Current refinance guidelines, updated from one source.
The block below holds the figures that frame a refinance file, read from Lendmire’s guideline sources and refreshed on this page when the agencies, HUD, VA, or the wholesale overlays change: the conventional leverage and the mortgage-insurance line, the streamline rules for an existing FHA loan, the IRRRL fee and seasoning for an existing VA loan, and the credit and ratio figures. The ladder underneath lists every route.
One-unit principal residence; mortgage insurance above 80%
The conventional rate-and-term refinance reaches 95% loan-to-value on the home the borrower lives in, with 97% only on the first-time-buyer programs for an agency-owned loan. It rolls in the old balance, the costs, and a purchase-money second; paying a non-purchase-money second or a credit line through it makes it a cash-out. Mortgage insurance begins above 80%; the owner may cancel it at 80% of the original value, and it falls away by itself at 78%.
An existing FHA loan, refinanced with a net tangible benefit and a limited credit review
An existing FHA-insured loan can be refinanced through the streamline with no appraisal, a limited credit review, and a net tangible benefit as HUD defines it; the previous loan’s seasoning and payment history still apply, and FHA mortgage insurance continues on the new loan. The FHA rate-and-term with an appraisal reaches 97.75% on a principal residence occupied for the previous year.
An existing VA loan, no VA appraisal; seasoning of 210 days and six payments
For a San Mateo veteran with a VA loan, the IRRRL replaces it at a 0.5% funding fee, financed or waived for an exempt veteran, with no VA appraisal and no cash returned; the loan being replaced must be seasoned 210 days and six payments, and the new loan must pass VA’s net tangible benefit test. A home the veteran once occupied and now rents is still eligible on the wholesale program.
DTI to 50%; jumbo from 660 on its lanes
The credit floor behind these pages is 620 on the wholesale conventional programs, and the automated finding sets the ratio ceiling at 50% with compensating strength in the file. Above the conforming limit the jumbo lanes take over, from a 660 score on the headline lane, to 90% loan-to-value, with loans to $5,000,000 and a ratio ceiling of 50% on the fixed lanes.
| Program | Loan being replaced / occupancy | Maximum LTV | Conditions |
|---|---|---|---|
| Conventional rate-and-term (Fannie Mae / Freddie Mac) | One-unit principal residence | 95% | limited cash-out: the old loan, the closing costs and a purchase-money second roll in, incidental cash only; 97% where the existing loan is agency-owned and the first-time-buyer program allows; mortgage insurance above 80% |
| FHA streamline | Existing FHA-insured loan | No LTV test | appraisal not required; net tangible benefit; limited credit review; the previous loan’s seasoning and payment history apply; FHA mortgage insurance continues |
| FHA rate-and-term | Principal residence (owner-occupied the previous twelve months) | 97.75% | with an appraisal and full credit review; FHA mortgage insurance on the new loan |
| VA IRRRL | Existing VA loan; a home the veteran previously occupied | No LTV test | 0.5% funding fee (financeable; exempt veterans pay none); no VA appraisal; net tangible benefit; seasoning the later of 210 days and six payments |
| Jumbo rate-and-term (wholesale lanes) | Above the conforming limit | 90% | 660+ score on the headline lane, loans to $5,000,000, DTI to 50% on the fixed lanes; reserves and the appraisal count per the lane |
A refinance that returns cash is a cash-out refinance and is covered by the conventional, FHA, VA and jumbo cash-out programs; a line of credit that leaves the first mortgage in place is the HELOC program. Each carries its own leverage and its own rules.
Current refinance snapshot · updated October 3, 2026 · a refinance replaces the whole loan and restarts the term unless a shorter term is chosen · closing costs are paid from the loan or at closing and are recovered only through the monthly saving · conforming limits apply by county and are confirmed by a Lendmire loan officer · Lendmire is a broker licensed in sixteen states for consumer mortgages, never the lender.
