Pre-approval is where buying a home actually starts. Before touring a single open house, before hiring an agent, before any Zillow scrolling counts as productive — get a real pre-approval. In San Diego's competitive segments, listing agents won't even present an offer without one. Here's how to do it right.
Pre-Qualification vs. Pre-Approval
These terms get used interchangeably, but they mean very different things. Getting this wrong costs buyers deals in competitive markets.
| Feature | Pre-Qualification | Pre-Approval |
|---|---|---|
| Documentation | None — stated income/assets | Full income, asset, credit docs |
| Credit Pulled | Soft pull or none | Hard pull (all 3 bureaus) |
| Underwriting | None | Automated or full review |
| Time to Obtain | 5-15 minutes | 1-3 days typically |
| Weight with Sellers | Minimal | Standard requirement |
| Validity | Informational only | 60-120 days |
Don't Confuse the Two
A "pre-qualification" letter you got from an online form in 3 minutes is not the same thing as a pre-approval. In San Diego's competitive segments, a listing agent will often call the lender to confirm the pre-approval is real. If yours is only a pre-qual, you can be out-competed by a better-prepared buyer.
What Documents You'll Need
Gathering documents before applying saves days of back-and-forth. Here's the standard pre-approval documentation package:
Pre-Approval Document Checklist
Identity & Demographics
- Government-issued photo ID
- Social Security number
- Current address history (2 years)
- Current landlord contact (if renting)
Income (Employed)
- Last 2 pay stubs (30 days)
- Last 2 years W-2s
- Last 2 years federal tax returns
- Employer contact for verification
Income (Self-Employed)
- 2 years personal tax returns (all schedules)
- 2 years business tax returns (if applicable)
- Year-to-date profit & loss
- Business license (if applicable)
Assets
- Last 2 months all bank statements (all pages)
- Last 2 months investment / retirement statements
- Source documentation for large deposits
- Gift letter (if down payment gift)
Debts & Other
- Current mortgage statements (existing properties)
- Current lease agreement (rental income)
- Divorce decree / child support orders
- Bankruptcy discharge (if applicable)
The Pre-Approval Timeline
- Day 1 — Application. Complete the lender's application (typically online). Submit document package. Lender pulls credit.
- Day 1-2 — Initial review. Loan officer reviews documents, runs the file through automated underwriting (DU for conventional, LP for Freddie, TOTAL for FHA).
- Day 2-3 — Pre-approval issued. If the file clears automated underwriting with minimal conditions, you get a pre-approval letter with a maximum loan amount, rate snapshot, and expiration date.
- Day 3+ — Shopping with confidence. Your agent now writes offers using your pre-approval letter.
More complex files — self-employed borrowers, non-traditional credit, high DTI — can take 5-10 days for pre-approval. Pre-approvals are typically valid 60-120 days; after expiration, you update employment, assets, and credit to refresh.
What Lenders Actually Look At
Credit Score & Report
Not just the three-digit score. Underwriters review the full credit report: payment history, credit mix, utilization, length of accounts, recent inquiries, any derogatory items. A FICO of 740 with clean history beats a 760 with a recent 30-day late on any account.
Debt-to-Income Ratio (DTI)
Monthly debt payments divided by gross monthly income. Two ratios matter:
- Front-end DTI — just the new housing payment (PITI + HOA) ÷ income. Target under 28-31%.
- Back-end DTI — housing + all other debt ÷ income. Typical max 43-50% depending on program.
In San Diego, front-end DTI is often the binding constraint — the PITI on a median-priced home is high enough that it alone can exceed 28% of a median income.
Assets & Reserves
Lenders verify you have enough to cover down payment + closing costs + reserves. Reserves requirement varies:
- Conventional (owner-occupied, 1 unit): 0-2 months typical
- FHA: usually none required, but helpful
- VA: none required, but residual income must be sufficient
- Jumbo: 6-12 months typical
- Investment property: 6+ months plus reserves on other properties
Employment & Income Stability
2 years of consistent employment is the baseline. Exceptions:
- Recent graduates: degree + time in field treated as qualifying work history
- Job switch within same field: generally fine, especially with pay stub in hand
- Self-employed: 2 years of tax returns usually required
- Recently bonused/commissioned income: averaged over 24 months
The most common pre-approval mistake is applying while any income volatility is still in motion — a new job starting next month, a business reorganization, equity vesting events mid-year. Wait for the dust to settle, get one full month's pay stub on the new setup, then apply.
San Diego Mortgage Calculator · Editorial
Rules to Follow Between Pre-Approval & Close
Your pre-approval is a snapshot. Anything that changes your financial profile before close can blow it up. Follow these rules:
- Don't change jobs. Lenders re-verify employment the day of close.
- Don't open new credit. No new cards, auto loans, or store financing.
- Don't make large undocumented deposits. Every non-paycheck deposit over $1,000 gets a source-of-funds question.
- Don't close credit cards. Lowers your available credit and can temporarily drop your score.
- Don't co-sign anything. A friend's car loan shows up as your debt on the credit report.
- Don't miss payments on any account, even ones you're planning to pay off at close.
- Do keep documentation ready. Underwriters will ask for updated pay stubs and bank statements as close approaches.
Shopping Multiple Lenders
Always get at least 2-3 pre-approval quotes. Even 0.25% on a San Diego-sized loan is tens of thousands over the loan's life. How to do it correctly:
- Apply with all lenders within 14 days. Credit scoring systems treat multiple mortgage inquiries within a 14-45 day window as a single inquiry — no additional score damage.
- Request Loan Estimates on the same day. The 3-page Loan Estimate form lets you compare apples-to-apples: rate, points, lender fees, third-party costs.
- Compare Annual Percentage Rate (APR), not just note rate. APR reflects rate + fees and is the true cost-of-borrowing number.
- Mix lender types. One mortgage banker, one mortgage broker, one credit union or portfolio bank. Pricing can vary meaningfully.
How to Make Your Pre-Approval Stand Out
In San Diego's competitive segments, not all pre-approval letters are created equal. Here's how to strengthen yours:
- Use a fully-underwritten pre-approval. Some lenders run your file past a real underwriter (not just automated approval) for a stronger letter sometimes called "Certified Approval" or "Fast Close Ready."
- Include a reserves statement. Attach a cover note from your lender confirming reserves above the loan amount. Sellers love this.
- Get the pre-approval for the specific offer amount. If you're offering $950K but your letter says $1.2M, sellers see unnecessary leverage. Many lenders will issue property-specific letters on request.
- Use a local lender. Listing agents often call the lender to verify. A San Diego-based loan officer who answers their cell strengthens the offer materially.
- Match terms to the listing. Offering cash-equivalent terms (short contingency windows, fast close, larger earnest money) pairs well with a strong pre-approval.
Common Pre-Approval Mistakes
- Applying only at your current bank. Convenience costs money. Always shop.
- Submitting incomplete documentation. "All pages" means every page of every bank statement, even blank ones.
- Confusing loan officer pricing with program pricing. Every loan officer can price a file up or down within their company's allowed range. Negotiate.
- Waiting too long to apply. Pre-approval takes 1-3 days. Don't do it the day before a weekend offer.
- Assuming pre-approval = final approval. The lender still needs to approve the specific property (appraisal, title, insurance) and re-verify you at close.
Next Steps
- Pull all three credit reports and dispute any errors
- Gather the document checklist above
- Request pre-approval from 2-3 lenders within the same 14-day window
- Compare Loan Estimates side-by-side (APR, fees, rate lock terms)
- Lock in your chosen lender and start shopping with confidence