Engineering activities for construction project management of civil engineering constructions and transportation infrastructure companies in Oldenburg (Oldb.)

Oldenburg (Oldb.) ·Currently listed companies in the Engineering activities for construction project management of civil engineering constructions and transportation infrastructure industry headquartered in Oldenburg (Oldb.).

27 companies · 1–20 of 27

Bauplanung Nord-Oldenburg Gesellschaft mit beschränkter Haftung GmbH · HRB 437 Oldenburg · 1974
a0c3f07b59…
DEUTECS GmbH GmbH · HRB 212199 Oldenburg · 2017
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Eriksen und Partner GmbH, Planen und Beraten im Bauwesen GmbH · HRB 3428 Oldenburg · 1995
47cc9bcda7…
GEOLABOR NORD-WEST GmbH GmbH · HRB 213375 Oldenburg · 2018
db5803f199…
GEOMOLE GmbH GmbH · HRB 218827 Oldenburg · 2022
98d22fd088…
Gleiskontor Nord GmbH GmbH · HRB 210060 Oldenburg · 2015
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H + B Umweltpartner Ingenieurgesellschaft mbH GmbH · HRB 3906 Oldenburg · 1997
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HC Plan UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 220761 Oldenburg · 2024
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HuW Ingenieur GmbH GmbH · HRB 215499 Oldenburg · 2020
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IBP-Ingenieur-Gesellschaft mbH für Bauplanungen GmbH · HRB 1601 Oldenburg · 1983
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IFMB - Institut für Materialprüfung und Bauwerkserhaltung GmbH GmbH · HRB 214442 Oldenburg · 2019
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INFRACON Ingenieurgesellschaft mbH GmbH · HRB 221470 Oldenburg · 2024
056d95e743…
Ingenieurberatung Bröggelhoff GmbH GmbH · HRB 5021 Oldenburg · 2002
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Ingenieurgesellschaft Nordwest mit beschränkter Haftung GmbH · HRB 827 Oldenburg · 1978
a3742d2853…
Internationales Projekt Management Khorram GmbH GmbH · HRB 208790 Oldenburg · 2014
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kbg architekten Generalplanung GmbH GmbH · HRB 213248 Oldenburg · 2018
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PBV Gesellschaft für Planung, Bau und Verwaltung mbH GmbH · HRB 5363 Oldenburg · 1985
99b1353898…
plan4projects + baumanagement GmbH GmbH · HRB 215761 Oldenburg · 2020
ad6f3271a2…
Pohland Projektsteuerung GmbH GmbH · HRB 217717 Oldenburg · 2022
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Projektsteuerungsgesellschaft-OL mbH GmbH · HRB 217421 Oldenburg · 2021
498525c21d…

All industries in Oldenburg (Oldb.)

Live API

GEThandelsregister.ai/api/v1/search-organizations

?limit=20

&filters={"city":"Oldenburg (Oldb.)","industry_code":"71.12.1","industry_scheme":"WZ2025"}

# pip install handelsregister
from handelsregister import Handelsregister

client = Handelsregister(api_key="YOUR_API_KEY")  # or set HANDELSREGISTER_API_KEY
page = client.search_organizations(
    filters={
        "city": "Oldenburg (Oldb.)",
        "industry_code": "71.12.1",
        "industry_scheme": "WZ2025"
    },
    limit=20,
    skip=0,
)
print(page["total"])
for item in page["results"]:
    print(item["name"], item["registration"]["register_number"])

// npm install handelsregister
import { Handelsregister } from 'handelsregister';

const client = new Handelsregister('YOUR_API_KEY'); // or set HANDELSREGISTER_API_KEY
const page = await client.searchOrganizations({
  filters: {
      "city": "Oldenburg (Oldb.)",
      "industry_code": "71.12.1",
      "industry_scheme": "WZ2025"
  },
  limit: 20,
  skip: 0,
});
console.log(page.total);
for (const item of page.results) {
  console.log(item.name, item.registration.register_number);
}

