Insights

Stable rental leader GAG Immobilien AG owns nearly 44,000 apartments and is the largest landlord in Cologne, presenting a strong baseline of inventory and long-term occupancy needs suitable for property management enhancements, modernization, and tenant experience services.

Growth through development With ongoing Neubau projects and plans to stabilize affordable housing in Cologne, there are opportunities to engage in construction management, modular or sustainable build solutions, and post-construction property services for newly delivered units.

Mixed portfolio leverage In addition to managing own stock, GAG administers roughly 4,000 third-party apartments via WEG management, opening channels for outsourced property management, maintenance partnerships, and digital platform integrations for a broader portfolio.

Digital and security focus The tech stack includes TYPO3, Cloudflare protections, and privacy/security measures, indicating openness to further web modernization, customer experience tools, and secure tenant servicing platforms.

Financial scale signal Revenue in the mid-range of tens of millions suggests capacity for larger contracts in property services, software-enabled facilities management, and energy efficiency or sustainability initiatives across a sizable housing stock.

Similar companies to GAG Immobilien AG

GAG Immobilien AG Tech Stack

GAG Immobilien AG uses 8 technology products and services including Open Graph, TYPO3, JSON-LD, and more. Explore GAG Immobilien AG's tech stack below.

  • Open Graph
    Content Management System
  • TYPO3
    Content Management System
  • JSON-LD
    Javascript Frameworks
  • HSTS
    Security
  • Cloudflare Bot Management
    Security
  • Friendly Captcha
    Security
  • X-Content-Type-Options
    Web & Portal Technology
  • Apache HTTP Server
    Web Servers

GAG Immobilien AG's Email Address Formats

GAG Immobilien AG uses at least 2 format(s):
GAG Immobilien AG Email FormatsExamplePercentage
First.Last@gag-koeln.deJohn.Doe@gag-koeln.de
100%

Frequently Asked Questions

What is GAG Immobilien AG's phone number?

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You can contact GAG Immobilien AG's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is GAG Immobilien AG's official website and social media links?

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GAG Immobilien AG's official website is gag-karriere.de and has social profiles on LinkedIn.

What is GAG Immobilien AG's NAICS code?

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GAG Immobilien AG's NAICS code is 531 - Real Estate.

How many employees does GAG Immobilien AG have currently?

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As of July 2026, GAG Immobilien AG has approximately 218 employees across 2 continents, including EuropeAfrica. Key team members include Controller: F. K.Vorständin: A. B.Hr Learning & Development Expert: J. K.. Explore GAG Immobilien AG's employee directory with LeadIQ.

What industry does GAG Immobilien AG belong to?

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GAG Immobilien AG operates in the Real Estate industry.

What technology does GAG Immobilien AG use?

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GAG Immobilien AG's tech stack includes Open GraphTYPO3JSON-LDHSTSCloudflare Bot ManagementFriendly CaptchaX-Content-Type-OptionsApache HTTP Server.

What is GAG Immobilien AG's email format?

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GAG Immobilien AG's email format typically follows the pattern of First.Last@gag-koeln.de. Find more GAG Immobilien AG email formats with LeadIQ.

When was GAG Immobilien AG founded?

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GAG Immobilien AG was founded in 1913.
GAG Immobilien AG logo

GAG Immobilien AG

Real EstateNorth Rhine-Westphalia, Germany201-500 Employees

GAG Immobilien AG is a mid-sized real estate company based in Köln, North Rhine-Westphalia. It is the city’s largest landlord, with nearly 44,000 apartments spread across Cologne. Founded in 1913, the company has long built and managed housing estates that continue to shape many neighborhoods, with a number of properties protected as monuments. In addition to maintaining its existing stock, it pursues new development projects aimed at increasing the supply of affordable housing in the city.

While the core focus is the management of its own rental portfolio, GAG also administers roughly 4,000 external apartments through WEG management. In addition, the company acts as a developer in the self-owned and owner-occupied housing segment within Cologne. A comprehensive advisory and customer service approach supports residents living in Cologne.

Section iconCompany Overview

Phone number
NAICS Code
531 - Real Estate
Founded
1913
Employees
201-500

Section iconFunding & Financials

  • $25M$50M

    GAG Immobilien AG's revenue is estimated to be in the range of $25M$50M

Section iconFunding & Financials

  • $25M$50M

    GAG Immobilien AG's revenue is estimated to be in the range of $25M$50M

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