CNAE 4391-6/00 · Piauí

Obras de fundações in Piauí

18 active companies are headquartered in Piauí with this CNAE as their main activity. They represent 0.7% 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 Piauí: 18; 0.7% of Brazil's
Of every 100 companies in Piauí: 0.0; do this activity
Among Brazil's federative units: 18th; by companies in this activity

Active companies in Piauí

More active establishments and higher registered capital first. This order is not a quality assessment or recommendation.

ALEIXO CONSTRUTORA LTDAGilbués (PI)
GEOBRAS EMPREENDIMENTOS LTDATeresina (PI)
OMEGA CONSTRUTORA LTDATeresina (PI)
MD CAMPOS CONSTRUCOES LTDATeresina (PI)
P & K CARDOSO CONSTRUCAO LTDAParnaíba (PI)
CONSTRUTORA JARQUES LTDATeresina (PI)
R&R ALMEIDA SERVICOS E CONSTRUCOES LTDATeresina (PI)
AMORIM & SANTOS LTDAParnaíba (PI)
HIDROLIVRE INSTALACOES E COMERCIO LTDATeresina (PI)
BC CONSTRUCOES CIVIS LTDATeresina (PI)
SANTOS & RODRIGUES LTDA.Teresina (PI)
F J DE OLIVEIRACapitão de Campos (PI)
FRANCISCO DAS CHAGAS LOPES SILVALuzilândia (PI)
DOMINGOS DE SOUZA SILVAPiripiri (PI)
FRANCISCO DAS CHAGAS LOPES DE ASSISPiripiri (PI)
ERIELDO DE SOUSA GOMESSão João do Piauí (PI)
L. LUSTOSA DE SOUZABrasileira (PI)
F D ALVES GONCALVESPedro II (PI)

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

Piauí0.0
Brazil0.0

In Piauí, the activity weighs less than in Brazil.

Piauí's cities with the most companies in this activity

active companies and each city's share of the state

1 Teresina 44.4% 8
2 Parnaíba 11.1% 2
3 Piripiri 11.1% 2
4 Capitão de Campos 5.6% 1
5 Gilbués 5.6% 1
6 Luzilândia 5.6% 1
7 Pedro II 5.6% 1
8 São João do Piauí 5.6% 1
9 Brasileira 5.6% 1

Class 4391-6 in Piauí

obras de fundações, by subclass

Close to this: 4313-4/00 · Obras de terraplenagem, 133 companies in Piauí.

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 Piauí?

18 active companies have CNAE 4391-6/00 as their main activity in Piauí, 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 Piauí's cities has the most companies in this activity?

Teresina, with 8, 44.4% 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 Piauí.