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.
According to an annual construction cost survey by Remodeling Magazine, a mid-range remodel of a 5x7-foot bathroom averages $14,109-$18,864; for an upscale expansion of a 5x7 bathroom to 9x9-feet within the existing house footprint, costs run $46,865-$59,456. These are averages; actual costs may be higher or lower.