10 Mortgage Mistakes California Buyers Make (And How to Avoid Them)

I've seen California buyers lose their dream homes, waste thousands, or get stuck with terrible loans — all from avoidable mistakes.

After 15 years and hundreds of transactions, here are the 10 biggest errors I see.

I'm Bill McCoy (CA DRE #01212512). Learn from others' pain.

1. Shopping for Homes Before Getting Pre-Approved

The mistake: Touring homes without knowing what you can afford.

What happens:

• Fall in love with a $750K home
• Get pre-approved for $600K
• Heartbreak

Or worse:

• Find the perfect home
• Make an offer
• Seller accepts another buyer who was already pre-approved
• You lose the house

Solution: Get pre-approved BEFORE you start shopping.

See how to get pre-approved

2. Ignoring Your Credit Until You Apply

The mistake: Checking credit for the first time when you apply for a mortgage.

What happens:

• Collections you forgot about
• Errors on your report
• Lower score than expected
• Higher rate or denial

Real story: Client got pre-approved at 6.5%. Went under contract. Underwriter found a new $2,500 collection. Credit score dropped 40 points. New rate: 7.25%. Extra $200/month for 30 years = $72,000.

Solution: Check credit 3-6 months before buying. Fix errors. Pay off collections.

Learn how to improve your credit

3. Financing a Car Right Before Buying a House

The mistake: Buying a car (or furniture, or anything with a payment) during the mortgage process.

What happens:

• Your DTI increases
• Lender re-runs credit before closing
• Sees new debt
• Loan denied at closing

Real story: Client financed a $50K Tesla 2 weeks before closing. Lender caught it. DTI went from 42% to 49%. Loan denied. Lost the house + $15K in deposits and inspection costs.

Solution: Don't change ANYTHING financial between pre-approval and closing. No new credit. No big purchases. No job changes.

Broker's Tip: Lenders pull credit again 3 days before closing. They will catch new debt. Don't risk it.

4. Draining Your Savings for the Down Payment

The mistake: Using every dollar you have for down payment + closing costs.

What happens:

• Zero reserves
• Lender may require reserves (2-6 months)
• Loan denied

Or:

• Loan closes, but you're broke
• AC breaks (California heat = $8K repair)
• No emergency fund
• Can't pay mortgage

Real story: Buyer used every penny for 20% down. Week after moving in, roof leaked. No money for repairs. Tried to get HELOC, couldn't qualify. Ended up selling 8 months later at a loss.

Solution: Keep 3-6 months of expenses in savings AFTER closing.

5. Not Shopping Multiple Lenders

The mistake: Using the first lender you talk to (or your agent's "preferred lender").

What happens:

• Overpay in rate and fees
• Miss better loan options

Real story: Client got quote from big bank: 6.75% + $6,000 fees. Came to me: 6.25% + $3,000 fees. Saved $250/month + $3K upfront = $93K over 30 years.

Solution: Get quotes from 2-3 lenders. Compare rates AND fees.

See how to shop mortgage rates

6. Choosing the Lowest Rate Without Understanding Costs

The mistake: Lender A: 6.0%. Lender B: 6.25%. You pick A.

What you missed:

• Lender A: $12,000 in fees
• Lender B: $4,000 in fees

Break-even: 5+ years to recoup the extra $8K in fees.

If you sell in 3 years, Lender B was cheaper.

Solution: Compare APR (annual percentage rate), which includes fees.

7. Waiving Contingencies to Win in a Bidding War

The mistake: Removing inspection or appraisal contingencies to make your offer more attractive.

What happens:

• Home appraises $30K low
• You have to bring extra $30K or lose your deposit
• Or inspection finds $50K in foundation issues
• No contingency = you're stuck

Real story: Buyer waived appraisal contingency on a $900K home. Appraised at $850K. Lender wouldn't lend on $900K. Buyer had to bring $50K extra cash or walk and lose $25K deposit. Scrambled to get money from family. Stressful mess.

Solution: Only waive contingencies if you have cash reserves to cover worst-case scenarios.

8. Overestimating Rental Income on Investment Properties

The mistake: Zillow says rent is $3,500. You assume that's what you'll get.

Reality:

• Vacancy (1-2 months/year)
• Repairs and maintenance (10% of rent)
• Property management (8-10% if you hire someone)
• Turnover costs

Actual cash flow: $3,500 rent - $3,800 expenses = -$300/month

You're losing money.

Solution: Use conservative estimates. Budget for vacancies. Run real numbers before buying.

9. Not Reading Loan Documents

The mistake: Signing whatever the lender sends without reading.

What you miss:

• Prepayment penalties
• Balloon payments
• Adjustable rates (when you thought it was fixed)
• Hidden fees

Real story: Client signed ARM thinking it was fixed. Didn't read docs. Year 6, rate adjusted from 4% to 7%. Payment went up $800/month. Couldn't afford it. Had to sell.

Solution: Read the Loan Estimate and Closing Disclosure carefully. Ask questions. If something seems off, push back.

10. Believing "Rent is Throwing Money Away"

The mistake: Buying because you're tired of renting, even if the math doesn't work.

What happens:

• Buy a condo with $600 HOA
• Mortgage + HOA + taxes + insurance = $4,200/month
• Could rent same condo for $3,000/month
• You're paying $1,200/month extra to "build equity"
• But most of your payment is interest, not principal
• You're actually losing money

Real story: Client bought $650K condo in SF. HOA $550, taxes $700, insurance $200, mortgage $3,200. Total: $4,650/month. Could rent for $3,200. After 3 years, sold for $640K (market dropped). Lost $10K on sale + paid $52K extra vs. renting = $62K loss.

Solution: Run the rent vs. buy math honestly. Sometimes renting is smarter.

Compare buy vs rent

Broker's Tip: Buying makes sense if you're staying 5+ years and can afford the payment comfortably. Don't buy just because you "should" own.

Bonus Mistakes

11. Lying on your application. = Mortgage fraud. Felony. Don't.

12. Ignoring property taxes. California prop tax = 1.25% of purchase price annually. Budget for it.

13. Skipping the home inspection. $500 inspection can save you $50K in repairs.

14. Not understanding PMI. If you put less than 20% down, you pay PMI ($200-$400/month). Know when you can remove it.

15. Forgetting about HOA fees. $300/month HOA = $108K over 30 years. Factor it in.

FAQ

Q: Can I recover from a mortgage mistake?
A: Often yes. Refinance, sell, or work with your lender to modify. But prevention is better.

Q: What's the costliest mistake you've seen?
A: Client bought investment property without checking local rent control laws. Couldn't raise rent. Lost $50K over 5 years and sold at a loss.

Q: Should I use my real estate agent's "preferred lender"?
A: Maybe. But shop around. Agents often get kickbacks. Compare independently.

Q: What if I already made one of these mistakes?
A: Call me. We can often fix or minimize the damage.

Avoid These Mistakes

Work with an experienced broker who looks out for your interests.

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Better Offers Inc | CA DRE #01212512
Protecting California buyers since 2011