CNAE 4391-6/00 · Rio Grande do Sul

Obras de fundações in Rio Grande do Sul

134 active companies are headquartered in Rio Grande do Sul with this CNAE as their main activity. They represent 5.1% 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

What this list shows

We count each active company once, by its head office in this state 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 Grande do Sul: 134; 5.1% of Brazil's
Of every 100 companies in Rio Grande do Sul: 0.0; do this activity
Among Brazil's federative units: 6th; by companies in this activity

Active companies in Rio Grande do Sul

More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 1 of 5

CONSTRUTORA CATTANEO LTDACruz Alta (RS)
TRIFERRO CONTENCOES E FUNDACOES ESPECIAIS LTDAEldorado do Sul (RS)
ESTAQ SONDAGENS E FUNDACOES LTDAAlvorada (RS)
EYP BRASIL CONSTRUCAO LTDA.Canoas (RS)
MGS - FUNDACOES ESPECIAIS LTDAPorto Alegre (RS)
FUNDERS FUNDACOES E ESTAQUEAMENTOS LTDAIjuí (RS)
HIDROTECNICA POCOS ARTESIANOS LTDACanoas (RS)
CORDEIRO & SANTOS INCORPORACOES E CONSTRUCOES LTDAPorto Alegre (RS)
PIER27 INCORPORADORA LTDA SCPCaxias do Sul (RS)
GEOMAX SERVICOS DE ENGENHARIA LTDAPorto Alegre (RS)
FABIO FERNANDES CARDOSO LTDALajeado (RS)
SERKI FUNDACOES LTDA -Porto Alegre (RS)
CONSTRUTORA FOLLMER LTDANão-Me-Toque (RS)
DESF ENGENHARIA DE SOLOS LTDAPorto Alegre (RS)
MARCIANO F. HOPPE & CIA. LTDA.Agudo (RS)
CONSTRUTORA AVANNCO LTDACaxias do Sul (RS)
J&J PERFURACOES HORIZONTAL DIRECIONAL MND LTDAViamão (RS)
ESTACAS BRASIL LIMITADASanta Cruz do Sul (RS)
MULTISOLOS ESTAQUEAMENTO E SONDAGEM LTDAPasso Fundo (RS)
FUNDAGEO FUNDACOES LTDAPorto Alegre (RS)
CERUTTI & CIA LTDANovo Hamburgo (RS)
FUNDACOES C.A LTDAVila Flores (RS)
BASE FORTE ESTAQUEAMENTO LTDAVila Flores (RS)
VOLPE & SANA - SERVICOS DE ENGENHARIA LTDA.Porto Alegre (RS)
ENGESF - SONDAGENS E FUNDACOES LTDAPorto Alegre (RS)
MEGASOLOS ENGENHARIA E FUNDACOES LTDAPasso Fundo (RS)
NIMAR TERRAPLENAGEM E CONSTRUCOES LTDABarra Funda (RS)
AUSTRAL FUNDACOES LTDAGravataí (RS)
JR FUNDACOES LTDAPorto Alegre (RS)
SULBASE ESTAQUEAMENTOS LTDAPasso Fundo (RS)

List limited to 134 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 Grande do Sul0.0
Brazil0.0

In Rio Grande do Sul, the activity weighs less than in Brazil.

Rio Grande do Sul's cities with the most companies in this activity

active companies and each city's share of the state

1 Porto Alegre 28.4% 38
2 Canoas 6.0% 8
3 Pelotas 6.0% 8
4 Caxias do Sul 4.5% 6
5 Passo Fundo 3.7% 5
6 Santa Maria 3.0% 4
7 Esteio 2.2% 3
8 Gravataí 2.2% 3
9 Montenegro 2.2% 3
10 Torres 2.2% 3

20 more cities

Class 4391-6 in Rio Grande do Sul

obras de fundações, by subclass

Close to this: 4313-4/00 · Obras de terraplenagem, 2,501 companies in Rio Grande do Sul.

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

See everything this activity covers

Frequently asked questions

How many companies have main CNAE 4391-6/00 in Rio Grande do Sul?

134 active companies have CNAE 4391-6/00 as their main activity in Rio Grande do Sul, 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 Grande do Sul's cities has the most companies in this activity?

Porto Alegre, with 38, 28.4% of the state's companies in this activity.

Why can this total differ from the companies operating in this state?

This scope counts active companies by their head office and registered main activity. A company may operate in this state 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 Grande do Sul.