Engineering activities for technical building equipment companies in Köln

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

246 companies · 21–40 of 246

ASK Automationstechnik Straub Kausch GmbH GmbH · HRB 51743 Köln (Cologne) · 2003
184504568a…
Auftragsengel HT GmbH GmbH · HRB 100036 Köln (Cologne) · 2016
e88b923b83…
AUTECO Automation GmbH GmbH · HRB 20133 Köln (Cologne) · 1990
490cfdc3d4…
AVG Service GmbH GmbH · HRB 56352 Köln (Cologne) · 2005
9e78fdb3d6…
Bentec-Elektrotechnik GmbH GmbH · HRB 122254 Köln (Cologne) · 2025
740dc63f75…
Berndorff Contracting GmbH GmbH · HRB 61275 Köln (Cologne) · 2007
45b6274cc3…
Bert Böcking GmbH Planungsbüro Haustechnik GmbH · HRB 36199 Köln (Cologne) · 1999
e1e342e1a3…
Bertrandt Ingenieurbüro GmbH GmbH · HRB 26410 Köln (Cologne) · 1995
96d2e59b5e…
BEST Business & Engineering GmbH GmbH · HRB 79526 Köln (Cologne) · 2013
1c6dce1fd6…
BRANDI-IGH Ingenieure GmbH GmbH · HRB 50802 Köln (Cologne) · 1979
6d3fa9ee5c…
Brandschutztechnik Michels GmbH GmbH · HRB 107206 Köln (Cologne) · 2020
e95d87239c…
BTS Elektrotechnik GmbH GmbH · HRB 30151 Köln (Cologne) · 1998
40a7f5cb6f…
building equipment cologne GmbH GmbH · HRB 90124 Köln (Cologne) · 2017
d2ae6b65e3…
BUK Planungsgesellschaft für industrielle Automatiesierung mbH GmbH · HRB 25453 Köln (Cologne) · 1994
1398b5b33b…
bähr ingenieure GmbH GmbH · HRB 34886 Köln (Cologne) · 1995
a425e9f02e…
CAD-Plan+Service UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 116518 Köln (Cologne) · 2023
2881c6035b…
Calorelektrik GmbH GmbH · HRB 3926 Köln (Cologne) · 1969
a8a34c12c9…
CHEMITEC PROCESS AUTOMATION GmbH GmbH · HRB 95487 Köln (Cologne) · 2018
0eba69e07c…
Cologne HSE Gebäudetechnik GmbH GmbH · HRB 102351 Köln (Cologne) · 2020
5063e974d7…
Conception Bay GmbH GmbH · HRB 90572 Köln (Cologne) · 2017
33067a7050…

All industries in Köln

Live API

GEThandelsregister.ai/api/v1/search-organizations

?limit=20

&skip=20

&filters={"city":"Köln","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": "Köln",
        "industry_code": "71.12.3",
        "industry_scheme": "WZ2025"
    },
    limit=20,
    skip=20,
)
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": "Köln",
      "industry_code": "71.12.3",
      "industry_scheme": "WZ2025"
  },
  limit: 20,
  skip: 20,
});
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": "Köln",
        "industry_code": "71.12.3",
        "industry_scheme": "WZ2025"
    },
    limit: 20,
    skip: 20,
  });
  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&skip=20' \
  -H 'x-api-key: YOUR_API_KEY' \
  -G --data-urlencode 'filters={"city":"Köln","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

Cookie Settings

Customize Cookie Settings