Engineering activities for technical building equipment companies in Bielefeld

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

31 companies · 1–20 of 31

4BUILD.Ing Automation GmbH GmbH · HRB 46285 Bielefeld · 2025
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AMW - Technik GmbH Anlagenbau, Meßregeltechnik und Wartungen für technische Gebäudeausrüstungen GmbH · HRB 35311 Bielefeld · 1995
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Anlagenbau Bayer & LTA GmbH GmbH · HRB 34099 Bielefeld · 1992
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Barkmann Energieberatung GmbH GmbH · HRB 45810 Bielefeld · 2024
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BAUBÜRO BEIDERBECK GmbH GmbH · HRB 30562 Bielefeld · 1977
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Behrendt Planungs-Gesellschaft mbH GmbH · HRB 41546 Bielefeld · 2014
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Burg Gebäudetechnik e.K. e.K. · HRA 17388 Bielefeld · 2024
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Buschmann Technische Gebäudeausrüstung GmbH & Co. KG GmbH & Co. KG · HRA 16904 Bielefeld · 2020
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DKM Schalt- und Steuerungsbau UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 45723 Bielefeld · 2024
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e & u energiebüro gmbh GmbH · HRB 35929 Bielefeld · 1997
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Favier Engineering GmbH GmbH · HRB 34323 Bielefeld · 1992
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GECAD GmbH GmbH · HRB 45867 Bielefeld · 2002
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HHP West Beratende Ingenieure GmbH GmbH · HRB 37993 Bielefeld · 2003
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Ingenieur- und Sachverständigenbüro Kramme GmbH & Co. KG GmbH & Co. KG · HRA 17371 Bielefeld · 2023
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Ingenieurbüro Michael Jakszt GmbH GmbH · HRB 35664 Bielefeld · 1997
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inno-plan GmbH GmbH · HRB 35180 Bielefeld · 1995
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inno-projekt GmbH GmbH · HRB 36850 Bielefeld · 2002
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IPE GmbH GmbH · HRB 36617 Bielefeld · 1999
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KE Gebäudetechnik GmbH GmbH · HRB 43546 Bielefeld · 2019
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Mario Kramer Planungs GmbH & Co. KG GmbH & Co. KG · HRA 16228 Bielefeld · 2014
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All industries in Bielefeld

Live API

GEThandelsregister.ai/api/v1/search-organizations

?limit=20

&filters={"city":"Bielefeld","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": "Bielefeld",
        "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": "Bielefeld",
      "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": "Bielefeld",
        "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":"Bielefeld","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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