For informational purposes only. This is not a commitment to lend or extend credit, an offer, or a quote. Program parameters shown are Fannie Mae, Freddie Mac, HUD, and VA guidelines and wholesale lender overlays as of the date shown, are subject to change without notice, and apply only after full underwriting. Rates shown in the calculator are published survey averages, not quotes. Lendmire LLC, NMLS #2371349, is a mortgage broker licensed in sixteen states for consumer mortgages and is not the lender. Not legal or tax advice.
What a rate-and-term refinance is — and how the file is qualified.
A rate-and-term refinance is simple to describe and particular in its rules. The four cards below cover what the new loan is and what it may pay off, which of the four programs applies to the loan being replaced, how the benefit test and the break-even decide whether the refinance pays, and what to do when the real goal is cash rather than terms.
For the program overview, see Lendmire’s refinance program, or the statewide guide at Refinance in California; when the goal is cash, see the cash-out refinance program.
One new loan replaces the old one
The new loan is a complete first mortgage. At closing, it pays off the existing first mortgage. Closing costs and prepaid items are financed into the new loan. On a conventional file, it also pays off a purchase-money second lien taken when the home was bought. The balance is otherwise unchanged, and only incidental cash comes back. The old payment ends; one new payment, on the new term and the new rate, replaces it.
Four programs, one question: which applies
Conventional is the general route: any first mortgage on a home the borrower lives in, tested against the value and the credit profile, with mortgage insurance above the published line and none below it. The FHA streamline and the VA IRRRL are reserved for loans already insured or backed by those agencies and trade an appraisal and a full review for a benefit test. Jumbo applies above the conforming limit.
The benefit test and the break-even
The arithmetic is plain: closing costs divided by the monthly saving gives the months to break even, and the interest over the new term set against the interest remaining on the old loan says what the term reset costs. HUD and VA write a version of this test into the streamline and the IRRRL; the conventional refinance leaves it to the homeowner, which is why Lendmire runs it before anything is ordered.
When the goal is cash, not terms
Paying off a line of credit or a second lien that was not part of the purchase through the new loan makes the file a cash-out under the agency rules even when no cash reaches the borrower, so an owner with a HELOC behind the first mortgage should read the cash-out guide first. The rate-and-term refinance pays off the first mortgage, the costs, and a purchase-money second, and stops there.
The calculator asks for what only you know, the balance, the current rate, the years left, and the closing costs you have been quoted or expect, and takes the rest from the programs. What comes back is the new payment, the monthly change against the current payment, the months to break even, and the interest over the new term beside what remains on the old loan, for a San Mateo home.
Where San Mateo’s mortgages were written — and what a refinance changes.
Scale, not quotation: the median value says what a typical San Mateo balance sits under, the ownership rate says how many mortgages the market holds, and the median income sizes the ratio a typical payment leaves. The program figures above do not move with any of them.
Market context only. Where values have risen since the mortgage was written, the refinance often sheds mortgage insurance on its own; where they have not, the leverage cap and the premium line do more of the deciding. The rules are constant; the cushion is local.
Data sources: U.S. Census Bureau — ACS 5-Year (2024) housing and population estimates, including tenure, home values, gross rents, and household income.
Distinct San Mateo neighborhoods, distinct refinance questions.
Neighborhood by neighborhood, the cards below describe San Mateo’s housing stock, the loans typically written on it, and the refinance question that comes up most in each.
High-value homes near the limit
A high-value San Mateo home refinances on the agency route when the new balance fits under the limit and on the jumbo lanes when it does not. The rate-and-term arithmetic is the same; the documentation, the reserves, and the appraisal count change with the lane. An owner near the line sometimes pays the costs at closing to stay conforming. About 50% of San Mateo’s households rent — roughly 19,985 renter households on the latest Census estimate.
Two- to four-unit homes
Small multi-unit homes refinance on every route the existing loan allows, with their own cap and with the rents helping the ratio within the rules. The FHA streamline and the VA IRRRL apply to the government loan on the property exactly as on a house; the conventional route adds the rent schedule and the occupancy’s leverage. Roughly 19,910 San Mateo households own their homes on the latest Census estimate — 50% of all households, the pool a refinance draws on.
