Skip to the page

Data / France companies / Architectural activities / Hauts-de-Seine

Architectural activities in Hauts-de-Seine: 614 active companies

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

614 active companies in Hauts-de-Seine have a main activity in NAF code 71.11Z, architectural activities, in the Sirene register stock dated 1 November 2026. 17 were registered in the last 12 months, 0 of them in October 2026, and 217 have employees.

The request: Every company in Hauts-de-Seine with NAF code 71.11Z, architectural activities, registered since 2025, with SIREN, head office address and employee band. $10 of work on sign-up, no card.

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.

  • 614Active companies
  • 17Registered in the last 12 months
  • 0Registered in October 2026
  • 217 (35.3%)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 20260
September 20260
August 20260
July 20262
June 20262
May 20265
April 20262
March 20262
February 20261
January 20261
December 20252
November 20250

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
202220
202330
202421
202521
2026 so far15

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 declared39764.7%
1 to 9 employees18830.6%
10 to 49 employees274.4%
50 to 249 employees20.3%
250 employees or more00.0%

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
SSA Construction1071305854 June 202671.11ZColombesannuaire-entreprises.data.gouv.fr
Polymere10585851820 May 202671.11ZBoulogne-Billancourtannuaire-entreprises.data.gouv.fr
Design BY FLO1047095306 May 202671.11ZCourbevoieannuaire-entreprises.data.gouv.fr
Gram Architecture & Design1038606071 May 202671.11ZSuresnesannuaire-entreprises.data.gouv.fr
Atelier Roggwiller Architectes Associes10246951710 March 202671.11ZBoulogne-Billancourtannuaire-entreprises.data.gouv.fr
Powesco SPV 19949876755 December 202571.11ZBoulogne-Billancourtannuaire-entreprises.data.gouv.fr
Studio So.l9945060791 December 202571.11ZMontrougeannuaire-entreprises.data.gouv.fr
BTP Star 9299345165724 October 202571.11ZBagneuxannuaire-entreprises.data.gouv.fr
Reages9891111418 July 202571.11ZSaint-Cloudannuaire-entreprises.data.gouv.fr
A3 Studio99139939526 June 202571.11ZSaint-Cloudannuaire-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.