When planning a renovation, many homeowners hear terms like the 30 percent rule in remodeling and wonder what it actually means. Like many rules of thumb in home improvement, it is not a law or fixed formula. Instead, it is a budgeting guideline used to help homeowners make practical decisions about renovation spending. In general, the 30 percent rule refers to the idea that you should be cautious about spending more than roughly 30 percent of your home’s value on a remodelin