Engineering activities for technical building equipment companies in Wilhelmshaven

Wilhelmshaven ·Currently listed companies in the Engineering activities for technical building equipment industry headquartered in Wilhelmshaven.

20 companies

BEX BauEXperten für Gebäude- und Energietechnik GmbH GmbH · HRB 219977 Oldenburg · 2023
49ef4bec62…
Express-Industrial-Service GmbH GmbH · HRB 221844 Oldenburg · 2019
f147a190a5…
Feuerschutztechnik und Industrieservice Dipl.- Ing. R. Weise GmbH GmbH · HRB 131658 Oldenburg · 2004
60377b3823…
GSTK ELT Fachplanung GmbH & Co. KG GmbH & Co. KG · HRA 208755 Oldenburg · 2025
e766feef37…
GSTK EPlanung GmbH GmbH · HRB 222761 Oldenburg · 2025
06b2801395…
GSTK HKLS Fachplanung GmbH & Co. KG GmbH & Co. KG · HRA 208805 Oldenburg · 2025
1e8408f6ff…
GSTK HKLSPlanung GmbH GmbH · HRB 222665 Oldenburg · 2025
f69f506aae…
Havenplan GmbH GmbH · HRB 206318 Oldenburg · 2011
85885ce514…
HIT HIGH TECH Ingenieurgesellschaft mbH GmbH · HRB 131480 Oldenburg · 2002
1cf223a8b8…
IBP Bauplan - Ingenieurgesellschaft mbH GmbH · HRB 130450 Oldenburg · 1996
ffc4c70939…
Ingenieurbüro EBL GmbH GmbH · HRB 219388 Oldenburg · 2023
9514a1fd93…
Ingenieurbüro FORMAT Gesellschaft für technische Information mbH GmbH · HRB 130351 Oldenburg · 1994
6b95585879…
Ingenieurbüro Schnieders GmbH GmbH · HRB 200354 Oldenburg · 2006
323da58d61…
keenlab UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 214642 Oldenburg · 2017
f31958f4bc…
MA Engineering e. K. e.K. · HRA 208020 Oldenburg · 2023
ce211e2219…
Marek & Sohn Altautoentsorgung GmbH GmbH · HRB 130511 Oldenburg · 1998
7bdd942268…
Nietiedt Planen & Bauen GmbH GmbH · HRB 217118 Oldenburg · 2021
d46d6dce21…
OMEGA TECHNOLOGY GmbH GmbH · HRB 130627 Oldenburg · 2000
ad35fc57ad…
OTTE Elektrotechnik GmbH GmbH · HRB 212132 Oldenburg · 2017
bdd710e496…
techmo UG (haftungsbeschränkt) Klima- und Energieberatung UG (haftungsbeschränkt) · HRB 32052 Bremen · 2017
1b411cdc03…

All industries in Wilhelmshaven

Live API

GEThandelsregister.ai/api/v1/search-organizations

?limit=20

&filters={"city":"Wilhelmshaven","industry_code":"71.12.3","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": "Wilhelmshaven",
        "industry_code": "71.12.3",
        "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": "Wilhelmshaven",
      "industry_code": "71.12.3",
      "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": "Wilhelmshaven",
        "industry_code": "71.12.3",
        "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":"Wilhelmshaven","industry_code":"71.12.3","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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