CAEN Code Rev. 3

4350

Special construction works for civil engineering projects

EU NACE Equivalent: NACE Rev. 3 — 4350

This code covers special construction works for civil engineering projects, such as deep foundations, piles, drilling works, grouting, ground consolidation, and support structures. It is used by specialized companies that perform complex infrastructure works, such as bridges, tunnels, dams, or highways. Activities include drainage works, anchors, sheet pile walls, and other geotechnical interventions.

Entrepreneur Profile

Acest cod este destinat antreprenorilor și firmelor specializate în lucrări de geniu civil, cum ar fi constructori de poduri, tuneluri, baraje, fundații speciale și consolidări de teren. Este potrivit pentru SRL-uri sau PFA-uri care dețin utilaje grele și personal calificat în geotehnică și hidrotehnică.

Who should avoid:

Avoid the exclusive use of code 4350 if the main activity of your company shifts towards other commercial or related branches not specified in the official description. See the excluded activities section below.

Authorization procedure and Trade Register aspects for CAEN 4350

For the registration with the Trade Register (ONRC) of the activity CAEN 4350 - Special construction works for civil engineering projects, the applicant submits the standard application together with the constitutive act. CAEN code 4350 falls under group 43 'Special construction works', and when completing the Affidavit according to Law 359/2004, it is stated that no prior operating authorizations are requested for the registered office. However, for the actual execution of the works, specific technical approvals from authorities such as the National Agency for Mineral Resources or local town halls are required. The documentation submitted to the Trade Register must include CAEN code 4350 as the main or secondary activity, and the administrator must have the legal capacity to bind the company.

Regulatory framework, specific approvals, and control institutions

Companies carrying out construction works for civil engineering projects (e.g., tunnels, bridges, dams, deep foundation works, or ground consolidation) are subject to the provisions of Law 50/1991 on authorizing the execution of constructions and Law 10/1995 on quality in construction. Activities specific to CAEN 4350 generally involve works requiring a building permit issued by the town hall. Additionally, for works involving the subsoil or geotechnically risky land, approvals from ANRM or environmental authorities may be necessary. Companies must have a certified technical expert in the field (according to GD 925/1995). Compliance with quality and occupational safety standards is ensured by the Territorial Labor Inspectorate and the Tax Authority (ANAF) regarding the correct declaration of income.

Tax management, ANAF audit risk, and specific accounting

From a fiscal perspective, income from civil engineering projects is declared to the Tax Authority (ANAF) based on execution contracts. It is recommended to correctly classify operations under the Fiscal Code, especially for VAT: the standard rate of 19% applies to construction works, except for reverse charge cases for subcontractors, according to Art. 331 of the Fiscal Code. Audit risk may arise in determining the VAT chargeability point (at invoice issuance or collection, depending on the option for VAT on collection). It is mandatory to issue invoices through the RO e-Factura system for B2G relationships and, after July 1, 2024, for all B2B operations.

Specific accounting includes recording work-in-progress costs (account 331), recognizing revenue based on the stage of completion (percentage of completion method), and properly managing material inventories. It is also essential to correctly declare the fiscal vector at ANAF to determine due taxes (profit tax or micro-enterprise income tax, as applicable). For companies exceeding the 500,000 lei threshold, the 16% profit tax applies. No specific fiscal facilities apply, but expenses for machinery and depreciation may be deducted within legal limits.


Included Activities

  • ✅ Deep foundation works, including bored and driven piles
  • ✅ Drilling and grouting works for ground consolidation
  • ✅ Execution of sheet pile walls and diaphragm walls
  • ✅ Anchoring and underground drainage works
  • ✅ Ground consolidation by jet grouting or stone columns
  • ✅ Tunnel and gallery works (excavations and supports)
  • ✅ Execution of dams and dikes
  • ✅ Dewatering and watercourse diversion works
  • ✅ Assembly of metal structures for bridges and footbridges

Excluded Activities

  • ❌ Construction of buildings (code 4120)
  • ❌ Electrical and plumbing installation works (codes 4321, 4322)
  • ❌ Finishing works (code 4330)
  • ❌ Engineering design and technical consultancy (code 7112)
  • ❌ Rental of construction machinery without operator (code 7732)

Întrebări Frecvente

What authorizations are needed to perform drilling and grouting works under this CAEN code?

For drilling and grouting works, a building permit issued by the town hall is required, and for drilling deeper than 50 m, an authorization from the National Agency for Mineral Resources may also be necessary. Additionally, the company must hold a construction attestation certificate (class A or B) issued by the Ministry of Development.

Can I use this CAEN code for repair works on existing bridges?

Yes, repair and consolidation works on bridges fall under this code, provided they involve special construction works (e.g., grouting, anchors, replacement of structural elements). For minor repairs (e.g., replacing parapets), they might fall under code 4399 (Other special construction works).