Helping Your Adult Child Buy a Home in Santa Clara County: Gift, Co-Borrow, or Co-Sign?

You want your son or daughter to live close by. They want to stop renting. Then you both look at Santa Clara County prices, and the gap feels huge.

Many parents in the South Bay step in to help. I work with these families often, and the best outcomes share one trait: the family picks the right kind of help before they shop for a home. The wrong structure costs you credit, flexibility, and sometimes a tax headache.

Here are the three main ways to help, and how each one works.

Path 1: Gift the Down Payment

A gift is the simplest option. You give money. Your child buys the home. Your name never appears on the loan.

A true gift has no strings attached. The lender needs a signed gift letter stating the money does not need to be repaid. Lenders also want to see the paper trail, so expect to provide proof the donor had the funds and a record of the wire to escrow.

A few rules to know:

• Timing and routing matter. Hold the gift until closing, then send it directly to escrow. Do not hand the money to your child first. A wire from the donor straight to escrow keeps the paper trail short and avoids lender questions about where the funds came from.
• Family members are acceptable donors on most conventional and FHA loans. Check the rules on your specific loan program.
• Gift tax is a filing question, not usually a payment question. In 2026, you give up to $19,000 per recipient without filing a gift tax return. Gifts above this amount require a Form 709 filing, though most families still owe no tax because of the lifetime exemption. Talk with your CPA about your situation.

Best for: Parents with spare cash who want no ongoing role in the loan.

Path 2: Co-Borrow on the Loan

A co-borrower signs the loan with your child. Your income, assets, and debts count in the approval. This path helps when your child's income alone falls short.

There are two versions:

Non-occupant co-borrower. You sign the note but you do not live in the home. Fannie Mae allows this on purchases, and the loan system looks at every borrower's income, assets, and credit. FHA offers its most flexible terms when the non-occupant co-borrower is a family member, and the co-borrower signs both the note and the security instrument.

Occupant co-borrower. You live in the home with your child. This one is less common but works well for multi-generational households.

What you take on:

• You are fully liable for the loan. If your child misses a payment, the lender comes to you too.
• Your debts count against you. Your own mortgage, car loans, and cards enter the calculation, so your presence on the file is a plus only when your numbers are strong.
• The loan shows on your credit report. This affects your own borrowing power if you plan to buy, refinance, or downsize soon.
• Exit is a refinance. You come off the loan only when your child refinances into their own name and qualifies alone.

Best for: Parents with strong credit and low debt who want to bridge an income gap.

Path 3: Co-Sign Only

A cosigner backs the loan and sometimes holds no ownership. Banks use this term loosely, and the structure depends on the loan program. Many lenders treat a cosigner as a non-occupant co-borrower in practice. Ask your loan officer exactly how your name will appear on the note and on title before you agree to anything.

Best for: Rare cases. Most families land on Path 1 or Path 2.

Compare the Three Paths Side by Side

Santa Clara County Numbers to Know

The 2026 conforming loan limit in Santa Clara County is $1,249,125 for a one-unit home. The FHA limit is the same in our county. Many homes here sell above this number, so a jumbo loan is common. Jumbo lenders look hard at reserves and credit, and a gift or a strong co-borrower often makes the difference.

Median home values in the county sit well above the national average, and inventory stays tight. Homes in Santa Clara County regularly sell at or above asking price. A pre-approval with your family's plan already built in lets your child compete with confidence.

Property Tax and Title: Talk to the Right Professionals First

If your name goes on title, you affect property tax reassessment and estate planning. California's Proposition 19 changed the parent-child transfer rules, and the details depend on your situation. I am a mortgage and real estate professional, not a tax attorney or CPA, so bring both into the conversation before you sign.

Five Questions to Answer Before You Pick a Path

1. How much do you want to give, and how much do you want back? A gift ends the story. A co-borrower role does not.
2. Are you planning your own move in the next few years? A co-signed loan on your credit report changes your own approval.
3. How stable is your child's income? If it is growing, the co-borrower role is probably short-term.
4. Do you have other children? Equal treatment matters, so consider how this help fits your estate plan.
5. What is the plan if something goes wrong? Job loss, divorce, and delays happen. Write down the family agreement before closing.

Frequently Asked Questions

Do I have to be on title if I co-borrow?

Not always. Fannie Mae's rules allow a non-occupant borrower with or without an ownership interest. FHA requires a non-occupant co-borrower to sign the security instrument, which gives the co-borrower an ownership interest. Your loan officer will confirm the rule for your loan program.

Does the gift need to come from a parent?

Lenders accept gifts from relatives, and most programs list the acceptable donors. Friends are treated differently, so check with your loan officer before you move any money.

Will helping my child hurt my own ability to get a mortgage?

A gift does not touch your credit. A co-borrower or cosigner role does, because the loan counts as your debt in future applications.

Is it possible for my child to buy without help?

Yes, in many cases. Down payment assistance, first-time buyer programs, and flexible loan options exist. A short call helps you see where your child stands before you open your wallet.

How early should we talk to a lender?

Before you shop. A plan built around the right structure from day one saves time, money, and stress.

Let's Look at Your Family's Numbers

Every family's situation is different. A 20-minute call shows you the options and what each one means for your finances.

• Book a time: calendly.com/yourcaliloanpro
• Call or text: (408) 687-6109
• Email: chris_j@ouraffinity.com
• Start your pre-approval: Apply here
• Not sure where you stand? Take the free Buyer Readiness Assessment

Chris Johnson | Associate Broker | Affinity Mortgage | NMLS #235072 | Affinity Mortgage NMLS #252576 | 2542 S Bascom Ave, Suite 185, Campbell, CA 95008 | Equal Housing Lender. This article is for educational purposes only and is not legal, tax, or financial advice. Loan programs, limits, and guidelines change. Talk with a licensed professional about your situation.