By Mike Fake ยท March 2026 ยท 5 min read
You've probably heard it before: "You can afford a home that's 3x your annual income." Or maybe the popular advice to keep your mortgage payment under 28% of your gross income. These rules of thumb were created in a very different interest rate environment โ and in most of California, they're simply not realistic anymore.
Let me walk you through how I actually help clients figure out what they can comfortably afford in Encinitas and North County San Diego.
Why the Old Rules Fall Short
The 28% rule was born in an era of 4โ5% mortgage rates and much lower home prices. Apply it today and you'd need a household income of $180,000+ just to afford a $900,000 home โ which is close to median in Encinitas. That math discourages a lot of buyers who could actually qualify and comfortably handle the payment.
Lenders look at something called your Debt-to-Income ratio (DTI) โ your total monthly debt payments divided by your gross monthly income. Most conventional loans allow up to 45โ50% DTI. FHA loans can go even higher in some cases. That's meaningfully different from the 28% guideline most people have in their heads.
The Real Calculation I Use
When a client sits down with me, here's what I actually look at:
- Gross monthly income โ all sources: salary, self-employment, rental income, etc.
- Existing monthly debts โ car payments, student loans, credit card minimums
- Estimated housing payment โ principal, interest, property taxes, homeowner's insurance, and HOA if applicable
- Cash reserves after closing โ lenders want to see you're not wiped out
I then model several scenarios at different price points so clients can see exactly what their monthly payment looks like โ and what's left over for life.
A Real-World Example
Let's say you and your partner earn a combined $180,000/year ($15,000/month gross). You have a car payment of $500 and student loan minimums of $300. That's $800 in existing debt. With a 45% DTI ceiling, you could have total monthly debts of $6,750. Subtract existing debts and you have $5,950 for a housing payment.
At today's rates, a $5,950 monthly payment (including taxes and insurance) on a 30-year fixed loan supports roughly a $950,000โ$1,000,000 purchase price with 10โ20% down. That's a real home in Carlsbad or inland Encinitas.
The Comfort Factor
Qualifying for a loan and being comfortable with the payment are two different things. I always ask clients: what payment would let you sleep at night? Some people are comfortable stretching; others need more breathing room. Both are valid โ and I help you find the number that works for your life, not just on paper.
Get Your Real Number
Skip the online calculators that give you a rough guess. A 15-minute call with me will give you an accurate, lender-reviewed number that you can actually use when you start shopping.
Find Out What You Can Afford
Free pre-qualification โ know your real number before you start shopping.
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