Equal respect
A small bathroom, an apartment renovation and a larger investment deserve the same responsibility and professional approach.
Renovation & Project Management
Reliable execution.
Responsible management.
Trust built over decades. Coortron delivers renovations, modernisations and interior projects in Germany and across the European Union.
35+
years of practical experience in renovation, finishing and project coordination
35+years of experience
Germanyour primary market
European Unionprojects where appropriate
Project Managementplanning, coordination and quality control
About Coortron
Experience that turns complexity into order.
Coortron specialises in renovations, interior modernisation and the management of execution projects.
Based in Germany, we work mainly on the German market and, where appropriate, in other European Union countries. Our experience also includes many years of work in Poland.
Behind the Coortron brand are more than 35 years of practical experience — not only in standard construction work, but also in solving technical problems, correcting workmanship errors and leading demanding projects.
We do not build our reputation through grand declarations. It is built through completed projects, responsibility for our work and the trust of clients who entrust us with their homes and investments.
Our aim is to maintain that trust, while welcoming new clients who expect professional conduct, transparent cooperation, quality and respect.
Our philosophy
Every project matters.
Respect for time
We communicate the scope, sequence and realistic timing of work clearly.
Respect for budget
We discuss solutions, costs and alternatives before they become a source of misunderstanding.
Clear communication
The client should know what is happening, what has been completed and what comes next.
Responsibility
We do not shift problems onto the client and we do not avoid conversations when clarification or correction is required.
Quality before haste
Speed has no value when it leads to errors, repairs and additional costs.
Project Management
Good management starts before work begins.
Coortron is not only a renovation contractor. For larger projects, we can take responsibility for organising and coordinating the entire execution process.
This includes analysing the investment scope, determining the sequence of work, preparing the schedule and matching the right contractors to each stage.
- planning the execution process
- defining the order of work
- preparing the schedule
- organising contractors and subcontractors
- coordinating individual teams
- supervising progress
- quality control
- verifying completed stages
- communication between client and contractors
- preparing the project for handover
We do not overload a construction site with people. Every team needs enough time, space and proper conditions to do its work well. Good organisation matters more than apparent speed.
The goal is a predictable process, fewer interruptions, maintained quality and clear control for the client.
Services
Renovation, modernisation and coordination.
Apartment renovations
House renovations
Bathrooms
Kitchens
Tiling
Modernisation
Renovation and restoration
Conversions
Project Management
Team coordination
Why Coortron
Practical experience. Clear responsibility.
35+ years of experience
Based in Germany
Projects in Germany and the EU
Transparent settlements
Stage-based payments
Warranty for completed work
Responsibility for projects
Business liability insurance
Proven work organisation
Individual client approach
Transparent cooperation
The client always knows what is happening.
For larger investments, the work is divided into clearly defined stages.
Each stage has an agreed scope, an expected completion time and a corresponding settlement.
Current work
The client knows which work is being carried out.
Completed stage
It is clear which part of the project has been finished.
Next step
The next phase is communicated in advance.
Payment
The client knows exactly what each payment covers.
Transparent rules are one of the foundations of mutual trust.
Partners
Partners
This section will be completed after receiving permission to publish partner names and logos.
Articles
Technical knowledge has value only when it can be used in practice, applied and assessed after many years.
Contact
Tell us about your project.
Planning a renovation, modernisation or need support with a larger project? Contact us.
Claudia Marie Bonkowski
Founder | Project Manager
E-mail: info@coortron.eu
Website: www.coortron.eu
Tel: +49 155 686 745 79
Tel: +49 157 580 927 39
Tel/Fax: +49 2104 211 89 35
Legal notice
Legal notice
Provider information under § 5 DDG
Coortron — Renovation & Project Management
Claudia Marie Bonkowski
Schildsheider Str. 48
40699 Erkrath
Germany
Contact
Phone: +49 155 686 745 79
Phone: +49 157 580 927 39
Phone/Fax: +49 2104 211 89 35
E-mail: info@coortron.eu
Website: www.coortron.eu
Additional mandatory information
[Legal form, VAT ID, register information and competent supervisory authority will be added where applicable.]
Privacy policy
Privacy policy
1. Controller
Coortron — Renovation & Project Management, Claudia Marie Bonkowski, address as stated in the legal notice, e-mail: info@coortron.eu.
2. General principle
This website does not use analytics, marketing or tracking services and does not set non-essential cookies. No user profiles are created and no personal data is collected for advertising purposes.
3. Technically necessary processing
When a website is accessed, the hosting provider may process technically necessary server log data, in particular the IP address, time of access, requested file, browser type and operating system. This processing serves the secure and trouble-free provision of the website. The legal basis is Article 6(1)(f) GDPR. The specific retention period depends on the hosting provider and will be added once hosting has been selected.
4. Contact
When the contact form is submitted, the information entered is transmitted to the Coortron web server and forwarded by e-mail to info@coortron.eu. The data is used only to process and answer the enquiry and is not used for advertising. The legal basis is Article 6(1)(b) GDPR for pre-contractual enquiries and otherwise Article 6(1)(f) GDPR.
5. Storage on the device
The selected language version is stored only locally in the browser. This storage is necessary to display the expressly selected language again during a later visit. It is not used for analytics or advertising. The legal basis is § 25(2)(2) TDDDG.
6. Rights of data subjects
Under the GDPR, data subjects have in particular the right of access, rectification, erasure, restriction of processing, data portability and objection, as well as the right to lodge a complaint with a data protection supervisory authority.
Declaration: Coortron operates this website without tracking, analytics, advertising, newsletters, user accounts or its own database. After the hosting provider has been selected, this text will be supplemented with the provider’s specific technical information and retention periods.