Home financing in San Mateo County.
County-by-county financing guides. No paperwork. No social. No ID.
4 institutions are headquartered inside the San Mateo County line, and 4 more keep a branch here. Below, we say which is which.
Not this lane? Business FinancingPersonal Financing
The doors in San Mateo County.
The CDFIs, credit unions, and microlenders that actually say yes — county by county, in two languages. We are not a lender. Nobody paid to be listed. And where a county has no good doors, we say so.
- 8
- DOORS HERE
- 4
- BASED HERE
- 49
- CA COUNTIES WITH DOORS
- Lane
- Home Financing
- People
- 764Kresidents of San Mateo County
- Elsewhere in CA
- Los Angeles County →66 doors — the biggest list of any other county in California
- State
- California →49 of 58 counties hold a door in this lane
Certified by the U.S. Treasury to lend where a bank will not. Nonprofit, patient, and used to a file that is not clean.
Financial Partners Credit Union · Oportun, Inc.Owned by their members, not by shareholders. They look at your whole story rather than a score, and that is the difference when a bank says no.
Communityamerica Credit Union · Financial Partners Credit Union- Oportun, Inc.Community lending · Business capital
- Pacific Community FundCommunity lending · Business capital
- Jones Methodist Church Credit UnionMinority depositoryPersonal
- National Asian American CoalitionBusiness capital
Based elsewhere, with a member-facing office inside the San Mateo County line. You can walk in.
- Communityamerica Credit UnionPersonal · Home · Business capital
- Financial Partners Credit UnionCDFI-certifiedPersonal · Home · Business capital
- Operating Engineers Local Union #3 Credit UnionPersonal · Home · Business capital
- San Francisco Credit UnionMinority depositoryPersonal · Home · Business capital
- Mission Asset FundAccepts ITIN
Zero-interest lending circles and credit building. SSN or ITIN accepted. Works through nonprofit partners across the country.
Personal - Accion Opportunity FundAccepts ITIN
Nonprofit small-business lender. Accepts ITIN in place of SSN. Serves most states, in English and Spanish.
Business capital - Grameen AmericaAccepts ITIN
Microloans for women entrepreneurs. Requires photo ID and proof of address — no SSN requirement. Branches in major metro areas.
Business capital
3 of the 8 doors inside the county line are CDFI-certified.
The U.S. Treasury certifies them to lend to the people banks pass over. It is a loan, not a favour.
How to read this list.
We do not ask for your name, your email, or your number. Nothing on this page changes based on who you are.
A door is headquartered here when its head office sits inside the county line. The rest are based elsewhere and keep a branch you can walk into. We list both, and we label which is which.
Every institution on this page comes from public federal data — the CDFI Fund certified list (Aug 2026), NCUA credit union data (Mar 2026), and the SBA microloan intermediary list (Sep 2026) — plus a short national tier we verified by hand. We refresh each list as its agency publishes. No listing is paid.
San Mateo County is one of the hardest places in the country to buy a house, and pretending otherwise would waste your time. But people do buy here — usually by combining things: two incomes plus a co-borrower, a modest condo instead of a house, a duplex where the second unit helps carry the note, or a permitted in-law unit added later. This guide explains how home financing actually works on the Peninsula, what lenders want to see from self-employed and ITIN borrowers, which institutions are genuinely here, and which offers to walk away from.
It's a process, not a rejection.
A mortgage is a long loan secured by the house itself. The pieces that decide whether you can get one are your down payment, your documented income, your credit history, and the monthly debts you already carry.
The shapes worth knowing:
- A conventional loan follows the rules of the big secondary-market buyers. In high-cost counties like this one the limit is set higher than in most of the country, which matters because it keeps ordinary Peninsula prices inside ordinary loan programs.
- A jumbo loan is anything above that limit. It usually asks for a larger down payment, stronger reserves, and cleaner documentation.
- An FHA loan is a government-insured loan made by a regular lender. It allows a smaller down payment and more forgiving credit, in exchange for mortgage insurance.
- A VA loan is for veterans and service members, with no down payment requirement in most cases.
