Roommate and Boarder Income on a Seattle Mortgage

Roommate income can help with a Seattle mortgage, but only on certain loans and only when the roommate already lives with you. A standard Fannie Mae conventional loan generally does not count rent from a boarder at all. HomeReady and FHA can count it after a 12-month history, capped at 30 percent of your qualifying income, and VA can count it with two years of tax returns. For most buyers, a roommate helps you afford the payment rather than qualify for it.

A lot of the single buyers I talk with on Capitol Hill and in the U District plan to rent out a bedroom. A two-bedroom condo near Broadway, or a house a few blocks from campus with a spare room for a graduate student, can make the monthly cost feel much more manageable. The question I hear is whether that rent counts toward the loan. The honest answer is that it depends on the program, on how long the roommate has already lived with you, and on the paper trail you can show.

For this page I read Fannie Mae's Selling Guide sections on boarder income (B3-3.4-04) and HomeReady (B5-6-01 and B5-6-02), HUD Handbook 4000.1 in its current update, Chapter 4 of the VA Lender's Handbook (VA Pamphlet 26-7), and the City of Seattle's rental registration FAQ, on October 20, 2026. Freddie Mac's guide was not readable to me that day, so I do not describe its Home Possible rule here. Lenders can also set rules stricter than any agency, and I confirm the treatment on your file.

What Counts as Roommate Income on a Seattle Mortgage

Mortgage guidelines call a roommate who pays you rent a boarder. FHA's handbook defines a boarder as someone "renting space inside the Borrower's Dwelling Unit" and adds that "a renter of an ADU is not a Boarder." That boundary matters, because each kind of rent has its own rules and its own guide on this site:

• A roommate in your home, sharing your kitchen and living space, is a boarder. That is this page.
• A tenant in an accessory dwelling unit on your lot is rental income from an ADU, covered in my ADU rental income guide.
• Tenants in the other units of a duplex, triplex or fourplex you live in are covered in my guide to house hacking in the U District.
• A friend or partner who buys with you and signs the loan is a co-borrower, not a boarder. That path is on my co-borrower mortgage guide.

Roommate Income on a Standard Conventional Loan

Fannie Mae's guide is direct: income from boarders living in your principal residence or second home "is not considered acceptable stable income" (B3-3.4-04, dated March 4, 2026). On a standard conventional loan, a roommate's rent generally does not appear in your qualifying income at all.

There is one exception in that section. When a borrower with disabilities receives rent from a live-in personal assistant, relative or not, that rent can count up to 30 percent of the total income used to qualify. The guide notes these assistants are typically paid through Medicaid Waiver funds that include room and board. The lender documents it the same way as other boarder income: proof of shared residency and 12 months of payments received.

That is why the most common answer I give is "it helps you afford it, not qualify for it." The rent is real money in your budget each month. It just is not income an underwriter counts on this loan.

HomeReady: The Conventional Exception for Roommate Income Mortgage Seattle Buyers

HomeReady is Fannie Mae's conventional program for buyers whose income falls within its limits, and it carries a broader boarder rule (B5-6-02, dated November 5, 2025). Rent from one or more people who live with you, related to you or not, may count as stable income on a one-unit home, up to 30 percent of the total income used to qualify, if each boarder:

• is not on the mortgage and has no ownership interest in the home;
• has lived with you for the last 12 months;
• can show a history of shared residency, such as a driver's license, a bill or a bank statement showing your address; and
• can show rent paid to you, such as canceled checks, for the last 12 months, or for at least 9 of the most recent 12 months with the rent averaged over 12 months.

Rent the boarder pays directly to someone else, such as your landlord, does not count. And the 12 months do not have to be in the home you are buying. If a roommate has shared your current apartment for a year and is moving with you, that history is what the lender looks at.

HomeReady has an income ceiling, and boarder rent you use to qualify is part of the income measured against it. Fannie Mae says the "total annual qualifying income may not exceed 80% of the AMI for the property's location." I cover how that limit works in King County in the Income Limits and Eligibility section of my 3 percent down conventional loan guide, and I run the lookup for your address.

FHA Rules for a Roommate Income Mortgage: Seattle Buyers With a Boarder

FHA allows rent from existing boarders when you, as the occupying borrower, have a 12-month history of receiving it and are receiving it now. It does not matter whether you currently rent or own the home you share. The handbook asks the lender to document:

• your rental history over the previous 12 months;
• boarder rent received for at least 9 of the most recent 12 months, shown on your tax returns or on bank statements, canceled checks or deposit slips;
• evidence that the boarder's address is the same as yours; and
• a signed written agreement setting out the boarding terms and the boarder's intent to keep living with you.

The qualifying figure is the lesser of the 12-month average and the current rent in the written agreement. Where rent was received for 9 to 11 of the last 12 months, it is still averaged over 12. And like HomeReady, the boarder rent used can be no more than 30 percent of the total monthly income used to qualify you. FHA's full program rules are on my FHA loan page.

