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Data / France companies / Specialised construction activities / Seine-Maritime

Specialised construction activities in Seine-Maritime: 4,924 active companies

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

4,924 active companies in Seine-Maritime have a main activity in NAF division 43, specialised construction activities, in the Sirene register stock dated 1 November 2026. 284 were registered in the last 12 months, 15 of them in October 2026, and 2,218 have employees.

The request: Every company in Seine-Maritime in NAF division 43, specialised construction activities, registered since 2025, with SIREN, NAF code, address and employee band. $10 of work on sign-up, no card.

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  • 4,924Active companies
  • 284Registered in the last 12 months
  • 15Registered in October 2026
  • 2,218 (45.0%)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 202615
September 202626
August 202619
July 202619
June 202629
May 202619
April 202629
March 202631
February 202625
January 202639
December 202517
November 202516

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
2022257
2023271
2024279
2025283
2026 so far251

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 declared2,70655.0%
1 to 9 employees1,70834.7%
10 to 49 employees4689.5%
50 to 249 employees370.8%
250 employees or more50.1%

Industries

IndustryNAF codeActive companies
General masonry and building shell work43.99C863
Electrical installation in all premises43.21A629
Wood and PVC joinery installation43.32A613
Painting and glazing43.34Z519
Water and gas installation in all premises43.22A379
Roof covering with tiles and slates43.91B362
Heating and air conditioning installation43.22B273
Routine site preparation and earthworks43.12A184
Floor and wall covering43.33Z181
Plastering43.31Z144
Metal joinery and locksmith installation43.32B138
Insulation work activities43.29A129
Roof framing and carpentry43.91A117
Waterproofing work43.99A88
Other building completion and finishing43.39Z74
Other specialised construction activities43.99D69
Other construction installation n.e.c.43.29B36
Erection of metal structures43.99B31
Shop fitting43.32C26
Demolition43.11Z22
Renting of construction equipment with operator43.99E20
Specialised or large-scale earthworks43.12B13
Test drilling and boring43.13Z9
Electrical installation on public roads43.21B5

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
BK76 Renovation13191604126 October 202643.99CDieppeannuaire-entreprises.data.gouv.fr
Filtresociety13152892913 October 202643.34ZDeville-les-Rouenannuaire-entreprises.data.gouv.fr
RT2F1312735008 October 202643.21AMeulersannuaire-entreprises.data.gouv.fr
Quentin Vincent - Agencement Menuiserie1309273951 October 202643.32AHouppevilleannuaire-entreprises.data.gouv.fr
Normandie Concept 761307729401 October 202643.99CPetit-Couronneannuaire-entreprises.data.gouv.fr
DG761303541781 October 202643.99CLe Havreannuaire-entreprises.data.gouv.fr
Qualytherm1302966761 October 202643.22BBertrimontannuaire-entreprises.data.gouv.fr
Boutleux Electricite Pere et Fils13069858228 September 202643.21AEuannuaire-entreprises.data.gouv.fr
Assistance Plomberie Deschamps13054305121 September 202643.22ALe Havreannuaire-entreprises.data.gouv.fr
BMB Construction13019907821 September 202643.99CRouenannuaire-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.