- An ITIN mortgage is a portfolio loan the lender keeps on its own books, made to a borrower who files taxes with an ITIN rather than a Social Security number. They exist, they typically ask for a larger down payment, and you have to ask institution by institution.
- A renovation or construction loan finances the work along with the purchase, which is how many Peninsula buyers handle a tired house or add a second unit.
Now the local reality. Prices here are set by the same employers that provide the jobs — the research and technology corridor, the airport, the hospitals.
Inventory is old, small, and expensive, and much of it needs work.
That pushes ordinary buyers toward three strategies: buying a condo or townhouse as a first step; buying with family and putting more than two names on the loan; or buying a two-unit building, living in one side, and letting the rent from the other side help qualify you. Lenders do count that projected rent, which is the single most useful fact in this guide.
A fourth strategy has become common: buy what you can afford, then add a permitted accessory dwelling unit — an in-law unit — later. State law now requires cities to allow them, and both renovation loans and equity lines are used to pay for them.
Forget what the banks say.
Lenders test four things: credit, income, assets, and the property itself. What varies is how they read income that does not arrive as a salary.
- 01**Self-employed and 1099 earners
** Contractors, landscapers, house cleaners, drivers, gardeners, and small restaurant owners are read from tax returns — usually two years — and from business bank statements. The write-offs that lower your taxes also lower the income a lender will count. Talk to a loan officer before your next return is filed, not after.
- 02**Two or three jobs
** Very normal here, and lenders can count all of it if there is a documented history. Keep the pay records.
- 03**Co-borrowers
** Adult siblings, parents, and adult children buying together is routine on the Peninsula. Everyone on the loan is fully responsible for it, so put the household agreement in writing even when it feels unnecessary.
- 04**Gift funds
** Down payment help from family is allowed on most programs, but it must be documented with a letter and a paper trail. Cash handed over at the last minute creates problems.
- 05**ITIN filers
** You can buy a home while filing taxes with an ITIN. Expect a larger down payment, expect to ask several institutions, and expect a real answer only from a human being — not from a website.
- 06**Mixed-status households
** If one spouse has a Social Security number and one has an ITIN, you have a choice about whose name goes on the loan. Ask what each version does to the amount you qualify for, and remember that only the people on the loan build credit from it.
- MISSING ONE?Ask Iris which one you're missing.ASK A QUESTION ↓
Get your papers in order.
Mortgage paperwork is heavier than any other kind of borrowing. Put this folder together before you look at houses:
- Government photo ID, and your ITIN or Social Security number
- Two years of tax returns, with all schedules — plus business returns if you file them
- W-2s and 1099s for the same two years
- Recent pay records, or a profit-and-loss summary if you are self-employed
- Two to three months of statements for every bank account you will use
- Proof of the down payment, and a gift letter if part of it came from family
- Rent payment history — twelve months of cancelled checks or transfers is real credit history when your file is thin
- A list of debts: car notes, credit cards, personal loans, tool financing
- Letters of explanation for any large or unusual deposit
If you are buying a two-unit building, add the current leases and rent records for the other unit. If you are planning renovation or an in-law unit, add contractor bids — a lender financing the work needs to see what the work is.
A warning about one common shortcut: some lenders offer "bank statement" programs for self-employed buyers that skip tax returns. They are legitimate products, but they cost more. Ask for both quotes — the bank-statement version and the tax-return version — and decide with the numbers in front of you.
The doors worth knowing.
Named honestly, based-in-county first. Notice what is missing: no large mission-based housing lender is headquartered inside this county, so the work of stitching a deal together usually falls to you and to a free housing counselor.
ALL 8 DOORS, BY NAME AND BY TOWN- 8
- DOORS HERE
- 123
- ACROSS CA
Based in Downey, California. A credit union — owned by its members rather than by shareholders, which is exactly what changes the conversation after a bank has said no. It is CDFI-certified.
BEST FORA personal loan, or building a credit file from nothing, and buying, repairing or refinancing a home.Based in Lenexa, Kansas. A member-owned credit union, which means the people deciding on your file answer to depositors in the same towns you work in.
