By the late 1860's, Darwin came to describe this process as the survival of the fittest. This is very different from Lamarck's incorrect idea that the environment altered the shape of individuals and that these acquired changes were then inherited.
On average, you should budget $10,000 to $30,000 for a bathroom remodel, says Paloma Contreras, a Houston-based interior designer behind La Dolce Vita and member of the National Kitchen & Bath Associationâs new trend forecasting panel, the NKBA K+B Insiders.
Bathroom Remodel Average Costs. Use the following national bathroom remodel estimates to get a better idea of how much your project will cost: 1  Expect to pay $15,000 to $20,000 for a comprehensive, mid-range bathroom remodel, although bigger and/or more extensive projects could easily cost $25,000 to $50,000 or more. Expect to pay $15,000 to $20,000 for a comprehensive, mid-range bathroom remodel, although bigger and/or more extensive projects could easily cost $25,000 to $50,000 or more. 2  When undertaken as a DIY project, the same remodel might only cost $5,000 to $10,000.