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Data / France companies / Yvelines / Mezieres-sur-Seine

Companies in Mezieres-sur-Seine, Yvelines: 270 active companies by industry

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

270 active companies have their head office in Mezieres-sur-Seine, Yvelines, in the Sirene register stock dated 1 November 2026. 15 were registered in the last 12 months, 0 of them in October 2026, and 41 have employees.

The request: Every French company with head office in Mezieres-sur-Seine, with SIREN, NAF code, registration date, address and employee band. $10 of work on sign-up, no card.

Get companies in Mezieres-sur-SeineWatch new registrations in Mezieres-sur-Seine

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.

  • 270Active companies
  • 15Registered in the last 12 months
  • 0Registered in October 2026
  • 41 (15.2%)With employees
  • YvelinesDepartment
  • 78402Commune code

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 20264
July 20261
June 20260
May 20262
April 20261
March 20262
February 20262
January 20260
December 20251
November 20252

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
202210
202319
202425
202518
2026 so far12

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 declared22984.8%
1 to 9 employees3513.0%
10 to 49 employees62.2%
50 to 249 employees00.0%
250 employees or more00.0%

Biggest industries

A link opens the industry in this town where 80 or more companies list it.

IndustryNAF codeActive companies
Renting of land and other real estate68.20B93
Business and other management consultancy activities70.22Z12
General masonry and building shell work43.99C7
Computer systems and software consultancy62.02A7
Construction of detached houses41.20A6
Painting and glazing43.34Z5
Activities of holding companies64.20Z5
Fund management activities66.30Z5
Electrical installation in all premises43.21A4
Sale of cars and light motor vehicles45.11Z4
Renting of housing68.20A4
Activities of head offices70.10Z4
Landscape service activities81.30Z4
Maintenance and repair of light motor vehicles45.20A3
Retail sale via mail order houses with specialised catalogue47.91B3
Trusts, funds and similar financial entities64.30Z3
Real estate agencies68.31Z3
Engineering and technical consultancy71.12B3
Dental practice activities86.23Z3
Bakeries and bakery-pastry shops10.71C2
Water and gas installation in all premises43.22A2
Heating and air conditioning installation43.22B2
Wood and PVC joinery installation43.32A2
Floor and wall covering43.33Z2
Roof covering with tiles and slates43.91B2
Retail sale of food via stalls and markets47.81Z2
Taxi operation49.32Z2
Local road freight transport49.41B2
Other financial service activities, except insurance and pension funding, n.e.c.64.99Z2
Management of buildings and other real estate68.32A2
Public relations and communication activities70.21Z2
Combined office administrative service activities82.11Z2
Other personal service activities n.e.c.96.09Z2
Growing of cereals (except rice), leguminous crops and oil seeds01.11Z1
Manufacture of computers and peripheral equipment26.20Z1
Treatment and disposal of hazardous waste38.22Z1
Recovery of sorted materials38.32Z1
Construction of other buildings41.20B1
Construction of civil engineering structures42.13A1
Demolition43.11Z1

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 codeSource
Kalyx10513148611 May 202662.02Aannuaire-entreprises.data.gouv.fr
Vulk Energy1035461079 April 202647.91Bannuaire-entreprises.data.gouv.fr
Emgk1022857234 March 202643.33Zannuaire-entreprises.data.gouv.fr
Ekinoks9941954514 November 202596.02Bannuaire-entreprises.data.gouv.fr
Rivoli Enduit Peinture9943569881 October 202543.34Zannuaire-entreprises.data.gouv.fr
Cosmyd98937873218 July 202547.91Bannuaire-entreprises.data.gouv.fr
YB HOLDING Investissements98928415315 July 202570.10Zannuaire-entreprises.data.gouv.fr
LA Centrale des Pieces9908915171 July 202545.31Zannuaire-entreprises.data.gouv.fr
Dymrenov98830470516 June 202541.20Aannuaire-entreprises.data.gouv.fr
Osloma Groupe9430041191 April 202564.99Zannuaire-entreprises.data.gouv.fr
SV Immo94224590313 March 202568.20Bannuaire-entreprises.data.gouv.fr
ART Securite Privee9412788711 March 202580.10Zannuaire-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.