The renovation cost of installing an average size kitchen can vary greatly depending on whether you choose a custom, semi-custom, or stock/RTA kitchen, as well as the materials used and other factors such as your location and the complexity of the design. Here are some general guidelines to give you an idea of the typical cost ranges for each option:

1. Custom Kitchen: A custom kitchen is built to your exact specifications and can include high-end materials and features. The cost for a custom kitchen can range from $50,000 to $150,000 or more depending on the complexity of the design, materials used, and other factors.
2. Semi-Custom Kitchen: A semi-custom kitchen offers some customization options, but is pre-built with standard sizes and features. The cost for a semi-custom kitchen can range from $20,000 to $50,000 depending on the materials used, level of customization, and other factors.
3. Stock or RTA Kitchen: A stock or RTA (ready-to-assemble) kitchen is pre-made and usually the most affordable option. The cost for a stock or RTA kitchen can range from $5,000 to $20,000 depending on the materials used, size of the kitchen, and other factors.

It’s important to keep in mind that these are rough estimates, and the actual cost of your kitchen installation will depend on a variety of factors. It’s a good idea to get quotes from multiple contractors or kitchen suppliers to get a better idea of what your specific project will cost.