulogne-Billancourtannuaire-entreprises.data.gouv.fr
Upstone13068469924 September 202671.12BNeuilly-sur-Seineannuaire-entreprises.data.gouv.fr
Simandtech13060336823 September 202671.12BLe Plessis-Robinsonannuaire-entreprises.data.gouv.fr
Orovel13051548923 September 202671.12BCourbevoieannuaire-entreprises.data.gouv.fr

Licence Ouverte / Open Licence 2.0 (Etalab), source INSEE. Counts are of active companies in the Sirene register stock dated 1 November 2026: commercial companies (SARL, SAS, SA and the like) and civil companies such as SCI property companies. Sole traders, associations and public bodies are not counted, and the register lists dormant holding and property companies as active, so a count is of companies on the register, not of trading businesses. A company is counted under its main activity (NAF rev. 2 code) and the commune of its head office; companies whose register entry holds no NAF rev. 2 code are in the totals only. "With employees" means the register holds an employee band of one or more. Industry titles are English renderings of the INSEE labels. Contains data from INSEE, reused under the Licence Ouverte 2.0. This page is not endorsed by INSEE. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.