
Windows and doors for architects and planners
We offer you feasible, verifiable solutions from our own production — with verified details, complete documentation and smooth execution. We reduce liability risks, consulting and planning costs for you.
What good planning requires — and what we can do for you

Implementation security instead of time pressure
We know the dynamics of construction projects: Price renegotiations and delays delay everything. That is why we ensure flexible and timely processes with feasibility studies, fixed prices, our own production and RAL-certified assembly.
- Scheduling, logistics and assembly coordination
- Measurement, sampling, approvals — up to the parts list ready for assembly
- Deadline and cost security for your customers

Clear communication instead of complex coordination
It is difficult to mediate between builders and trades. We support you with verified evidence, complete documentation, continuous advice and coordination. Or exchange ideas directly with customers and trades.
- Heat, sound, safety, product and installation certificates
- Acceptance & service including warranty documents
- Maintenance service, spare parts, quick help for your customers

Design with quality instead of standards with sacrifices
When it comes to windows and doors, not only the quality but also the appearance — especially when it comes to special solutions. KOCHS combines customizable design diversity with reliable execution down to the last detail. This makes your design a reality.
- Detailed and detailed planning for windows & doors (connections, mounting, building physics, safety classes)
- Noticeable quality in construction and afterwards for your customers
Sponsored renovation? Our free guide for your advice
Our renovation and funding guide provides you with clear information and checklists for funding and window renovation. Our experts will also be happy to advise you and your customers personally and assist you in planning at an early stage as effective partners.

KOCHS — the partner from the Aachen region for architects and planners
In-house production & assembly
KOCHS has stood for high-quality windows and doors since 1955. Consulting, production and assembly from a single source enable you to make faster decisions through reliable figures, clean alternatives and realistic deadlines.
Technical understanding
We take planning processes into account. We deliver our CAD/BIM data, plan and editing details to suit your plan status. Verified details, standard-compliant solutions and complete documentation reduce your liability risk.
Permanent point of contact
One point of contact instead of five suppliers: You and your customers talk to our construction project expert on all questions — from the offer to the final consultation. This creates reliability, saves time and ensures clear responsibilities.
Individual solutions
Design, form, safety and energy efficiency: We professionally implement your individual requirements — not as an exception, but as part of our quality promise. You design, we provide feasibility and documentation.
Windows and doors as architectural accents
Services for your planning


Your point of contact

Patrick Carduck
Our expert for window and door renovation and new buildings. Experienced in working with architectural firms, he has a deep understanding of planning and project requirements.
Take your customers with you to our exhibition
Are you planning a project in the Aachen city region? Your customers can experience our windows and doors directly on site — feel free to drop by together. We are also available for individual consultation appointments outside opening hours.
Opening hours
Sat 09:00 — 13:00 (excluding spare parts sales)
Sun 14:00 — 17:00 (excluding advice and sales)
Am Boscheler Berg 5