Condominiums and townhomes
Much of San Mateo’s stock is attached housing, and a conventional refinance of a condominium adds the agencies’ project review to the file: the association’s budget, insurance, and investor share are checked before the appraised value is applied to the loan-to-value cap. Established buildings usually pass; newer or investor-heavy ones draw questions. A streamline or an IRRRL on an existing government loan skips the review. Median household income in San Mateo sits near $153,504 on the latest Census estimate.
Long-held close-in homes
Older San Mateo neighborhoods hold mortgages written a decade or more ago on homes worth far more today, and the refinance question there is rarely the cap: it is the term. With the balance small against the value, a shorter term often costs little more each month than the old payment and saves years of interest, and mortgage insurance is not in the picture. San Mateo is home to about 103K people and sits within the San Francisco-Oakland-Fremont, CA area.
Newer infill and recent purchases
Recent purchases refinance for terms rather than for equity. The conventional cap in the snapshot is generous enough for most San Mateo files, and the question is whether the new loan lands above or below the insurance line; rolling the costs in can push it over, paying them at closing can keep it under, and the review places it before the appraisal. The median owner-occupied home value in San Mateo runs near $1,618,700 on the latest Census estimate.
Rentals held for years
People refinance an investment property for the same reasons as a home: a lower payment, a shorter term, or a fixed rate. The same arithmetic applies. The loan officer confirms the cap for the occupancy type. The file funds without a rescission period, and the lease and the rent schedule join the documents. On a San Mateo home at the median value, a conventional rate-and-term refinance at the leverage cap allows a new loan up to $1,538,000 — the existing loan, the closing costs, and a purchase-money second lien are what it may pay off.
The street changes the numbers, not the test. A San Mateo refinance anywhere in the city is sized on its balance and costs, tested against its program’s cap, and judged on its break-even.
Four reasons San Mateo homeowners rewrite the mortgage.
The purpose of a refinance decides its shape. The four cards below take the common San Mateo purposes one at a time: what the homeowner is after, which program delivers it, and the figure in the file that decides whether it works.
Shorten the term
Owners who have paid a thirty-year loan for a decade often find a shorter term costs little more each month and far less in interest, because the old loan is still front-loaded with interest. The San Mateo file is qualified on the new payment, and the break-even is quick when the costs are modest and the term is cut substantially.
Get rid of mortgage insurance
An FHA borrower whose home has gained value can refinance into a conventional loan at or below the no-insurance line and leave the premium behind for good; a conventional borrower paying private mortgage insurance can do the same, or can ask the servicer to cancel it at the published line without refinancing at all. The appraisal sets the value, and the value decides which route is open.
Lower the monthly payment
The most common reason, and the one that needs the most care: a lower rate lowers the payment, and so does a longer term, and only the first of those saves money. A San Mateo owner comparing payments should compare the interest over the new term with the interest remaining on the old loan, which the calculator does, and should count the closing costs against the saving before deciding.
Fold in a purchase-money second lien
A second lien taken when the home was bought, to avoid mortgage insurance or to bridge the down payment, can be paid off inside a conventional rate-and-term refinance, leaving one loan and one payment. A second lien opened later, or a line of credit drawn after the purchase, cannot: paying either through the new loan makes it a cash-out under the agency rules.
Estimate the new payment and the break-even on a San Mateo home before requesting a quote.
Four programs, one calculator. Conventional applies the leverage cap and the mortgage-insurance line; the FHA streamline and the VA IRRRL skip the value test, and the IRRRL adds its fee to the loan; jumbo applies the lane’s cap. Enter your San Mateo figures and read the payment, the change, the break-even, and the interest comparison before requesting written terms.
San Mateo refinance savings and break-even estimate
The defaults describe a typical San Mateo home, not yours; enter the balance, the current rate, the years remaining, and the costs you expect.
Editable benchmark: 7.28% as of October 1, 2026 · Freddie Mac 30-year average via FRED®. A conventional market reference, not a refinance quote.