VA Loans and Temporary Boarder Income

The VA Lender's Handbook, Chapter 4, has a short section on "temporary boarder rental income" for a single-family home. It asks for two things: signed and dated individual tax returns, with all schedules, for the previous two years showing boarder income generated by the property, and a rental that does not impair the home's residential character or take up more than 25 percent of its total floor area.

The lender counts the income only if you have a reasonable likelihood of continued success because of the strength of the local market, and justifies that on the VA loan analysis form. The handbook says reserves are not needed to use it and that all of the income may be used. Because the requirement is two years of tax returns showing boarder income from the property, it fits a refinance far more easily than a first purchase. My VA home loans guide covers the rest of the program.

Roommate Income Mortgage Seattle Limits: The 30 Percent Cap and Future Roommates

Two limits catch most buyers by surprise.

The cap is 30 percent of the total, not of your pay. On HomeReady and FHA, boarder rent can be at most 30 percent of all the income used to qualify, including the rent itself. In practice, that means boarder rent can be at most about 43 cents for every dollar of your other income. A buyer earning $4,000 a month from a job can count no more than about $1,714 a month of boarder rent, even if the roommate pays $2,000.

Future roommates do not count. None of the guides I read counts rent from someone who has not yet lived with you. HomeReady requires the last 12 months, FHA counts existing boarders with a 12-month history, and VA asks for two years of returns. If your plan is to buy first and find a roommate after, budget for the rent, but qualify on your own income.

An Illustrative Roommate Income Mortgage Seattle Example

This example is illustrative only, with figures chosen for easy math on October 20, 2026. It is not a quote, uses no interest rate, and assumes the buyer is within the HomeReady income limit.

A Capitol Hill buyer earns $7,000 a month in salary. For the past 12 months a roommate has shared their apartment and paid $1,100 a month by bank transfer, and the roommate is moving with them into a two-bedroom condo.

• Standard conventional loan: the rent does not count. Qualifying income is $7,000.
• HomeReady: the cap allows up to about $3,000 of boarder rent on $7,000 of salary, so the full $1,100 counts. Qualifying income is $8,100.
• FHA: the written agreement now says $1,150, but the 12-month average is $1,100, and the lesser figure is used. Qualifying income is again $8,100.

Now change one fact. Suppose the roommate missed two months, so 10 payments arrived in the last 12. HomeReady and FHA both still accept it, but average over 12 months: $11,000 divided by 12 is about $917 a month, so qualifying income is about $7,917. My debt-to-income guide shows how that monthly figure turns into the ratio a lender reads.

Roommate Income Mortgage Seattle Alternative: Putting the Roommate on the Loan

If your roommate is a close friend or partner planning to stay for years, the other route is to buy together, with both of you on the loan. Their income then counts in full under the usual employment rules, not as capped rent, but their debts and credit count too, and they become a co-owner with rights to the home. HomeReady's boarder rule only works when the boarder is not on the mortgage and has no ownership interest, so the two paths do not mix. The trade-offs, including what happens when one of you wants out, are on my co-borrower guide. If your roommate earns overtime or tips, my overtime and commission income guide covers how that pay is averaged.

Seattle Rental Registration When You Rent Out a Room

Seattle's Rental Registration and Inspection Ordinance, or RRIO, requires most rental properties in the city to be registered. The City's RRIO FAQ says that if you are renting a room in a home or unit that you own, the property is considered owner-occupied and does not need to register. Renting a room generally means you and your tenant share the common living areas, the kitchen and the entryways. A separate unit with its own kitchen and entrance, such as an ADU, does need to be registered. If you are unsure which side of that line your setup falls on, the City's RRIO helpline is (206) 684-4110.

One practical note for condo buyers: your building's rules may limit renting or require tenants to be registered with the association. That is a question for the HOA documents, and my condo resale certificate guide explains the package that delivers the declaration, bylaws and rules to you before closing.

What to Gather for a Roommate Income Mortgage in Seattle

1. Twelve months of proof of rent received, such as bank statements showing each deposit or copies of canceled checks. Payments made to your landlord on your behalf do not count on HomeReady.
2. Proof you share an address, such as your roommate's driver's license, a utility bill or a bank statement in their name at your address.
3. A signed boarding agreement stating the rent and that your roommate intends to keep living with you. FHA requires one, and it is useful on any file.
4. Your last two years of tax returns, especially for a VA loan, where the boarder income has to appear on them.
5. The usual income and asset documents for yourself. The rent is added to your own income; it does not replace it.

For the full sequence of steps, see my how to get a mortgage guide, or the U District neighborhood guide and Capitol Hill neighborhood guide for the areas themselves.

FAQ: Roommate Income Mortgage Seattle Questions