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OPUS CERTUM

ActiveSIREN number 353 339 385Simplified joint-stock company (SAS)Est. 199071.11 · Architectural activitiesParis 11e Arrondissement, Île-de-France
Official record (Annuaire des entreprises) ↗
Age36 years
older than 96% of its sector
Same activity, France22,658live companies · 853rd oldest
In Paris 11e Arrondissement53,742live companies · 553 in the same activity
At this address31live companies incl. this one
Employees6–9as registered · 2024

In brief

OPUS CERTUM is a simplified joint-stock company (SAS) registered in France on 1 January 1990. At 36 years old it is older than 96% of the 22,658 live companies whose main activity is architectural activities. Its registered office is in Paris 11e Arrondissement, Paris, Île-de-France, at an address shared with 30 other live companies. 553 live companies in Paris 11e Arrondissement share the same main activity.

Register details

Registered nameOPUS CERTUM
SIREN number353 339 385
Company typeSimplified joint-stock company (SAS)
Registered office45 Rue Sedaine, 75011 Paris
Nature of business (NACE Rev. 2.1 (French NAF 2025))71.11 Architectural activities
International sector (ISIC Rev.4)M · 71 Architectural and engineering activities; technical testing and analysis

Timeline

Register events, newest first.

  • Incorporated

Register entries

From the register.

Incorporated1 January 1990
Employees6–9 (2024)

Architectural activities in France

Live companies whose main activity is 71.11: 22,658 in total, median age 11 years, 833 incorporated in the past 12 months.

All 22,658 companies
This company's decadeOther decades
02,5005,0007,50010,0001900s: 51511900s1910s: 111910s1950s: 111950s1960s: 11111960s1970s: 1071071970s1980s: 6816811980s1990s: 1,8601,8601990s2000s: 5,0905,0902000s2010s: 7,8717,8712010s2020s: 6,9856,9852020s
Incorporated per year, still live
05001,0001,5002,0002011: 71520112012: 6312013: 66720132014: 7142015: 76620152016: 8572017: 1,01120172018: 8892019: 97520192020: 9992021: 1,01920212022: 1,0822023: 99720232024: 1,1112025: 1,08620252026: 691

Location

Registered office in Paris 11e Arrondissement, Paris, Île-de-France.

Live companies in Paris 11e Arrondissement53,742
Same activity in Paris 11e Arrondissement553
Live companies in Paris907,999
New in Paris 11e Arrondissement, past 12 months2,483

Also registered at this address

30 other live companies share this registered office; shown are those incorporated closest in time to this one.

Similar companies

Live companies with the same main activity, nearest first.

Compare all
CL
C.D.K. L'ARCHITECTUREParis 19e Arrondissement, Île-de-France
Number 352 755 383Est. 1990
YD
YARD DANIEL GUILBERTParis 11e Arrondissement, Île-de-France
Number 352 786 362Est. 1990
PH
PATRICK HURPIN ARCHITECTE EURLParis 15e Arrondissement, Île-de-France
Number 353 064 827Est. 1990
SM
SARL MAUFRAS ET ASSOCIESParis 15e Arrondissement, Île-de-France
Number 353 276 454Est. 1990
SC
STEPHANIE CAUCHOIX DECORATIONParis 7e Arrondissement, Île-de-France
Number 353 489 727Est. 1990
AA
ATELIER ARCOS ARCHITECTUREParis 20e Arrondissement, Île-de-France
Number 353 823 883Est. 1990

Sources

Register data: Insee, Sirene database of companies and establishments (Licence Ouverte / Open Licence 2.0), delivery of 21 October 2026. Territories: Insee, Code officiel géographique 2026. Industry names: European Union, EU Vocabularies (NACE Rev. 2.1). Context figures are computed by FirmsDB from these sources. This page is not an official register; check the company's entry in the French government business directory before relying on it.