Engineering activities for technical building equipment companies in Villingen-Schwenningen

Villingen-Schwenningen ·Currently listed companies in the Engineering activities for technical building equipment industry headquartered in Villingen-Schwenningen.

20 companies

365 TGA GmbH Planungsbüro für technische Gebäudeausrüstung GmbH · HRB 734979 Freiburg (Freiburg im Breisgau) · 2026
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3pi GmbH GmbH · HRB 726788 Freiburg (Freiburg im Breisgau) · 2022
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AB ENG GmbH GmbH · HRB 734302 Freiburg (Freiburg im Breisgau) · 2025
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AP Industrie & Gebäudetechnik GmbH GmbH · HRB 721829 Freiburg (Freiburg im Breisgau) · 2020
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BSC Brandschutz Pfeffer GmbH GmbH · HRB 729393 Freiburg (Freiburg im Breisgau) · 2023
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EE-Experten GmbH GmbH · HRB 728245 Freiburg (Freiburg im Breisgau) · 2023
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Effektivplan GmbH Ingenieurbüro für Verfahrens- und Anlagentechnik GmbH · HRB 716681 Freiburg (Freiburg im Breisgau) · 2017
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ENGINEERING FOR YOU GmbH GmbH · HRB 715210 Freiburg (Freiburg im Breisgau) · 2016
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Forplan Technology AG - Zweigniederlassung Deutschland - AG · HRB 717384 Freiburg (Freiburg im Breisgau) · 2017
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Grüne Naturenergie GmbH GmbH · HRB 727227 Freiburg (Freiburg im Breisgau) · 2022
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HRE - Häuser Rüb Engineering GmbH GmbH · HRB 731585 Freiburg (Freiburg im Breisgau) · 2024
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KONZMANN Gebäudetechnik GmbH GmbH · HRB 602857 Freiburg (Freiburg im Breisgau) · 2003
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LM - Engineering GmbH GmbH · HRB 733857 Freiburg (Freiburg im Breisgau) · 2025
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N.O.C. Engineering GmbH GmbH · HRB 701216 Freiburg (Freiburg im Breisgau) · 2007
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PG Planung GmbH GmbH · HRB 722796 Freiburg (Freiburg im Breisgau) · 2020
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plus-energie GmbH Ingenieurgesellschaft für Gebäudetechnik und Energieplanungen GmbH · HRB 701394 Freiburg (Freiburg im Breisgau) · 2007
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Reiner Oberle, German Electrical & Mechanical Contractors GmbH GmbH · HRB 601504 Freiburg (Freiburg im Breisgau) · 1990
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Stackforest GmbH GmbH · HRB 730791 Freiburg (Freiburg im Breisgau) · 2024
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SW Energie GmbH GmbH · HRB 602659 Freiburg (Freiburg im Breisgau) · 2001
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Tri Air Deutschland GmbH GmbH · HRB 729075 Freiburg (Freiburg im Breisgau) · 2023
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All industries in Villingen-Schwenningen

Live API

GEThandelsregister.ai/api/v1/search-organizations

?limit=20

&filters={"city":"Villingen-Schwenningen","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": "Villingen-Schwenningen",
        "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": "Villingen-Schwenningen",
      "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": "Villingen-Schwenningen",
        "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":"Villingen-Schwenningen","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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