The biggest mistake homeowners make comparing quotes is looking only at the bottom-line number. A $22,000 quote and a $28,000 quote aren't comparable unless the scope, materials, and allowances are actually the same - one may exclude permits, disposal, or fixture costs the other includes.
The practical advice: ask each contractor for a line-item breakdown, not just a total, and confirm what allowances are built in for tile, fixtures, and appliances. A remodeler who provides this kind of detail unprompted looks more trustworthy than one who hands over a single number - which is exactly why publishing this advice, and then delivering detailed quotes yourself, works as both content and practice.