BEST FORBuying, repairing or refinancing a home, and working capital, equipment and payroll for a small business.Based in Livermore, California. A credit union: no shareholders to satisfy, and a habit of reading a whole story rather than a single score.
BEST FORWorking capital, equipment and payroll for a small business, and a personal loan, or building a credit file from nothing.Based in San Francisco, California. A credit union — owned by its members rather than by shareholders, which is exactly what changes the conversation after a bank has said no. It is a minority depository.
BEST FORA personal loan, or building a credit file from nothing, and buying, repairing or refinancing a home.
Don't fall into these traps.
High-value homes attract sophisticated scams. Some of these are aimed squarely at immigrant families.
In much of Latin America a notary is a trained legal professional. In California a notary public is not a lawyer and cannot give legal or immigration advice. Anyone charging you for legal help under that title is misrepresenting what they are.
You make payments for years, the seller keeps the deed, and one late payment can cost you everything you put in. If you cannot get a normal purchase with a recorded deed in your name, the answer is usually to wait and prepare, not to sign this.
If you fall behind, a company may offer to "hold" your title until you recover. People lose their homes this way. Call a HUD-approved counselor instead; that help is free.
Repeated refinances that pull cash out and pile on fees. In a county where equity gets large, this is a real industry. Count the fees every time.
Someone emails you new wiring instructions in the last days before closing. Always call your escrow officer at a number you already had to confirm wiring details, every single time.
Trust in a community is a good thing, and it is also a tool people exploit. Verify the license anyway.
Approval is not advice. Your roof, your property tax bill, your insurance, and a slow season all come out of the same pocket. Leave room.
Everything below is set by California, and it reads the same in every county in it. The 8 marks above are this county's own doors — who opens one is decided by them, not by the state.
The rules where you are.
Property taxes here are based on what you pay for the house, and they rise only slowly afterward. Practically, that means your tax bill is set the day you close, and it is often much higher than the seller's — never budget from the current owner's tax figure.
Earthquake damage is not covered by a standard homeowner's policy. Coverage is sold separately, and lenders do not require it, so it is your decision to make deliberately rather than by accident.
Some cities in this county charge their own transfer tax when a property changes hands, split by local custom. Ask early who pays what; it is real money at closing.
California law now requires cities to permit accessory dwelling units on most residential lots, with limits on what a city can demand. If your plan is to add a unit for family or for rent, that plan is legally on firmer ground than it was a few years ago. Financing it is still the hard part.
If you buy a two- to four-unit building with a tenant already in place, you are a landlord the moment you close, and state tenant-protection rules apply to you. Learn them before, not after.
Mortgage brokers and loan officers must be licensed. You can look up any individual by name in the national licensing registry. Anyone who will not give you their license number is not someone you should be talking to about your house.
The short version.
- 01
Buying a home in San Mateo County is hard, and it is not impossible. What works here is stacking advantages: a co-borrower, a two-unit building whose rent helps you qualify, a condo as a first step, a renovation loan for a house nobody else wanted, an added in-law unit later.
- 02
Start with the file, not the listings. Deposit every dollar you earn. File honest returns for two full years. Pay your rent in a traceable way and keep the records. If your credit file is thin, build it deliberately — a lending circle at an ITIN-friendly nonprofit is the cheapest way to do it.
- 03
Then get free help before paid help: a HUD-approved housing counselor will read your whole picture and cost you nothing. Ask every lender two questions in the first conversation — do you lend to ITIN filers, and can I see the full written estimate of costs. Compare at least two estimates side by side.
- 04
No institution is headquartered here to make that easy for you. Credit unions with branches in the county, two local CDFIs, and the state housing finance agency's programs through participating lenders are the practical path.
Same county, another question.
Business FinancingLoans, lines of credit, and capital for small businesses and contractorsSEE IT IN SAN MATEO COUNTY →
Personal FinancingPersonal loans, credit building, and ITIN-friendly financing optionsSEE IT IN SAN MATEO COUNTY →49CA COUNTIES WITH DOORSThe whole stateEvery county in California, in this same lane.123 institutions fund homes and repairs inside California county lines.OPEN THE STATE →Still don't see your situation?
Ask Iris. She'll explain it the way it should have been explained the first time.