A short cut is that a college that does not require financial aid forms other than FAFSA (which states that home equity is to be excluded in questions 41 and 89) ignores home equity. However, there could be colleges that require additional financial aid forms that also ignore home equity.
Note also that just because a college ignores home equity does not mean that its financial aid offer will be good. So you may have to run all those net price calculators anyway.