Development of building projects for other buildings and constructions companies in Köln

Köln ·Currently listed companies in the Development of building projects for other buildings and constructions industry headquartered in Köln.

44 companies · 1–20 of 44

a p b Baubetreuungs- und Bauträgergesellschaft mbH GmbH · HRB 27298 Köln (Cologne) · 1996
b4074a97dd…
ACON GmbH GmbH · HRB 88885 Köln (Cologne) · 2016
cd52ee2e29…
AMI GmbH GmbH · HRB 43187 Köln (Cologne) · 2001
5f4de14b2d…
AMIDI Bau UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 118369 Köln (Cologne) · 2024
61a1753bf4…
ARMEDA YAPI INSAAT EMLAK SANAYI VE TICARET LIMITED SIRKETI Zweigniederlassung Deutschland Ltd. · HRB 108118 Köln (Cologne) · 2021
835528e849…
ASN BAU GmbH GmbH · HRB 90885 Köln (Cologne) · 2017
db64cc1b8a…
Atelier Dolfen Bauleitungen GmbH GmbH · HRB 33169 Köln (Cologne) · 2000
9d986364db…
B2 Baugesellschaft mbH GmbH · HRB 98239 Köln (Cologne) · 2008
f2260be42b…
BauData Projektentwicklungs- und Beratungsgesellschaft mbH GmbH · HRB 55161 Köln (Cologne) · 2001
772d9aff3d…
BauKultur Projektentwicklung GmbH GmbH · HRB 104966 Köln (Cologne) · 2021
e21fc17703…
Bauwens Projektentwicklungs GmbH GmbH · HRB 43081 Köln (Cologne) · 2002
fbda5b95e0…
Bergsch Verwaltungs-GmbH GmbH · HRB 109728 Köln (Cologne) · 2022
2ffe5e626b…
BK Bau GmbH GmbH · HRB 17462 Bochum · 2018
499863071d…
Bossmann GmbH Köln GmbH · HRB 94151 Köln (Cologne) · 2018
06eb25026d…
Brauckmann GmbH GmbH · HRB 5807 Köln (Cologne) · 1973
72c2137204…
Cunningham Contracts Europe GmbH GmbH · HRB 122267 Köln (Cologne) · 2025
d4f41074a6…
DI Deutsche Interbau GmbH GmbH · HRB 82382 Köln (Cologne) · 2014
b9c5aec77c…
EGK Bau & Service GmbH GmbH · HRB 74960 Köln (Cologne) · 2012
21481ac0ca…
Felix Deutsch GmbH GmbH · HRB 107282 Köln (Cologne) · 2021
35c6316272…
Focsspeed Projektentwicklung GmbH GmbH · HRB 119424 Köln (Cologne) · 2024
579bf3e644…

All industries in Köln

Live API

GEThandelsregister.ai/api/v1/search-organizations

?limit=20

&filters={"city":"Köln","industry_code":"68.12.3","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": "68.12.3",
        "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": "Köln",
      "industry_code": "68.12.3",
      "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": "Köln",
        "industry_code": "68.12.3",
        "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":"Köln","industry_code":"68.12.3","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