Home Affordability Calculator
Determine your true Orange County purchasing power based on current lender DTI guidelines, your income, and local property taxes.
Income & Debts
Loan Parameters
Local OC Factors
Based on your parameters.
Financial Breakdown
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Max Loan Amount$0
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Target Monthly Payment (PITI + HOA)$0
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Available for Principal & Interest$0
How HOA Dues Kill Buying Power
This calculator is specifically tuned for the Irvine market. Notice the HOA field. Because underwriters include HOA dues in your strict Debt-to-Income (DTI) ratio, a $400 monthly HOA fee in a neighborhood like Woodbury directly subtracts from the mortgage payment you can qualify for. At current interest rates, every $100 in monthly HOA dues reduces your maximum purchase price by roughly $15,000.
The 45% DTI Reality
While some national sites tell you to limit housing to 28% of your income, this is often mathematically impossible in Orange County. We default this calculator to a 45% Back-End DTI. This means your total housing payment (PITI + HOA) plus your existing monthly debts (car loans, credit cards) cannot exceed 45% of your gross monthly income. Jumbo loans may require stricter ratios, while FHA allows higher limits.