The Quick Read: Whether ADU rent counts at all is up to the individual lender. No federal rule sets it for jumbo loans. Lenders that do count it usually want a lease, an appraiser’s rent opinion, and proof the unit is legal and rentable. Get the lender’s written ADU policy before you write an offer.
- A jumbo loan sits outside the Fannie Mae and Freddie Mac framework, so each lender writes its own ADU policy.
- Lenders that count ADU rent usually borrow the agency method, but that is market practice, not a rule.
- The rent has to be verifiable. A lease, an appraisal rent schedule, and proof of payment do that work.
- Test the file without the rent first. If it works, the ADU is a bonus and the paperwork gets lighter.
Why Is ADU Rent Lender-Specific on a Jumbo?
A jumbo loan is a loan above the county’s conforming limit. The FHFA sets that limit, and it differs by county. Because jumbo loans are not sold to Fannie Mae or Freddie Mac, their ADU rules are not binding on the loan.
Jumbo payment estimate
The starting figures are an example price in the jumbo range with ten percent down on a thirty-year fixed. Replace them with yours.
Editable benchmark: 7.40% as of October 15, 2026 · Freddie Mac 30-year average via FRED®. A conventional market reference, not a jumbo loan quote.
Illustrative starting assumptions: a $1,000,000 price in the jumbo range, ten percent down on the top-leverage lane, a thirty-year fixed structure at the current Freddie Mac conforming benchmark, and property taxes and insurance estimated at typical national rates. Every field is editable.
Illustrative estimate only — not a Loan Estimate, approval, quote, or commitment to lend. The rate field carries the weekly Freddie Mac thirty-year conforming benchmark, a market reference and not a jumbo loan quote; jumbo rates are set by the lender and the lane at lock and differ from the conforming benchmark. An adjustable-rate scenario is shown at the benchmark for the whole term; the rate after the initial period is unknown. Reserve months and appraisal counts follow the lane sheet for the amount band; the automated finding may require more. Taxes, insurance and dues are editable estimates; closing costs are not included. On most lanes the conforming limit for the county decides whether a loan is jumbo at all; two lanes start at a stated dollar floor instead. Licensed in sixteen states for consumer mortgages.
Here is how it plays out on files. One lender counts ADU rent much like Fannie Mae does. Another counts a smaller share. A third refuses it and wants the file to qualify on the borrower’s other income. No public source lists these overlays, so the only reliable answer is the specific lender’s written guideline.
Across the wholesale jumbo programs Lendmire places files with, the common pattern is this. The lender wants any income it relies on to be verifiable and stable. ADU rent that a seller’s tenant happens to pay today is not stable until the paperwork says so.
For context on the broader program envelope, the jumbo loan programs Lendmire arranges run to $5,000,000 on the largest lanes. Leverage reaches 90% on the headline lane, with a 660 decision score. The ratio ceiling is 50% on the fixed lanes. All of this is subject to lender guidelines and full file review.
What Does the Agency Method Look Like?
Most lenders that count ADU rent model it on agency practice. Agency rules are a reference point here, not a requirement.
Under the Fannie Mae Selling Guide, ADU rent can count only on a one-unit principal residence. It applies to a purchase or limited cash-out refinance, comes from one existing ADU, and is capped at 30% of total qualifying income. Fannie announced the change in Selling Guide Announcement SEL-2025-08. Before it, ADU rent on this kind of file was not allowed.
Freddie Mac’s Guide Section 5306.1 counts 75% of the gross lease rent. With no lease, it uses 75% of the market rent from the appraiser’s analysis. The 25% haircut covers vacancy and upkeep. The net rent is also capped at 30% of stable monthly income.
Take those as a model, not a promise. A jumbo lender may use a lower share, a different cap, or none.
What Does the Lender Need to See?
Expect a package built around one idea: the rent has to be real, legal, and likely to continue. Here is the usual set, why each piece exists, and who supplies it.
| Document | What it proves | Who supplies it |
|---|---|---|
| Fully executed lease | Rent amount, term, tenant | Seller or buyer |
| Appraisal rent schedule | Market rent for the ADU | Appraiser |
| Proof of payment | Rent is actually paid | Seller or tenant |
| Zoning or permit evidence | Unit is legal | Seller, city records |
| Current housing payment record | Borrower’s existing obligation | Buyer |
The appraisal piece matters most. Fannie’s sample scenarios call for a standard appraisal plus a Single-Family Comparable Rent Schedule (Form 1007), with the appraiser stating that the rent estimate is for an ADU on a one-unit principal residence. If the appraiser can’t find rented ADU comparables, similar non-ADU rentals may be used with adjustments.
