Quinn, who is single and lives alone, is physically disabled as a result of a diving accident. To live independently, he modifies his personal residence at a cost of $$30,000.$ The modifications included widening halls and doorways for a wheelchair, installing support bars in the bathroom and kitchen, installing a stairway lift, and rewiring so he could reach electrical outlets and appliances. Quinn pays $$200$ for an appraisal that places the value of the residence at $$129,000$ before the improvements and $$140,000$ after. As a result of the operation of the stairway lift, Quinn experienced an increase of $$680$ in his utility bills for the current year. Disregarding the AGI floor for medical expenses, how much of these expenditures qualify as medical expense deductions?