Jumbo Loan Guide for San Francisco Home Buyers

I'm Christopher Lee, San Francisco Realtor (DRE #02120811). Almost every purchase I close in this city uses a jumbo loan — because the median home price puts most buyers above the conforming limit on day one. And yet jumbo lending is the part of the process most buyers understand the least.

This guide is the conversation I have with every client before they pick a lender: what counts as jumbo here, how the pricing tiers actually work, which lenders are competitive on which loan sizes, and how to use jumbo guidelines to your advantage.

When you're ready to model real numbers, the Buying Power Calculator prices SF jumbo scenarios correctly. Then book a strategy call.

The three loan tiers in San Francisco

San Francisco County is a "high-cost area," so the loan limits are higher than national defaults. The exact dollar figures shift each year — what matters is understanding the tiers.

The counterintuitive thing: a true jumbo loan can sometimes price lower than a high-balance conforming loan in San Francisco, because portfolio banks compete hard for the wealthy borrowers writing those loans. Don't assume bigger = more expensive.

Why SF is different

Three things make SF jumbo lending its own world:

1. High-cost county designation. The conforming limit here is well above the national one, so "jumbo" starts at a much higher number than most buyers expect.
2. Sophisticated borrowers. Tech equity, founder exits, family-office capital. Portfolio lenders price aggressively to win these relationships.
3. Strong property values. Banks like SF collateral. A $2.5M loan on a Noe Valley single-family home is a lower-risk asset to a lender than the same loan on a tract home in a less liquid market.

The result: well-qualified SF buyers often get pricing that surprises them.

How jumbo pricing actually works

Every lender quote breaks down into:

• Note rate — the rate that sets your payment
• Points — upfront cost to buy down the rate
• APR — note rate + amortized fees, useful for cross-lender comparison but imperfect
• Lender credits — money the lender gives you toward closing costs in exchange for a slightly higher rate

Three buyers, same loan amount, same day, can get very different quotes based on:

Always ask for rate AND points together. A "low rate" with 2 points is not the same loan as a "higher rate" with zero points.

Five categories of jumbo lender in SF

Different lenders win different deal profiles. Match the lender to the loan.

1. National retail banks. Bank of America, Chase, Wells Fargo. Predictable pricing, broad product menu, slower closes. Strong on standard W-2 buyers.

2. Private banks / wealth-management lenders. Schwab Bank, Morgan Stanley Private Bank, JPMorgan Private Bank, Citi Private Client, First Republic's successors. Best for HNW buyers willing to bring or maintain assets at the bank. Pledged-asset programs let you avoid liquidating brokerage to fund down payment.

3. Local mortgage banks. Guaranteed Rate, CrossCountry, loanDepot's jumbo division, Cardinal Financial, plus regional players. Often the right answer for standard jumbos up to $2–2.5M. Faster than retail banks, more flexible than private banks.

4. Portfolio / community banks. First Foundation, Bank of Marin, Pacific Premier. Will hold your loan on their books — meaning they can underwrite to common sense rather than to rigid agency guidelines. Great for self-employed borrowers and unique properties.

5. Non-QM / asset-depletion lenders. For buyers whose income doesn't fit a box — bank-statement loans, asset-depletion loans, foreign-national loans. Higher rates, but they close deals nobody else will.

Down payment, reserves, and DTI

Jumbo guidelines are tighter than conforming but more flexible than most buyers expect.

Reserves = liquid assets remaining AFTER closing. Retirement accounts count at 60–70% of value at most lenders. Pledged-asset programs can effectively waive some reserve requirements.

Pledged-asset lending and securities-backed lines

This is the move I see sophisticated buyers use most often and the one most underused by everyone else.

How it works. Instead of liquidating $300K of brokerage to fund a down payment (and triggering capital gains), you pledge $300K of brokerage to the bank as additional collateral. The bank treats it like part of your down payment for LTV/risk purposes, but the assets stay invested. You keep the upside, you keep the tax basis, you keep dividends.