Order the rent schedule with the appraisal, not after. A missed rent schedule means a second trip to the appraiser.
Lease, Appraisal, or Both: Which One Governs?
Both usually matter, and the lower figure tends to win. Under the Fannie guide, the rent schedule must support the lease. If market rent doesn’t reasonably support the lease rent, the lender must document why the income is stable or use the lesser amount.
Picture a lease that sits well above what the appraiser finds for similar units. The underwriter will not credit the lease figure. It will use the appraiser’s number, or ask for an explanation. A below-market lease, such as one with a relative, is treated the other way: the lender may use the lease amount, since that is what is actually paid.
When the listing, the lease, and the appraisal all disagree, the usual order of weight is:
1. The signed lease, if it is consistent with the appraisal’s market rent.
2. The appraiser’s market rent, if there is no lease or the lease is out of line.
3. The listing’s stated rent. Treat it as a starting point, not evidence.
What If There Is No Lease, or the Unit Is Vacant?
Vacant doesn’t automatically mean zero. Under the agency method, a file with no lease can use a share of the appraiser’s market rent. A jumbo lender might do the same, require a signed lease first, or give the rent no credit at all. Ask before you count on it.
If the seller’s tenant is staying, the purchase file needs the lease to transfer. That means a fully executed lease, and often some written confirmation from the tenant of the terms. A lease that starts after closing is a red flag on many files, so don’t assume it counts.
Rent comparables should reflect monthly leases. Form 1007 is built for monthly rentals, so nightly or short-term rental income generally does not fit this method.
Why Do Zoning and Legal Status Matter?
An unpermitted ADU can sink the rent credit. Freddie Mac’s 2022 bulletin requires the ADU to meet zoning and land-use requirements. Lenders use the same logic: if the unit can’t be rented legally, the rent isn’t dependable.
Ask the seller for permits, the certificate of occupancy where one exists, and any city record showing the unit’s status. Check the county’s rules before you rely on the unit. A buyer can chase down these records during the contract period, before the appraisal comes back.
How Does the Rent Flow Through the Math?
Rent used for lender review goes into income. It does not get subtracted from the payment. The full housing payment stays in the ratio.
The steps look like this:
1. Take the lease rent or the appraiser’s market rent, whichever the lender uses.
2. Apply the lender’s haircut. The agency method keeps 75%.
3. Check the result against the lender’s cap. The agency method uses 30% of total qualifying income.
4. Add it to income and run the debt-to-income ratio with the full payment.
Consider a borrower who fails the ratio without the rent and passes with it. Jumbo lanes carry ratio ceilings, 50% on the fixed lanes, 45% on the adjustable lanes, and 43% on the interest-only lanes, so the rent can matter on a tight file. The ceilings are subject to lender guidelines.
Qualifying income is not cash in hand. The haircut exists because units sit empty and need repairs. Budget for that. If the tenant leaves, you still owe the full payment.
What Red Flags Make a Lender Discount the Rent?
A few things reliably cause the rent to be reduced or ignored:
- A lease well above or well below market, with no explanation.
- Cash rent with no deposit trail.
- An unpermitted or non-conforming unit.
- Short-term or nightly rental use.
- A lease that starts after closing.
- Several ADUs. The agency method counts income from one only.
- A borrower living in the ADU. Freddie’s ADU FAQ says rent from the main dwelling can’t be used then.
Landlord history can matter too. Under Fannie’s rules, a borrower with under 12 months of property-management experience can see the rent limited. Freddie refers to a landlord-education requirement unless the borrower has a year of experience.
What Happens From Offer to Closing?