Illustrative starting assumptions: a $1,500,000 home value near San Mateo’s median owner-occupied value, a $1,050,000 current balance, a current rate and remaining term you enter, closing costs seeded at $21,000 as an editable placeholder (not a fee quote), a thirty-year term at the current Freddie Mac benchmark, and property taxes and insurance estimated for California (U.S. Census Bureau). Every field is editable.
Illustrative estimate only — not a Loan Estimate, approval, quote, or commitment to lend. The new rate field carries the weekly Freddie Mac thirty-year conventional benchmark, a market reference and not a refinance quote; a refinance is priced by the lender at lock, and the current rate, the remaining term and the closing costs are figures you enter. The current payment is estimated from the balance, the current rate and the remaining term; the break-even divides the closing costs by the monthly saving and ignores the interest effect of a longer term. On the VA IRRRL the funding fee is added to the loan unless the veteran is exempt. Taxes and insurance are editable estimates. Licensed in sixteen states for consumer mortgages; Lendmire is a broker, never the lender.
Same home, four ways to refinance it.
The same home can be refinanced four ways, and the routes differ more than the labels suggest: a conventional rate-and-term with an appraisal and the leverage cap, an FHA streamline or a VA IRRRL on an existing government loan with no appraisal and a benefit test, or the jumbo lanes above the conforming limit. The cards below put them side by side for a San Mateo home.
Conventional, streamline, or jumbo.
The conventional rate-and-term refinance replaces whatever first mortgage is on the home with an agency loan: value tested by appraisal, leverage capped as in the snapshot, mortgage insurance ending at the line, the old loan and the costs inside the new balance. It asks the most of the file and reaches the most homeowners, including FHA borrowers ready to shed the premium. See the conventional loan program.
For a San Mateo owner whose loan is already FHA or VA, the streamline or the IRRRL is the lightest file on this page: no appraisal in most cases, a limited review, a benefit the new loan must deliver, and the agency’s own seasoning and payment-history rules on the loan being replaced. The FHA premium stays; the VA fee is financed or waived. Neither reaches a borrower whose loan is conventional. See the FHA and VA programs.
Above the conforming limit the agencies step aside and the wholesale jumbo lanes take over: a higher score floor, leverage set by the lane, reserves measured in months of payments, and a second appraisal on the largest loans. The rate-and-term jumbo refinance fits a San Mateo owner whose balance the conforming limit cannot hold, on a fixed, adjustable, or interest-only structure. See the jumbo loan program.
A San Mateo owner with a conventional loan refinances conventionally. An FHA borrower refinances conventionally to shed the premium and through the streamline to keep the paperwork light. A VA borrower uses the IRRRL. An owner above the conforming limit uses the jumbo lanes. An owner who wants cash is on the wrong page and should read the cash-out guides.
What to prepare for a San Mateo scenario review.
Most of what a refinance needs is already in a San Mateo homeowner’s files: the mortgage statement, the pay stubs, the insurance declaration, the tax bill. This list says what to gather and why each item matters to the file.
This is a general preparation guide, not a universal checklist. The selected lender may request additional information based on the transaction, the property, the automated finding, and the income picture. Nothing here is legal or tax advice.
Local details that can change the loan.
The program is simple to state and particular in its exceptions. Here are the local and file-level details that most often change a San Mateo refinance between application and closing.
Use these checks to keep the San Mateo file clean and fundable.
Before the appraisal is ordered: run the break-even on realistic costs, compare the interest over the new term with what remains on the old loan, and confirm which program the existing loan points to for the San Mateo home.
- Run the break-even: Compare the break-even with how long you expect to keep the loan.
- Weigh the reset: A term matched to the years remaining keeps the saving without the reset.
- Plan for the appraisal: Plan on a cautious value and let the appraisal confirm it.
The costs are recovered only through the saving
The break-even is the first number a refinance review produces, and the one most homeowners skip. Costs rolled into the loan raise the balance and the payment slightly, which lengthens the break-even; costs paid at closing shorten it but require cash. The San Mateo calculator above shows the months either way on the figures you enter.
