Should You Rent Out Your California Home Instead of Selling It?

Relocating, upgrading, or simply not ready to let go of a home you've lived in doesn't have to mean selling it. Plenty of California homeowners choose to rent out a primary residence instead, keeping the property while someone else covers the mortgage. But converting a home you've lived in into a rental comes with real rules that didn't apply while you lived there yourself, from a reworked security deposit law to a capital gains exclusion that can shrink the longer the home sits as a rental before you eventually sell. Here's what actually changes.

What Changed With AB 12 and Security Deposits in California?

Assembly Bill 12 took effect July 1, 2024, and caps most California residential security deposits at one month's rent, whether the unit is furnished or unfurnished. That's a significant drop from the two- or three-month deposits landlords could previously charge, and it's a single, unified cap: there's no separate pet deposit or cleaning deposit allowed on top of it anymore.

Source: alleastbayproperties.com, California security deposit law summary, AB 12 and AB 2801, 2026.

If you own your home as a single property, you likely qualify for the small-landlord exception, which allows up to two months' rent as a deposit rather than the standard one-month cap, unless your tenant is an active-duty service member, in which case the one-month cap applies regardless. Whatever amount you collect, you have 21 days after the tenant moves out to return it, along with an itemized statement of any deductions.

What Does AB 2801 Require Before and After a Tenant Moves In?

A related law, AB 2801, takes effect July 1, 2025, and requires landlords to document the unit's condition with photos or video both before a new tenant moves in and after they move out. This protects both sides: it gives you a documented baseline to support any deposit deductions, and it gives your tenant proof of the condition they received the unit in. If you're converting a home you lived in yourself, do this walkthrough and documentation step even though it might feel unnecessary for a place you know intimately, since it's the same protection a tenant in any other rental would have.

Does Renting Out Your Home Put Your Mortgage or Insurance at Risk?

Two things worth checking before you sign a lease with a tenant. First, many conventional mortgages include an owner-occupancy clause or rider from when you originally financed the home as a primary residence; converting it to a rental without notifying your lender can, in some cases, violate the loan's terms, so a call to your loan servicer is worth making before you list it. Second, a standard homeowners insurance policy is written for owner-occupied property and typically doesn't cover a long-term rental the same way; you'll generally need to switch to a landlord or dwelling-fire policy once a tenant moves in. Neither of these is usually a dealbreaker, but both are easy to overlook when the plan is "just rent it out for now."

What Happens to Your Capital Gains Exclusion If You Rent Before Selling?

This is the piece that catches people off guard, so treat what follows as general information, not tax advice, and confirm your own numbers with a CPA before you rely on it. Under IRS Section 121, you can typically exclude up to $250,000 of gain ($500,000 for married couples filing jointly) when you sell a home, provided you meet both the ownership test and the use test: you owned the home for at least 2 of the last 5 years before the sale, and you used it as your main home for at least 2 of the last 5 years. Those two 2-year periods don't have to be the same stretch of time, but both have to fall somewhere inside the 5 years leading up to the sale.

Where renting the home out gets complicated is a rule called nonqualified use. If you convert a home you lived in into a rental and then sell it, any period of rental use before the last time you lived there as your main home counts as nonqualified use, and it proportionally reduces how much of your gain the exclusion can cover. In simple terms, if you lived in the home for 4 years and then rented it for 1 year before selling, roughly four-fifths of your gain might qualify for the exclusion rather than all of it. Critically, this proration generally only applies to rental periods before your last stretch of living in the home, not after, so the exact order of events matters. Separately, any depreciation you claimed while the home was a rental is generally not eligible for the exclusion at all and gets taxed on its own as depreciation recapture, regardless of how the rest of the gain is treated. Because the math depends on your specific timeline, your depreciation schedule, and current IRS rules at the time you eventually sell, this is exactly the kind of calculation to run by a CPA before you commit to a long-term rental strategy over simply selling now while your full exclusion is intact.

Frequently Asked Questions

How much can I charge for a security deposit if I rent out my California home? Most landlords are capped at one month's rent. If you own 2 or fewer properties totaling 4 or fewer units, you may be able to charge up to 2 months, except for active-duty service member tenants, who are always capped at 1 month.

How long do I have to return a tenant's security deposit in California? 21 days after the tenant moves out, along with an itemized statement showing any deductions.

Do I have to document my home's condition before renting it out? Under AB 2801, effective July 1, 2025, yes, landlords must photograph or video the unit's condition both before move-in and after move-out.

Will renting out my home affect my capital gains exclusion when I eventually sell? It can. If the rental period happens before the last time you lived in the home as your main residence, that time counts as nonqualified use and can reduce the portion of your gain the exclusion covers. Talk to a CPA about your specific timeline before deciding.

Do I need to tell my mortgage lender if I start renting out my home? You should check your loan documents or call your servicer first. Many loans written for an owner-occupied purchase include occupancy terms that can be affected by converting the home to a rental.

Bottom Line

Renting out a home you've lived in can be a smart way to hold onto a property while you relocate or wait out the market, but it comes with real compliance steps: a one-month deposit cap in most cases, move-in and move-out documentation under AB 2801, a conversation with your lender and insurer, and a capital gains question that's worth running by a CPA before you commit. If you're weighing whether to rent or sell, contact Rise Realty California for a side-by-side look at what each path could mean for your specific property and timeline.

Sources

• alleastbayproperties.com, California security deposit law summary covering AB 12 and AB 2801, 2026
• Internal Revenue Service, Topic 701, Sale of Your Home (irs.gov)
• taxmodern.com, Section 121 home sale gains exclusion and nonqualified use rules