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As experienced real estate agents, you can rely on us to provide comprehensive services for the purchase, sale, and rental of your property.

It is important to us to get to know our customers and their requirements. This enables us to offer you exactly the service you want—and need. We do not offer off-the-shelf services: trust, transparency, discretion, and absolute reliability are important values for us. A personal contact person will always take care of your concerns.

Real estate in the Düsseldorf, Mettmann, Ratingen, and Velbert areas

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Services

Service & Expertise

  • Sell property

    Our professional team accompanies you throughout the entire sales process. Our transparent approach ensures security and success.

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  • property valuation

    A qualified property valuation is an essential starting point for all your considerations. Our expert appraisers will accurately and professionally determine the market value of your property, suggest a promising asking price, and prepare comprehensive market value reports.

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  • Sell real estate discreetly

    Would you like your property to be marketed discreetly and quietly? We are the right partner for all questions relating to real estate marketing. You can rely on our discretion and our excellent contacts.

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  • Commercial & Investment

    Our specialists have access to an extensive network, expertise, and experience in handling challenging transactions.

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  • consulting

    As consultants, we assist you with purchase and sale decisions on a fee basis. We provide you with expert and trustworthy support during negotiations.

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  • Real estate rental

    Are you looking for a new tenant? We are sure to find a suitable and trustworthy tenant for your property. We conduct credit checks on all prospective tenants, work exclusively with the latest forms from Haus und Grund, and remain at your side until the handover.

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  • Service for property developers

    We understand your goals as a property developer and speak the language of your potential buyers. While you concentrate on the construction, we take care of the professional marketing. We know the region and the preferences of potential buyers. Our large network opens new doors to expanded buyer groups and shortens your marketing time.

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  • financing

    Solid financing is the key to realizing your dream of owning your own home. At Kartheuser Immobilien, we understand the challenges that come with real estate financing and offer you customized solutions tailored to your individual needs.

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  • Shuttle service

    To help you attend your appointments related to the sale of your property conveniently and hassle-free, we offer a shuttle service for a fee. We will pick you up at a location of your choice by appointment and reliably take you to your appointment. This service is available exclusively in connection with appointments for the preparation or execution of the sale of your property. Our goal is to make the process as pleasant and stress-free as possible for you. You don’t have to worry about getting there or finding parking, so you can focus entirely on your appointment. Please feel free to contact us if you would like to use our shuttle service for your sales appointment.

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Customer testimonials

What our customers say about us

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Real Estate Guide

As experienced real estate agents, we are at your side in every situation in life.

  • Speculation period for real estate sales—an overview of everything you need to know - ©art_maltsev

    Speculation period: What you need to know about the taxation of capital gains on real estate sales

    Imagine you bought a property as an investment nine years ago and now want to sell it. The selling price is significantly higher than the original purchase price and you are already looking forward to a considerable profit. But before you realize this profit, you learn that capital gains may be taxable. This is where the so-called speculation period comes into play.

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  • Real estate & divorce: How to avoid a war of the roses

    Growing old together—that's the life plan of all couples who buy a property. In reality, unfortunately, this dream does not always come true, and at some point, the decision is made to go their separate ways. This is a truly stressful situation for both parties.

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  • Start Building Your Dream Home Today: Everything You Need to Know About Home Loans

    A conversation at the kitchen table can sometimes shed more light on things than hours of online research. This was certainly the case during our Kartheuser Kitchen Chat with mortgage expert Michael Meier. For over 20 years, he has been helping people on their journey to homeownership—with independent advice, a large network of banks, and a clear goal: to find the best possible financing for his clients. Let’s take a look together at the most important questions surrounding mortgage financing—in a practical, understandable way, with a touch of real-world applicability.

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  • When someone dies and everyone argues: inheriting and bequeathing real estate

    Inheriting means saying goodbye to someone. For many people, inherited property is the first property they own. This often leads to feeling overwhelmed, because in the midst of mourning, it is difficult to deal with suddenly owning real estate.

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  • Your property in old age: what is the right decision?

    Your own home is full of memories, but your needs change as you get older. Is my property still right for me? Should I convert it to make it barrier-free, sell it, or perhaps rent it out to supplement my pension?

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  • What is my property worth?

    property exchange

    Times and life change. Yesterday, the children were still sitting at the breakfast table with you, but today many rooms are unused. Or perhaps you are delighted to have more adorable offspring, but unfortunately your home is not growing with you. Whatever the case, your own four walls simply no longer suit your life situation and your needs. And in the tight real estate market, you can't easily find a more suitable home. As described above, this is the case for many homeowners.