The term starts over unless you choose a shorter one
Resetting the term is the quiet cost of most refinances. The payment falls because the balance is spread across more years, and the interest paid over the life of the loan rises for the same reason. The fix is a shorter new term, which raises the payment back toward the old one and keeps the interest saving; the review runs both versions for the San Mateo owner.
The appraisal decides the conventional and jumbo routes
A conventional or jumbo refinance is sized on an appraisal, and the value it reports sets the loan-to-value, the cap, and the insurance line at once. A value below the plan can move a San Mateo file over the insurance line or past the cap, or push it toward a streamline instead. The streamline and the IRRRL skip the appraisal, which is part of their appeal.
Above the conforming limit the jumbo lanes apply
A San Mateo balance above the county’s conforming limit, or one that closing costs push over it, leaves the agency programs for the wholesale jumbo lanes: a higher score floor, leverage set by the lane, reserves measured in months of payments after closing, and a second appraisal on the largest loans. The limit changes yearly and is confirmed by a loan officer rather than printed here.
Condominiums add the project review on the conventional and jumbo routes
The unit is appraised and the project is reviewed, and either can slow a conventional condominium refinance. The dues enter the ratio, the master insurance must meet the agencies’ standard, and a project that fails the review moves the file to a portfolio program on other terms. A streamline or an IRRRL on an existing government loan skips the review.
From a San Mateo scenario review to a new first payment.
A refinance runs in a fixed order: a scenario review that sizes the loan and runs the break-even; an application and the automated finding, or the limited review of a streamline; the appraisal where one applies and underwriting; and a closing followed, on a principal residence, by the rescission period and funding. Here is each step for a San Mateo owner.
Scenario review
Everything begins with the arithmetic on the owner’s own figures. The program, the term, the costs, the break-even, and the interest comparison are run before an application exists, and the loan is placed against the cap and the insurance line on a cautious value, so a San Mateo owner decides with the numbers in hand and nothing has been spent.
Application and automated finding
On a conventional or jumbo file the automated finding decides what the underwriter will see: income documents, assets, the appraisal type, and the ratio ceiling. On a streamline or an IRRRL the agency’s limited review applies. The San Mateo owner gathers what the finding asks for and nothing more.
Appraisal and underwriting
The appraiser fixes the value and the underwriter confirms the rest: credit, income, assets, the second lien’s origin, the project on a condominium, the seasoning on a streamline or an IRRRL. A value under the plan resizes the loan or moves it across the insurance line; the review was run with room beneath it for exactly that reason.
Closing, rescission, and funding
At closing the new loan is signed, the payoff is ordered, and after the rescission period on a home the borrower lives in, the old loan is retired and the new one begins. Second homes and investment property fund without the wait. The new servicer sends the first statement, and any saving the review showed starts with it.
A brokerage that runs the break-even honestly.
Why San Mateo owners bring a refinance to a brokerage: the programs are compared side by side, conventional, the streamlines, and jumbo, on the same numbers; the file is placed with the wholesale program that fits it rather than the only one a lender sells; and the answer, including the answer not to refinance, is given in writing first.
The break-even, run before anything else
Every Lendmire refinance review begins with the costs against the saving and the interest over the new term against what remains on the old loan. A San Mateo owner whose numbers do not work hears so in the first conversation, in writing, and spends nothing finding out.
Shopped across wholesale programs
The conventional route, the streamlines, and the jumbo lanes are compared side by side on the owner’s balance, value, and goal, and the program that delivers the saving at the lowest cost is the one the file goes to. The lender is never the only option because the brokerage is not the lender.
Terms in writing, before any fee
An appraisal fee on a refinance that cannot pay for itself is money wasted, so the written terms come first and the appraisal second. The owner sees the new loan, the payment, the saving, and the break-even before any fee is charged.
Trusted by homeowners & families alike.
San Mateo refinance FAQs
Plain answers to the questions San Mateo homeowners ask most about refinancing, in the order they usually ask them.
What is a rate-and-term refinance, and how is it different from a cash-out?