Who offers it. Schwab Bank (Pledged Asset Line), Morgan Stanley (Liquidity Access Line), Goldman Sachs, JPM Private Bank, Charles Schwab Mortgage. Different banks structure it differently.

The catch. A margin-call event in a market drawdown can force you to add collateral or pay down the loan. Don't pledge assets you can't afford to lose access to.

How to shop a jumbo loan in one week

Day 1 — pick 3 lenders, one from each of these buckets: a major bank, a local mortgage bank, and a private bank (if your asset profile fits).

Day 2 — request quotes on the same loan amount, term, points option (e.g., zero points), and lock period (e.g., 45 days) on the same morning. Send all three the same documents in the same email.

Day 3–4 — compare LE (Loan Estimate) docs line by line. Look at lender fees, third-party fees, and rate-vs-points tradeoffs.

Day 5 — choose. Tell the others. Don't try to play them off each other after they've already given their best quote — relationship matters and so does your reputation.

Day 6–10 — submit the full file. Push for fully underwritten approval.

Rate locks: float, lock, or float-down?

You will be offered three options. Here's how I think about them in SF:

• Float. Useful in a falling-rate environment, dangerous when rates are choppy. Don't float without a clear thesis.
• Lock. Standard 30/45/60-day locks. Lock at the moment you're in contract; don't lock before you have a property.
• Lock with float-down. Costs a small premium. Lets you re-lock if rates drop materially before closing. In a volatile rate environment, often worth it.

Refinancing your SF jumbo later

Most buyers refinance at least once. Two scenarios to plan for:

1. Rate-and-term refi. If rates drop 0.75%+ from your note rate, run the math. A standard SF jumbo refinance breaks even in 18–30 months.
2. Cash-out refi. Useful for renovation or to pull equity for a 1031-exchange-style investment. Cash-out jumbos price ~0.25–0.50% worse than rate-and-term.

If you bought with a portfolio lender, you may also be eligible for a portfolio modification — a rate cut without a full refinance — if that lender still wants your loan on their books.

Special situations

Buying with RSUs or bonus comp. Most jumbo lenders need 2 years of vesting history and will average it. Some private banks count unvested RSUs vesting in the next 36 months at face value. Read the RSU buying guide.

Self-employed. Plan for 2 years of tax returns, K-1s, and a complex add-backs conversation. See the self-employed buyer guide.

Condo with high HOA + concentration issues. Some SF condo buildings get flagged for owner-occupancy ratios, litigation, or single-entity ownership concentration. Jumbo lenders care about this — a building that worked for the last buyer may not work for yours.

Tenancy-in-Common (TIC). Conforming and most jumbos do not finance TICs. You'll need a TIC-specific fractional loan from a small set of local lenders (Sterling Bank, Bank of Marin historically). Read the Condo vs TIC vs SFH guide.

Costs to budget beyond the loan

Estimate your total cash to close in the Buying Power Calculator, then read the buyer closing costs guide.

Common jumbo mistakes I see

• Picking by rate alone. A 0.125% lower rate with a slow lender that misses the close date can cost you the home.
• Ignoring reserves. You qualify on DTI but get denied on reserve depth. Confirm reserve requirements at the application stage.
• Mixing employment changes with loan applications. Don't accept a new job mid-loan without telling your LO first.
• Maxing the loan. SF assessments and supplemental tax bills will land six months after close. Keep liquidity.
• Not asking about portfolio retention. A lender that keeps your loan can renegotiate terms later. A lender that immediately sells your loan cannot.

Next steps

1. Read the Mortgage Pre-Approval Guide.
2. Read the First-Time Buyer Guide.
3. Run scenarios in the Buying Power Calculator.
4. Schedule a consultation — bring your top two loan offers and I'll tell you which one I'd actually take.

The right jumbo lender for your file is rarely the one with the lowest advertised rate. Choosing well is worth more than half a point on rate over the life of your SF home.