The median home price in Nevada is $430,000. At 80% LTV, the typical loan is $344,000 at the current 6.90% average rate, producing a monthly P+I payment of $2,266. Total interest over 30 years at this rate: $471,610.
Property taxes in Nevada average 0.6% of assessed value, or $2,580 per year on the median home. This adds $215/month to your all-in housing cost. When evaluating a refinance, factor in property tax and insurance for a complete picture.
Nevada has no state income tax, so there is no state-level mortgage interest deduction. The federal deduction still applies on loans up to $750,000 for itemizers.