It is the refinance that changes the loan and leaves the equity alone. The balance, the costs, and a purchase-money second become one new loan on a new term; nothing comes back as cash. If a San Mateo owner wants money at closing, the cash-out programs are the right ones, and this page says so plainly rather than sizing the wrong loan.
When does refinancing actually make sense?
It makes sense for a reason you can name: a lower payment that recovers its costs, a shorter term that cuts the interest, an FHA premium that ends, an adjustable rate that becomes fixed, a name that comes off the note. It rarely makes sense for a payment that is only slightly lower, because the costs and the term reset eat the difference. The San Mateo review says which case you are in.
What does a refinance cost to close?
Every refinance has costs, and a refinance advertised without them has moved them into the rate or the balance. Lendmire states them in the written terms before the appraisal, and the calculator on this page treats your estimate of them honestly, recovered only through the saving and never assumed away.
Can I get rid of mortgage insurance by refinancing?
Refinancing is one of two ways. The other, for a conventional loan, is a cancellation request to the servicer at the published line, which costs nothing. For an FHA loan the refinance is the only way, and the new loan must be conventional and at or below the line, which an appraisal decides.
What is an FHA streamline, and who can use it?
It is FHA’s own refinance for FHA borrowers: lighter paperwork, no appraisal, a benefit test instead of a value test, and the premium carried forward. A San Mateo owner with an FHA loan who wants a lower payment or a fixed rate with the least friction is the candidate; an owner who wants out of the insurance is not.
How does a VA IRRRL work?
The IRRRL is VA’s rate-reduction refinance. It replaces an existing VA loan with a new VA loan at a lower rate, or it converts an adjustable rate to a fixed one. VA does not require an appraisal. The funding fee is the reduced figure in the snapshot and can be financed, and exempt veterans pay none. The loan being replaced must be seasoned for the period printed in the VA card of the snapshot higher on this page. That period is the later of a set number of days after its first payment date and a set number of monthly payments made. The new loan must deliver a net tangible benefit. Where the new loan amount does not exceed the payoff, the fees and costs must be recouped within VA’s window. The home may be a primary, second, or investment property the veteran once occupied.
Is the rate in the calculator what I would get?
It is a benchmark, deliberately: Lendmire does not print rates on these pages, because a rate that is not tied to a file is not a rate anyone will receive. The San Mateo owner tests scenarios against the benchmark and receives the actual terms in writing after the review.
What credit score do I need to refinance?
Meet the floor in the snapshot and a San Mateo conventional file can proceed; the finding, the ratio, the value, and the loan being replaced decide the rest. A jumbo file asks more. The streamlines ask less of the score and more of the payment history.
Why is there a waiting period after I sign?
A short cancellation window follows signing, and federal law requires it on a refinance of the home you occupy. The loan funds once the window has run, the payoff follows, and the new loan’s schedule starts from the funding date. Investment property and second home refinances fund without the wait.
Should I refinance into a fifteen-year loan or another thirty-year?
A shorter term raises the payment and cuts the interest over the life of the loan, often by a large amount, because the balance is repaid faster; a new thirty-year term lowers the payment and restarts the clock, which can raise the total interest even at a lower rate. The calculator on this page sets the interest over the new term beside what remains on the old loan for both choices. The right term is the one whose payment the San Mateo household can carry and whose interest total it accepts.
A San Mateo refinance sized to the balance, the costs, and the break-even.
Enter your San Mateo figures above, then ask for a review; the program, the cap, the insurance line, the benefit test, and the break-even are checked against the agencies’ rules and the wholesale overlays, and what comes back is a written set of terms, not an estimate, and a plain recommendation if the refinance does not pay.
This guide covers San Mateo — for the statewide guidelines, markets, and scenarios, see Refinance in California, part of Lendmire’s refinance program.
Nearby markets in California: Redwood City · South San Francisco · Hayward · San Leandro · Alameda · Daly City · Palo Alto · Oakland
Related programs: Cash-Out Refinance · Conventional Loans · HELOC