Flip with the retrofit value-add
Underwrite the green premium separately from cosmetic reno math.
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30%
Energy retrofit
$22,500
Qualifies for Efficiency Maine rebates
Cosmetic / structural
$52,500
Standard renovation budget
Retrofit portion
Efficiency Maine rebates
$5,625
Net retrofit cost
$16,875
Annual savings (rental)
$2,025/yr
Flip math
Total cash in
$294,375
Holding cost total
$7,200
Net flip profit
$83,425
ROI
27.7%
Annualized ROI
55.3%
Hold period
6 mo
Properties with these specific retrofits sell for an average of 4–7% more in comparable markets.
Green premium on ARV
$15,400 – $26,950
Profit w/ premium
$98,825 – $110,375
Effective ROI w/ premium
32.8% – 36.6%
With the green premium accounted for, your effective ROI widens to roughly 32.8% – 36.6%.
0%
0%
0 mo
Adjusted ARV
$385,000
Adjusted reno spend
$75,000
Adjusted flip profit
$83,425
Estimates only. Rebate amounts depend on equipment selection, contractor participation, and program availability. Mortgage assumes 75% LTV at 7% / 30-year. IRR calculations approximate; ignore amortization detail and assume sale at adjusted ARV at exit.