There are five main ways to qualify for a loan on a Sonoma County vacation rental: your own income, your income plus the home's rental income, your bank statements, your assets, or a DSCR loan that looks only at what the property earns. Once you own it, a newer type of HELOC can also use the rental income to let you pull cash out. Which one fits depends on how you earn, what you own and whether this is your first property.
We asked Stephen Barber of Rate, our preferred lender for vacation rentals, to walk through each option, from the old-school route to the newest products. Stephen is our first call for one reason: very few lenders know how to get a DSCR loan underwritten on a rental forecast for a home that isn't already a vacation rental. In Sonoma County, where a permit expires every time a home sells, that is most of the homes our clients buy.
Quick disclaimer: we are real estate brokers, not lenders. Loan programs, rates and limits change often, so get a current quote before you write an offer.
Option 1: Qualify on your income
This is the method every bank, credit union and broker offers. You document your income with W-2s, pay stubs and tax returns, and the lender checks that it covers your current obligations, including your own home, plus the new mortgage.
Lenders measure this with a debt-to-income ratio: your monthly debts, including the new payment, divided by your gross monthly household income. "Most underwriting programs will allow for a ratio up to 43%, while some niche programs will go up to 49.9%," Stephen says.
Option 2: Your income plus the new property's rental income
If you already own a home, you may be able to count the rent the vacation rental you’re buying is expected to earn, on top of your W-2 income, to help you qualify. To be clear, this is projected rent from the new property, not rent from the home you live in now. Most lenders estimate it with a rent survey of likely long-term rents. A few, including Rate, will use the new property’s projected short-term rental income instead, which is usually higher.
Fannie Mae now has a specific rule for this. Its guidelines allow short-term rental income on one-unit investment properties that are legally permitted to operate as short-term rentals. The lender counts 50% of the new property’s projected gross rent to allow for vacancy and expenses. That income can offset the new property’s own payment, but it can’t boost your other income. You also need a current housing payment, such as the mortgage on the home you already own, which is why first-time buyers usually can’t use this route.
Option 3: Bank statement loans for the self-employed
Many business owners and investors show little income on their tax returns because they write off as much as they can. That's good tax planning, but it makes a traditional loan hard to get.
"In this case we can look at their deposits in their bank statements for the last 12 months to calculate their income," Stephen says. His example is a real estate investor whose rental properties show paper losses on their returns. A cash flow analysis of 12 months of deposits can show the positive income the returns hide.
Option 4: Asset-based loans
Some buyers have modest W-2 income but large investment portfolios. in other words they have a high net worth so are a good customer for a lender. The lender divides your eligible assets by 7 to get an annual income figure. Someone with $2.1 million in investments would show $300,000 a year in income
You can qualify on assets alone, or add the asset income to your W-2 income to get over the line. This is a great option that a lot of investors often don't think about.
Option 5: DSCR loans, where the property qualifies itself
For most vacation rental investors, who aren't able to qualify to purchase one through other income sources, this is the most useful program. A DSCR (debt service coverage ratio) loan ignores your personal income. Stephen calls it positive cash flow underwriting. It comes from commercial lending, and it asks one question: does the property's rent cover its costs?
The lender divides the projected monthly rent by the monthly payment for the mortgage, property taxes and insurance. "As long as the [rent] is equal to or greater than the [payment], we will be able to easily get a loan approval," Stephen says. Most lenders set the minimum ratio at 1.0, and a higher ratio gets better pricing.
The projected rent comes from one of four sources:
- An AirDNA report
- An appraisal from NAN, a national appraisal company whose form includes short-term rental income
- A traditional appraiser working with a local vacation rental manager to find comparable rentals
- The last 12 months of income reports from Airbnb or VRBO, if the home already operates as a vacation rental
The first three are what make Stephen different. "Most lenders allow for a rent survey, which would estimate the proposed long-term rents, while a few niche lenders, such as Rate, will also use the projected STR income," he says. A lender that only accepts long-term rent, or only a home's existing booking history, can't make the numbers work on a home that has never been rented short-term.
Here's an example. A $1,150,000 home bought with 25% down is an $862,500 loan. At an assumed 6.5% on a 30-year fixed, with property tax at about 1.1% and $5,000 a year for insurance, the monthly payment is about $6,920. To reach a ratio of 1.0, the home needs to show about $83,000 a year in projected rental income.
Under the Fannie Mae route, by contrast, only half the gross rent counts, so the same home would need about $166,000 a year in projected income to cover its own payment.
DSCR loans work best for buyers who:
- Already own a home. Most lenders don't offer them to first-time buyers.
- Can put 25% down. It isn't required, but Stephen says pricing is much better and the ratio usually works.
The tradeoff is cost. DSCR rates typically run higher than a conventional investment property loan, so compare both if you can qualify either way.
Pulling cash out later: DSCR HELOCs
The newest product Stephen has seen is a home equity line of credit approved on the same DSCR math. "This is allowing investors to pull some money out of their STR without messing with their first mortgage," he says. That matters if you locked in a low rate and want cash for the next purchase without refinancing.
Second home or investment property?
Second-home loans carry lower rates and smaller down payments, so buyers often ask about them. But a second-home loan requires you to use the home yourself and qualify without the rental income. If you plan to run it as a full-time vacation rental, finance it as an investment property, and tell your lender exactly how you'll use it.
How you finance it also affects your taxes. If you plan to use cost segregation to offset your W-2 income, talk to your lender and your CPA before you choose a loan.
What's different in Sonoma County
Three local factors shape how a vacation rental loan works here:
- The permit doesn't transfer. When a Sonoma County vacation rental sells, its permit expires, and the new owner applies from scratch under the current vacation rental rules. Lenders using rental income want to know the home can be legally permitted, so start with a home that qualifies. Our eligible vacation rental list shows every one on the market.
- Prices push many loans into jumbo territory. The 2026 conforming loan limit for a single-family home in Sonoma County is $897,000. Above that, you're in jumbo or non-QM lending, where terms vary more between lenders.
- The seller's income history helps. If the home already runs as a vacation rental, its last 12 months of booking reports can support a DSCR loan, even though the permit itself won't carry over.
Which route fits you
- Strong W-2 income and low debts: a conventional investment property loan.
- You already own a home and the rental income closes the gap: conventional, using the projected rent.
- Self-employed with low taxable income: a bank statement loan.
- Large portfolio, modest salary: an asset-based loan.
- You want the property to qualify on its own: a DSCR loan.
Whichever route you take, get pre-approved before you start buying a vacation rental in Sonoma County. The best eligible homes often have more than one investor bidding, and a seller will favour the buyer whose financing is already lined up.
Working out how to finance a vacation rental? Email me directly at david@bruingtonhargreaves.com and I'll put you in touch with Stephen.
About the Author
David Hargreaves is the co-founder of BruingtonHargreaves, one of Sonoma County's top-ranked real estate teams and part of W Real Estate. Originally from the UK and an Oxford University graduate, David built and ran a digital marketing agency serving Google, Facebook, and other major brands before becoming one of Sonoma County's top agents within three years of entering real estate.
Today he and business partner Jonathan Bruington have sold more than $230 million in Sonoma County homes over the past three years, earning recognition as a RealTrends No. 2 team in the county and the No. 1 team in Healdsburg. David specialises in helping Bay Area buyers and sellers with luxury properties and vacation rentals across Healdsburg, Windsor, Santa Rosa, and the Russian River communities.
He lives in Sonoma County with his wife Nancy and is happiest cycling the back roads, exploring local wineries, or behind a camera. Have a question about buying, selling, or building in Wine Country? Book a free call.