The cost of a timber-framed subfloor can vary depending on various factors such as the size of the project, the quality of materials used, labor costs in your area, and any additional features or requirements specific to your situation. However, I can provide a general estimate.

Keep in mind that this is a rough estimate, and actual costs may vary significantly based on the factors mentioned earlier. It’s always a good idea to obtain quotes from multiple contractors or suppliers to get a more accurate estimate for your specific project. Additionally, if your project has any unique requirements or features, such as special foundation conditions or architectural designs, the cost may be higher.