Use this order to keep the file clean:
1. Before the offer, ask the lender for its written ADU policy.
2. During the contract period, request the lease, payment history, and permit records from the seller.
3. Tell the appraiser early that the unit is an ADU and that a rent schedule is needed.
4. Submit the lease, rent schedule, and proof of payment together.
5. Answer underwriting conditions with documents, not explanations.
Rent that isn’t needed to qualify may not need documenting at all. Under the CFPB’s Ability-to-Repay guide, a lender verifies the income it relies on with reasonably reliable third-party records, and only what it relies on.
What If the Rent Doesn’t Count?
Run the file without it. If the ratio and reserves work on your other income, the ADU rent becomes extra cash flow and the file is simpler. If it only works with the rent, look at structure. Options a lender may review include a larger down payment, a different lane, or a different loan amount. Reserves in these programs are measured in months of the full payment and rise with the loan amount. A bigger down payment doesn’t remove the need to document income the lender relies on.
Some lanes also require two appraisals above a threshold amount, which adds another appraiser to the ADU rent conversation. Raise it early.
Related reading: Lendmire’s piece Does an Existing Lease Set the Rent on a Jumbo DSCR Purchase? covers how lenders weigh a lease against market rent. Reserve documentation is its own task, and the guide How to Document Jumbo Loan Reserves for a Second Home Purchase is useful.
Key Terms Defined
ADU (accessory dwelling unit): A separate, self-contained living space on the same property as the main home.
Rent schedule (Form 1007): An appraiser’s report estimating the market rent for a unit.
Market rent: What similar units in the area rent for, as the appraiser finds it.
Haircut: The share of rent the lender leaves out to cover vacancy and upkeep.
Debt-to-income ratio: Your monthly debts, including the new housing payment, divided by your monthly income.
Frequently Asked Questions
Does ADU rent always count on a jumbo loan?
No. Each jumbo lender sets its own policy. Some count it much like the agencies do, some count less, and some don’t count it. Ask for the written guideline before you rely on it.
Can I use rent from an ADU I plan to live in?
Generally not. Freddie Mac says rent from the main dwelling can’t be used if the borrower occupies the ADU. Lenders that borrow the agency method usually follow the same logic.
What if the seller’s tenant leaves before closing?
The lease no longer supports the income. The lender may fall back on the appraiser’s market rent, ask for a new lease, or give no credit. Check the lender’s policy before you assume anything.
Does the lender use my estimate of the rent?
No. The lender relies on a lease and the appraiser’s rent schedule, not a buyer’s estimate. Where they differ, the lesser figure usually governs.
Is a short-term rental ADU treated the same way?
Usually not. The rent schedule is built for monthly leases, and rent comparables should not be short-term or transient rentals. Nightly income generally doesn’t fit this method.
If you are buying a home and want to see whether a jumbo loan fits your file, Lendmire can help you compare the options and what each one asks of the file. Program details are subject to lender guidelines and full file review, and nothing here is a commitment to lend.
For your own numbers, request a scenario review with Lendmire.
About Lendmire
Lendmire is a mortgage brokerage (NMLS# 2371349) licensed for consumer mortgage lending in 16 states, arranging FHA, VA, conventional and jumbo purchase and refinance loans through a wholesale lending network. Eligibility is determined by the lender on each file. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. FHFA conforming loan limit values
2. Fannie Mae Selling Guide B3-3.8-02
3. Fannie Mae Selling Guide Announcement SEL-2025-08
4. Freddie Mac Guide Section 5306.1
5. Single-Family Comparable Rent Schedule (Form 1007)
7. ADU FAQ
8. CFPB Ability-to-Repay and Qualified Mortgage Compliance Guide
This article is part of Lendmire’s jumbo loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can a Jumbo Purchase Close With the Home Vested in a Revocable Trust? · How Jumbo Loan No-PMI Lane Rules Work for a Condo Purchase · How Jumbo Loan Reserve Requirements Work
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Required disclosures. Lendmire (NMLS# 2371349) operates as a licensed mortgage broker, not a direct lender or depository. The discussion in this article is general in nature and should not be relied upon as financial, legal, or tax advice — every investment scenario is unique and should be reviewed by a qualified professional. Any loan inquiry is subject to lender underwriting, and this article is not a commitment to lend or a guarantee of approval. Mortgage rates, loan terms, and program guidelines vary by borrower, property, and state, and may change without notice. Equal Housing Opportunity. Verify licensure at NMLS Consumer Access.