Can You Use Future Rent to Qualify for a Mortgage?

Lenders don't make you wait for a tenant to move in before they'll consider rental income. If an appraiser can support a market rent number, that number does real work on your debt-to-income ratio the day you close, not months later once a lease is signed.

That said, "future rent" isn't one rule. Fannie Mae and Freddie Mac treat an owner-occupied 2-4 unit purchase (the classic house-hack) differently than a purchase where you won't live in the property at all. Getting the distinction wrong is how a file gets re-underwritten a week before closing.

What is a Form 1007 market-rent appraisal?

Form 1007 is the standard Fannie Mae/Freddie Mac rent schedule an appraiser completes alongside the regular purchase appraisal. The appraiser pulls comparable rentals in the immediate area and estimates a monthly market rent for each unit, whether or not the unit is currently rented. It's a separate line item the appraiser adds to the assignment, and most lenders order it automatically any time rental income from the subject property will be part of qualifying.

The number that comes back on Form 1007 is the one the underwriter uses, not a number you or your agent estimate from a rental listing site.

How does the 75% offset actually work?

The underwriter takes the Form 1007 market rent and multiplies it by 75%. That haircut is Fannie Mae and Freddie Mac's standard vacancy and maintenance factor, and it applies whether the income comes from a lease or from the appraisal alone. The resulting figure gets compared against the new PITIA on the unit or units in question.

If the offset amount is smaller than the PITIA, the shortfall gets added to your other monthly debts. If the offset is larger, the surplus can, in some cases, count as additional qualifying income rather than just canceling out the payment. Which outcome applies depends heavily on occupancy, which is where the two purchase types split.

What's different about a 2-4 unit owner-occupied (house-hack) purchase?

When you're buying a 2-4 unit property and living in one of the units, only the rent from the units you won't occupy counts. The unit you live in doesn't generate rental income for qualifying purposes, obviously, but it also means the offset is calculated against a share of the total PITIA, not the whole payment.

Fannie Mae and Freddie Mac also look at whether you have documented landlord or property management experience. Without it, some lenders limit how the rental income can be used, treating it strictly as an offset to the subject property's payment rather than income that lowers your overall DTI further. With documented experience, or in some cases with adequate reserves, that surplus can flow through as qualifying income the same way a W-2 paycheck would.

This is the scenario most first-time house-hackers ask about, and it's also where the investment property financing pillar and standard owner-occupied programs like FHA overlap, since FHA allows a similar rental-offset concept on multi-unit purchases under its own guidelines.

What's different about a pure investment property purchase?

On a non-owner-occupied purchase, since you're not living in any unit, the entire property's market rent is eligible for the 75% treatment. But conventional lenders typically also want to see that you're already carrying your own housing expense elsewhere (rent or a mortgage on your primary residence), and reserve requirements tend to be stricter than on an owner-occupied house-hack.

The rental income from the new investment property offsets that property's own PITIA. It doesn't touch the DTI math on your primary residence's mortgage. If the property doesn't cash-flow on paper after the 75% haircut, the negative amount gets added to your monthly debts just like any other liability.

Do I need a signed lease, or is the appraisal enough on its own?

For a purchase, the property is usually vacant or being delivered vacant at closing, so the Form 1007 market rent stands on its own; you don't need a lease in hand. If the property comes with an existing tenant and lease, most lenders use the lower of the lease amount or the Form 1007 market rent before applying the 75% factor, since a below-market lease shouldn't be able to inflate your qualifying income.

Is there a way to skip this math entirely?

If the appraisal-based math is too conservative for your file, or if you'd rather not have your personal income and DTI drive the decision at all, a DSCR loan is worth a look. These non-QM loans size the mortgage off the property's actual or appraised rent relative to its own PITIA, full stop, with no personal income documentation involved. Run the numbers on the DSCR calculator before you go shopping to see roughly where a property needs to land, and browse the non-QM lending page for how these loans compare to conventional financing on investment purchases.

House-hack vs. pure investment purchase vs. DSCR

| Feature | 2-4 unit owner-occupied (house-hack) | Pure investment purchase | DSCR / non-QM investment loan | |---|---|---| | Who qualifies on income | Borrower's personal income plus offset | Borrower's personal income plus offset | Property's rent only, no personal income used | | Rent used | Only non-owner-occupied units | Entire property | Entire property | | Offset factor | 75% of Form 1007 market rent | 75% of Form 1007 market rent | Actual or appraised rent vs. PITIA ratio | | Landlord experience required | Sometimes, to use surplus as income | Not always, but affects reserves | Not required | | Existing housing expense required | No | Usually yes | No |

A real scenario

A buyer came to Jesse wanting to purchase a duplex, planning to live in one unit and rent the other. Their personal income alone put the debt-to-income ratio right at the edge, tight enough that the file wouldn't have worked without help from the second unit. The appraiser completed a Form 1007 alongside the purchase appraisal, and the underwriter applied the 75% factor against the market rent for the unit the buyer wouldn't occupy. That offset brought the effective housing payment down enough to clear the DTI threshold, and the purchase closed with the second unit vacant at the time, no lease required because the appraisal supported the number on its own.

Frequently asked questions

What is a Form 1007 rental income appraisal?

It's a standard Fannie Mae/Freddie Mac form an appraiser completes during a purchase or refinance appraisal, estimating fair market rent for one or more units based on comparable rentals in the area, used by underwriters to calculate qualifying rental income.

Does the 75% rule apply to single-family rental purchases too?

Yes, the 75% vacancy and maintenance factor applies to any Form 1007 market-rent figure used for qualifying, whether the property is a single-family investment purchase, a 2-4 unit house-hack, or a refinance.

Can rental income from the property I'm buying lower my DTI beyond just offsetting the payment?

Sometimes. If the 75% offset exceeds the new PITIA, the surplus can be added to your qualifying income on many files, though lenders often want documented landlord experience or reserves before letting that surplus reduce your overall DTI further.

Do I need landlord experience to use future rental income at all?

No, you can generally use the offset to cover the subject property's own payment without prior landlord experience. Experience mainly matters for whether extra income beyond that offset can count toward your broader debt-to-income ratio.

What if I'm buying a 2-4 unit and living in one of the units?

Only the market rent from the units you won't occupy is eligible for the offset. The unit you live in is treated like any owner-occupied primary residence and doesn't generate qualifying rental income.

Is a signed lease required, or does the appraisal alone work?

The appraisal alone is usually enough on a purchase since the property is typically vacant at closing. If a tenant and lease already exist, the lender generally uses the lower of the lease rent or the Form 1007 market rent.

How is this different from a DSCR loan?

A DSCR loan sizes the mortgage entirely off the property's rent-to-payment ratio and skips your personal income and DTI altogether, while the Form 1007 approach described here is used within conventional, FHA, and VA underwriting that still relies on your personal income and debts.

Can I use future rent on an FHA or VA multi-unit purchase?

FHA permits a similar rental-offset concept on owner-occupied 2-4 unit purchases under its own guidelines, and VA has comparable provisions for multi-unit owner-occupied loans, but the documentation requirements differ from conventional financing, so confirm the specifics with your loan officer before you write an offer.

Reviewed by Jesse Gonzalez, NMLS #278103

This article is for general information only and is not a loan approval, rate quote, or financial advice. Program guidelines change and every file is different, so talk to a licensed loan officer about your scenario. True Blue Lending Corporation, NMLS #2380218. Equal Housing Opportunity.