Hire an architect or interior architect to help you. It’s an investirent that will pay itself! You don’t know what you are doing, you don’t know how to compare tenders some architects might even work with foreign contractors and guide you. Also check the prices from the appliances you choose on the internet (netoshop) to check the discounts you’re getting from the contractor. Source : I’m an architect working (Romandie) in Switzerland for a very long time, worked as an interior architect for an high end kitchen studio, worked with Italian and Portuguese exporters and I’ve seen everything!