Refinancing comes down to one number.

Calculate your break-even month: total closing costs divided by monthly savings. If closing costs are $7,000 and you save $250 a month, you break even at month 28. Stay past that and you're ahead; move before it and you lost money.

The rule of thumb is that a 0.50% to 1% rate reduction usually makes a refinance worth running — but on large California balances even a smaller drop can pencil, because the same rate change produces bigger dollar savings.

Almost certainly not for rate purposes — you'd reprice your entire balance to give up a rate you can't get back. If you need cash, a HELOC leaves that first mortgage untouched and is usually far cheaper overall. The only common exception is escaping an FHA loan's permanent mortgage insurance, and even then the math needs running carefully.

Typically 2% to 5% of the loan amount, covering lender fees, title, escrow, appraisal, and prepaid items. On large California balances that's a significant number, which is exactly why the break-even calculation matters more here than in lower-cost states.

No-closing-cost options exist, but the costs don't vanish — they're either financed into your balance or paid for with a higher rate. That can still be the right choice if you might move soon; just make sure the trade is shown to you explicitly.

It does if you refinance into a new 30-year term, and this is the most common way a refinance quietly costs money. If you're six years into a 30-year loan and refinance back to 30, your payment drops partly because you've stretched the remaining balance over 30 years again — lifetime interest can rise even at a lower rate.

Ask to see the comparison against your remaining term, and consider a 20- or 25-year term to capture the rate improvement without restarting the clock.

A rate-and-term refinance replaces your loan with a better rate or term and takes no cash out — which earns the best available pricing. A cash-out refinance borrows more than you owe and hands you the difference, generally up to 80% of your home's value, at a rate modestly above rate-and-term pricing.

It varies by program. Rate-and-term refinances can often work at higher loan-to-value ratios; cash-out is generally capped near 80% of value. FHA Streamline and VA IRRRL have no equity requirement at all in most cases, because they typically skip the appraisal entirely — which is precisely what makes them valuable to homeowners with limited equity.

Yes, but check whether you need to. On a conventional loan, once you reach 20% equity — and California appreciation often gets you there — you can request cancellation from your servicer without refinancing at all. That's a written request and possibly an appraisal, versus thousands in closing costs.

On an FHA loan with less than 10% down, the premium never cancels, so a conventional refinance is genuinely the only route out.

No. Under Proposition 13, your assessed value and tax basis follow acquisition, not refinancing — replacing your mortgage leaves your property tax bill alone. New construction is different: an ADU or major addition built with cash-out proceeds adds assessed value for the improvement, while your original basis stays intact.

The usual obstacles are insufficient equity, a credit score below program minimums, debt-to-income above guidelines, recent missed mortgage payments, or unstable income. The one people don't anticipate is the appraisal — if your home doesn't appraise high enough to support the new loan, the file stops there regardless of everything else. It's worth a realistic value conversation before you pay for one.

Typically three to five weeks, driven mostly by appraisal turnaround and document completeness. FHA Streamline and VA IRRRL refinances often close in two to three weeks because they skip the appraisal and most income verification. On a primary residence, add three business days after signing for the federal rescission period before funds disburse.

Yes — don't open new credit accounts, finance large purchases, miss any payments, or change jobs while your file is in process. Lenders re-check credit and employment before closing, and any of these can delay or derail approval at the last minute. Sit tight until you've funded.

Yes, though each refinance carries its own closing costs and its own break-even period, and most programs require six to twelve months of seasoning between them. Serial refinancing is a common way to lose money quietly — each one resets the clock and adds costs. Refinance when the math clearly works, not every time rates tick down.