California homes are expensive. But that doesn't mean you can't afford one.
You need to know the math lenders use—and the real numbers you'll qualify for.
Quick formula: 3x to 4x your income
Simplest rule? You can afford a home 3-4x your gross annual income.
If you make $100K/year, expect $300K-$400K homes. In California, that might be a condo or Central Valley starter home.
But this is just a starting point. Real calculation is more nuanced.
What lenders actually use: DTI ratio
Lenders care about debt-to-income ratio (DTI), not what you think you can afford.
DTI = (Total Monthly Debt) ÷ (Gross Monthly Income)
Most loans max at 43% DTI. Some allow 50% with strong credit and reserves.
What counts as debt:
- Future mortgage (P, I, taxes, insurance, HOA)
- Car payments
- Student loans
- Credit card minimums
- Personal loans
Doesn't count:
- Utilities
- Groceries
- Insurance (except homeowners)
Tip: If DTI exceeds 43%, pay down debt before shopping. Even $200/month in student loans can cost $40K+ in buying power.
California examples (6.5% rate)
Example 1: $100K income, no debt
- Monthly income: $8,333
- Max DTI (43%): $3,583
- Taxes/insurance/HOA: ~$800
- Available for P&I: $2,783
- Home price: ~$450K
Example 2: $150K income, $600/month debt
- Monthly income: $12,500
- Max DTI (43%): $5,375
- Existing debt: $600
- Available for housing: $4,775
- Taxes/insurance/HOA: ~$1,200
- Available for P&I: $3,575
- Home price: ~$575K
Example 3: $200K income, $1,200/month debt
- Monthly income: $16,667
- Max DTI (43%): $7,167
- Existing debt: $1,200
- Available for housing: $5,967
- Taxes/insurance/HOA: ~$1,500
- Available for P&I: $4,467
- Home price: ~$725K
Down payment matters
More down = lower payment = more house you can afford.
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$500K home:
- 5% down ($25K): $3,088/month (at 6.5% + PMI)
- 10% down ($50K): $2,956/month
- 20% down ($100K): $2,837/month (no PMI)
20% down eliminates PMI and saves $200-300/month, letting you qualify for more house with same DTI.
Property taxes in California
California property tax: ~1-1.3% annually.
Examples:
- $400K home: $4,000-$5,200/year = $333-$433/month
- $600K home: $6,000-$7,800/year = $500-$650/month
- $800K home: $8,000-$10,400/year = $667-$867/month
Higher-tax counties (like Bay Area) push payments higher.
Insurance costs
California home insurance: $1,000-$5,000/year depending on location and wildfire risk.
High-risk areas: $3K-$5K annually
Low-risk areas: $1K-$2K annually
Factor this into affordability. In fire-prone zones, insurance can add $300-400/month.
HOA fees
Condos and townhomes often have HOA fees: $200-$800/month.
$400/month HOA = ~$75K less buying power because it counts in your DTI.
Use our calculator
Want exact numbers? Use our mortgage calculator.
Common mistakes
1. Maxing out qualification
Just because you qualify for $700K doesn't mean you should buy at $700K. Buy below max to avoid being house-poor.
Rule: Borrow 20% less than your max.
2. Forgetting about maintenance
Budget 1-2% of home value annually for repairs. $500K home = $5K-$10K/year.
3. Not accounting for rate changes
If rates rise before you close, your qualification drops.
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4. Ignoring closing costs
California closing costs: 2-3% of purchase price. On $500K, that's $10K-$15K.
How to increase buying power
1. Pay down debt
$300/month in debt = ~$60K more buying power when eliminated.
2. Increase down payment
More down = no PMI = lower payment = qualify for more.
3. Improve credit score
Higher score = lower rate = more buying power.
4. Add a co-borrower
Spouse or partner income increases qualification.
5. Consider different loan types
FHA allows higher DTI (sometimes 50%+) with strong credit.
Bottom line
Quick formula: 3-4x your income
Real formula: 43% DTI after accounting for all debt
Smart formula: Buy 20% below your max to avoid stress
Want to know exactly what you qualify for? Get A Quote.
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