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  • Quality of life in old age: security through your property

    Life in your own home is full of memories and emotions. Moving house is particularly difficult for older people to imagine. You don't want to give up your own home, you don't want to lose the neighbors and friends you've known for years, you want to remain your own "master."

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  • Multi-family homes as an investment: What you should look out for

    In times of volatile financial markets and ongoing inflation concerns , more and more investors are looking for stable investment opportunities. Multi-family homes have established themselves as a particularly stable and high-yield capital investment. But what should you look out for when buying a multi-family home? What factors influence the return on investment? And what tax aspects need to be taken into account? Our comprehensive guide provides valuable insights and practical tips for your investment in apartment buildings.

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Of course

Our contribution to climate protection

Plant a tree today, see a forest tomorrow.

News

Current topics

14.05.2026

19th Pig Run – Running Together for a Good Cause

This year, we had the opportunity to sponsor the Pig Run for the first time, and we are delighted to have been part of this special event. Despite the rainy weather, more than 700 participants took to the starting line. The positive atmosphere, the great dedication, and the high motivation of everyone involved impressively demonstrated the significance of the Schweinelauf in the region. For many years, the Schweinelauf has stood for community, solidarity, and social engagement. Together with the Lions Club, numerous volunteers, sponsors, and supporters, we once again organized an event that brings people together while supporting important social projects. We are particularly pleased with the outcome of the event: a total of around 20,000 euros was raised for social institutions and projects in the region. Among those benefiting from this support are the Wülfrath Food Bank, the Youth Red Cross, the WIR-Haus, the DRK Farbenfroh Kindergarten, and the Lions Hilfswerk Mettmann-Wülfrath. We would like to extend our heartfelt thanks to all the organizers, volunteers, runners, and spectators who contributed to the success of the 19th Schweinelauf. We are proud to have supported this event and are already looking forward to next year’s anniversary edition—the 20th Schweinelauf.

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04.05.2026

Background information, insights, perspectives—our new magazine

We at Kartheuser Immobilien are proud to present our brand new magazine. Here you can take a look behind the scenes of our daily work as real estate agents.

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15.04.2026

For our planet—plant a tree today, see a forest tomorrow

This year, we are continuing our commitment: For every successful placement, we plant new trees. Part of our team was on-site in Ratingen and actively supported the reforestation effort. Everyone should plant at least one tree in their lifetime. As a company that places great value on sustainability and environmental awareness, we want to actively do our part. Because quality, experience, satisfied customers—and a good feeling—are inseparable for us. This applies not only to our daily work but also to environmental and climate protection. 👉 That’s why, together with our partner PLANT-MY-TREE®, we plant a new tree for every contract we broker.

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Contact

How can we help you?

Let's talk about your concerns. We place great value on personal consultation. Of course, we will treat your concerns discreetly and confidentially.

Just give us a call and get in touch with us without obligation. We look forward to hearing from you.

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Real estate agent for Düsseldorf, Mettmann, Ratingen, Velbert, and the surrounding area

Real estate sales and real estate listings in North Rhine-Westphalia: As real estate agents in Düsseldorf, Mettmann, Ratingen, Velbert, and the surrounding area, as well as beyond, we are more at home in the region and the local real estate market than almost any other agent.

We are also happy to advise you on the purchase or sale of commercial real estate and real estate investments. Just get in touch with us.

Sell or rent a house or apartment in North Rhine-Westphalia

Simple & personal – our comprehensive database contains a wide range of properties for sale and purchase, verified prospective buyers, and a large network of service providers. This enables us to provide you with the best possible support when buying or selling your property.

Our specialists provide you with individual advice: on the value of your property, on increasing its value through conversion or renovation measures, on buying or selling your single-family home, multi-family home, or condominium, and on investment properties.

Our services as real estate agents in and around Mettmann, Ratingen, and Velbert

  • Property valuation by trained experts: How much is my property worth?
  • Buying a house or apartment in North Rhine-Westphalia
  • Selling a house or apartment in the North Rhine-Westphalia area
  • Prospective buyer management
  • Virtual 360-degree tours or personal on-site viewings
  • Drone footage and professional texts
  • Advice on drawing up purchase agreements or rental agreements
  • Finding tenants or landlords in Düsseldorf, Mettmann, Ratingen, Velbert, and the surrounding area
  • Referrals to tradespeople, movers, and other real estate-related service providers
  • Support and documentation of handover dates
  • Support with billing

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