// npm install handelsregister
const { Handelsregister } = require('handelsregister');

const client = new Handelsregister(process.env.HANDELSREGISTER_API_KEY);
(async () => {
  const page = await client.searchOrganizations({
    filters: {
        "city": "Oldenburg (Oldb.)",
        "industry_code": "71.12.1",
        "industry_scheme": "WZ2025"
    },
    limit: 20,
    skip: 0,
  });
  console.log(page.total);
  for (const item of page.results) {
    console.log(item.name, item.registration.register_number);
  }
})();

curl 'https://handelsregister.ai/api/v1/search-organizations?limit=20' \
  -H 'x-api-key: YOUR_API_KEY' \
  -G --data-urlencode 'filters={"city":"Oldenburg (Oldb.)","industry_code":"71.12.1","industry_scheme":"WZ2025"}'

{
    "results": [
        {
            "entity_id": "<32-char hex>",
            "name": "<string>",
            "registration": {
                "court": "<string>",
                "register_type": "<string>",
                "register_number": "<string>"
            },
            "address": {
                "house_number": "<string>",
                "street": "<string>",
                "postal_code": "<string>",
                "city": "<string>",
                "county": "<string>",
                "state": "<string>",
                "country": "<ISO country>",
                "coordinates": {
                    "latitude": "<float>",
                    "longitude": "<float>"
                }
            },
            "registration_date": "<ISO date>",
            "purpose": "<string>"
        }
    ],
    "total": "<int>",
    "meta": {
        "request_credit_cost": "<int>",
        "credits_remaining": "<int>"
    }
}

results[]

entity_id string

Stable 32-char hex identifier. Pass straight into /fetch-organization as `q`.

name string

Registered company name.

registration object

address object

Postal address with street, house_number, postal_code, city, county, state, country and coordinates (latitude/longitude).

registration_date date

Initial entry into the commercial register (ISO date).

purpose string

Stated business purpose (Unternehmensgegenstand).

top-level

total integer

Total result count for pagination.

meta.request_credit_cost integer

Credits actually charged for this call.

meta.credits_remaining integer

Account credit balance remaining after this call.

Location · Industry · Legal form · Full-text

Filters & master data — via search-organizations

City, industry, legal form, registration date: every argument combinable through the filters parameter. One REST endpoint, every German company.

Location & geo Filter by city, postal code, state and county through city, postal_code, state and county.
Industry (WZ2025) Industry segmentation via the official WZ2025 codes — industry_code combined with industry_scheme.
Legal form GmbH, AG, KG, OHG and more via legal_form_code.
Company size bs_company_size_category – small, medium, large based on balance-sheet totals.
Active status Restrict to active entries or include deleted companies via active.
Registration date Date ranges via registration_date_from and registration_date_to.
Full-text search Free-text query via the q parameter (min. 2 characters).
Pagination skip and limit (up to 30 results per call) for deep lists.
Master data per result entity_id, name, address, registration and registration_date – pass entity_id straight to /fetch-organization.

Run every filter live with an API key. Get an API key →

Code · AI-Agents · No-Code · Workflows

Drops into any stack

The search-organizations API speaks every mainstream client: REST, Python, Node, MCP for AI agents, n8n and webhook platforms.

REST API Simple GET request with the X-API-KEY header and JSON-encoded filters. Python requests, httpx or your favourite library — pass filters via json.dumps. Node.js fetch or axios with URLSearchParams. Works in edge, worker and browser runtimes. MCP Server Directly in Claude, Cursor or any MCP-aware AI client as the search_organizations tool. n8n Pre-built custom node for workflow automation — city, industry and size as filter inputs. Webhook Callable from Zapier, Make or any other webhook platform.

This list in your app

Grab an API key and filter every German company by city, industry, size and more — straight from your application. One REST endpoint, every result.

Get an API key

Filters & master data — via search-organizations

Drops into any stack

This list in your app

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