CNAE 4391-6/00 · Rio de Janeiro (RJ)
Foundation works in Rio de Janeiro (RJ)
73 active companies are headquartered in Rio de Janeiro (RJ) with this CNAE as their main activity. They represent 2.8% of Brazil's active companies with the same main activity.
Source: Receita Federal, CNPJ Open Data · October 2026 publication
The same activity in Brazil 2,618 · Rio de Janeiro 214
What this list shows
We count each active company once, by its head office in the city and this CNAE as its main activity. Branches and secondary activities are excluded from this scope. The total describes the registry, not market revenue or company quality.
- Companies in Rio de Janeiro (RJ)
- 73
- 2.8% of Brazil's
- Of every 100 companies in Rio de Janeiro (RJ)
- 0.0
- do this activity
- Among Rio de Janeiro's cities
- 1st
- by companies in this activity
Active companies in Rio de Janeiro (RJ)
More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 1 of 3- JBL CONSTRUTORA LTDARio de Janeiro (RJ)
- CONTEMAT ENGENHARIA E GEOTECNIA S ARio de Janeiro (RJ)
- COMINTER COMERCIO MINERACAO E TERRAPLANAGEM LTDARio de Janeiro (RJ)
- SOLOTESTE ENGENHARIA LTDARio de Janeiro (RJ)
- L.A FUNDACOES E OBRAS LTDARio de Janeiro (RJ)
- SEGEO-SERVICOS DE ENGENHARIA GEOTECNICA LTDARio de Janeiro (RJ)
- MAPA FUNDACOES E COMERCIO LTDARio de Janeiro (RJ)
- RIO BRANCO SERVICOS DE ENGENHARIA LTDARio de Janeiro (RJ)
- INCOMEX S A ENGENHARIA INDUSTRIA E COMERCIORio de Janeiro (RJ)
- PROENARC ENGENHARIA FUNDACOES LTDARio de Janeiro (RJ)
- PBA CONSTRUCOES LTDARio de Janeiro (RJ)
- TGPORT SERVICOS DE GEOTECNIA E FUNDACOES ESPECIAIS LTDARio de Janeiro (RJ)
- T.A. CONSTRUTORA E SERVICOS LTDARio de Janeiro (RJ)
- FE ENGENHARIA LTDARio de Janeiro (RJ)
- ECO FORTE CONSTRUCOES LTDARio de Janeiro (RJ)
- ENGEDRILL ENGENHARIA E GEOTECNIA LTDARio de Janeiro (RJ)
- NAZIREUS CONSTRUCOES LTDARio de Janeiro (RJ)
- FELIX CONSTRUCOES E OBRAS LTDARio de Janeiro (RJ)
- CYRIUS ENGENHARIA E INFRAESTRUTURA LTDARio de Janeiro (RJ)
- PETRUS BRAZIL CONSTRUCAO CIVIL LTDARio de Janeiro (RJ)
- BFM FUNDACOES LTDARio de Janeiro (RJ)
- ABN SERVICOS E VENDAS LTDARio de Janeiro (RJ)
- MCA ENGENHARIA E PROJETOS LTDARio de Janeiro (RJ)
- F. COSTA ENGENHARIA LTDARio de Janeiro (RJ)
- FEXAM ENGENHARIA AMBIENTAL E CONSULTORIA LTDARio de Janeiro (RJ)
- ALCANCE CONSTRUTORA LTDARio de Janeiro (RJ)
- GEOTESTE ENGENHARIA LTDARio de Janeiro (RJ)
- 55 SERVICOS E VENDAS LTDARio de Janeiro (RJ)
- LHAVYER SERVICOS EM GERAL LTDARio de Janeiro (RJ)
- EDECASA REFORMA E CONSTRUCOES LTDARio de Janeiro (RJ)
List limited to 73 companies, 30 per page. Looking for a specific company? Search by name or CNPJ.
How to assess a company's data
When you open a company's record, use these guides to check the data and understand what each field can establish.
- How to look up a CNPJ
Check identifiers, dates and registry fields against official sources.
- What an active CNPJ means
Active status does not show that a company is debt-free, licensed or able to operate.
- How to read partner and administrator records
Understand QSA roles and the limits on ownership and representation information.
How much the activity weighs
of every 100 active companies, how many do this activity
- Rio de Janeiro (RJ)0.0
- Rio de Janeiro0.0
- Brazil0.0
In Rio de Janeiro (RJ), the activity weighs less than in Brazil.
Rio de Janeiro's cities with the most companies in this activity
active companies and each city's share of the state
- 1 Rio de Janeiro 34.1% 73
- 2 Campos dos Goytacazes 9.8% 21
- 3 Niterói 7.0% 15
- 4 Duque de Caxias 5.1% 11
- 5 Cabo Frio 4.7% 10
- 6 Volta Redonda 3.7% 8
- 7 Rio das Ostras 3.3% 7
- 8 Nova Iguaçu 3.3% 7
- 9 São Gonçalo 3.3% 7
- 10 Itaboraí 2.8% 6
20 more cities
- 11 Itaperuna 6
- 12 Nova Friburgo 4
- 13 São Pedro da Aldeia 4
- 14 Itaguaí 3
- 15 Macaé 3
- 16 Magé 3
- 17 São Francisco de Itabapoana 2
- 18 Japeri 2
- 19 Mangaratiba 2
- 20 Paraty 2
- 21 São João da Barra 2
- 22 Três Rios 2
- 23 Carapebus 1
- 24 Belford Roxo 1
- 25 Queimados 1
- 26 Quatis 1
- 27 Areal 1
- 28 Angra dos Reis 1
- 29 Barra Mansa 1
- 30 Cordeiro 1
Class 4391-6 in Rio de Janeiro (RJ)
obras de fundações, by subclassClose to this: 0600-0/01 · Extraction of crude petroleum and natural gas, 384 companies in Rio de Janeiro (RJ).
What activity 4391-6/00 is
- A execução de fundações diversas para edifícios e outras obras de engenharia civil, inclusive a cravação de estacas
- A execução de reforço de fundações para edifícios e outras obras de engenharia civil
- O aluguel, com operador, de equipamentos para execução de fundações
Frequently asked questions
How many companies have main CNAE 4391-6/00 in Rio de Janeiro (RJ)?
73 active companies have CNAE 4391-6/00 as their main activity in Rio de Janeiro (RJ), according to the Receita Federal's October 2026 publication. That is 0.0 of every 100 companies there, against 0.0 in Brazil.
Which of Rio de Janeiro's cities has the most companies in this activity?
Rio de Janeiro, with 73, 34.1% of the state's companies in this activity.
Why can this total differ from the companies operating in the city?
This scope counts active companies by their head office and registered main activity. A company may operate in the city through a branch or carry out the activity as a secondary activity and be excluded from the count. The registered address and CNAE do not establish every operating location or service.
Does active status mean a company is qualified for a contract?
No. Active status describes the Receita Federal registration. It does not establish tax compliance, creditworthiness, licences, ability to fulfil a contract or quality. Check the relevant official documents and the contract's requirements.
How we count
Active companies with this as their main activity, counted by head office in Rio de Janeiro (RJ).