Conventional loan requirements for a down payment assistance second lien cover who may provide the second, where it sits in line behind the first loan, and how much total debt the property can carry. They are a different rulebook from the FHA, USDA and HUD-184 rules behind the assistance options Lendmire arranges. Buyers who assume one rulebook covers all of them get surprised at the underwriting desk.
Key Takeaways
- A second lien is a loan secured by your home, sitting behind your main mortgage. Even when nothing is due monthly, it is still debt. FHA, USDA and HUD-184 each have their own rules for how a second lien is treated.
- Combined loan-to-value caps differ by rulebook. Never carry a number from one to another.
- The assistance options Lendmire arranges are owner-occupied only. No option requires a first-time buyer.
- The decision usually comes down to which first mortgage fits you, then which assistance shape fits that first mortgage.
Why Two Rulebooks Cause the Confusion
Searching for conventional requirements and assistance in the same breath is common, and the confusion is understandable. A conventional loan is one that is not backed by a government agency.
FHA, USDA and HUD-184 loans are government-backed. Each agency writes its own rules for the same kind of second lien. A second that works under one rulebook can fail under another.
Across the wholesale programs Lendmire places files with, the assistance options pair with government first liens. Browse the down payment assistance programs and you will see FHA, USDA and HUD-184 underneath. The conventional rules still matter. Plenty of buyers compare the two paths, and the conventional side is stricter than most expect.
What the Conventional Rules Ask of a Second Lien
Fannie Mae calls its version Community Seconds. It is subordinate financing made under an affordable housing program. Fannie Mae does not buy the second itself. It buys first mortgages that were originated with one, when the Selling Guide is followed, and the lender must review the note, the security instrument and the program description.
The core conditions are these:
- Eligible provider. The money must come from a government body, a housing finance agency, a 501(c)(3) nonprofit, a Federal Home Loan Bank program, a tribe, or the borrower’s employer. The seller or another interested party cannot be the source.
- Subordinate position. The first-mortgage holder must be able to foreclose and take clear title free of the second.
- Allowed uses. The money can cover the down payment, closing costs, renovations, or a permanent buydown on the first loan. It cannot be funded through the first mortgage itself.
- Combined loan-to-value (CLTV). CLTV adds the first and second loans together and divides by the home’s value. Fannie Mae allows up to 105% with a Community Seconds loan, per its Selling Guide eligibility rules.
- Loan type. The deal must be a purchase or a limited cash-out refinance. Second homes, investment properties and cash-out refinances are out.
Two more details matter. Fannie Mae’s Community Seconds FAQ says loans delivered with these seconds carry Special Feature Code 118. It also says that where repayment is required, the maturity or balloon date cannot fall before the earlier of 15 years after the first mortgage’s note date or the first mortgage’s maturity.
Notice what these rules do not say. They do not relax the first loan’s underwriting. Your credit, income and debts still get a full review.
Side by Side: Four First-Mortgage Rulebooks
| Rulebook | Who sets it | Key second-lien point |
|---|---|---|
| Conventional | Fannie Mae, Freddie Mac | Eligible provider; CLTV to 105% at Fannie Mae |
| FHA | HUD | Forgivable lien still counts as debt |
| USDA guaranteed | Rural Development | Guaranteed loan must stay first |
| HUD-184 | HUD, tribal housing | Program itself gives no assistance |
Freddie Mac’s version is called Affordable Seconds. It can be forgivable or repayable, cannot be funded by the seller or another interested party, and requires a primary residence.
USDA’s origination FAQ says assistance programs may be used as long as the guaranteed loan stays in first lien position. It also bars cash back beyond eligible out-of-pocket expenses. HUD’s Section 184 policy handbook says the program does not provide down payment assistance or grants. Approved lenders underwrite those loans, and any assistance comes from tribes or other sources.
How the First Lien and the Assistance Get Underwritten
Here is the sequence, start to finish.
1. Pick the assistance shape. The provider’s own conditions sit on top of the first mortgage’s rules.
2. Underwrite the first lien. The lender reviews credit, income, debts and the property under the first mortgage’s rulebook. An automated underwriting system (AUS) usually drives the decision.
3. Document the second. A grant has no lien. A second has a note and a recorded security instrument that sit behind the first loan.
4. Disclose everything. The source, amount and terms of the second go in the application and to the appraiser.
5. Count the payment. A repayable second adds a monthly payment to your debt ratios. A forgivable second has none, so nothing enters the ratios.
6. Close with no cash back. The second cannot put money in your pocket. First-lien position gets confirmed.
The second loan is its own loan. It gets its own disclosures, and a repayable one also gets a balloon disclosure. That is one reason a buyer should read both sets of papers.
The Four Shapes of Assistance
Across the programs Lendmire arranges through wholesale lenders, assistance comes in four shapes. All amounts are percentages of price or value, subject to program guidelines and full underwriting.
| Shape | Size | Repayment | Credit floor |
|---|---|---|---|
| Grant | 2% or 3.5% of price | Nothing to repay | 620 |
| Forgivable second | 3.5% of lesser of price or value | Forgiven after 36 or 60 on-time payments | 640 |
| Repayable second | 3.5% or 5% | 30-year amortization, balloon in year 10 | 660 |
| Refinance-cost second | 1% to 3.5% of balance | Repayable terms | 660 |
The grant goes toward the FHA minimum investment. It is released at closing with no lien, no payment and no interest. It requires an HUD-approved homebuyer education course. Eligibility is household income at or below 140% of area median income, or a qualifying category. Those categories include first responders, educators, medical workers, civil servants, military personnel, first-time buyers, and buyers in underserved census tracts. It is not offered in Washington and pairs with FHA first liens only.
The forgivable second carries no interest and no monthly payment. It is fully forgiven after the first 36 or 60 on-time first-lien payments, with no delinquency of 90 days or more. It pairs with FHA, USDA and HUD-184 first liens. It covers one or two units and has no income limit beyond USDA’s own on a USDA first lien.
The repayable second is a real loan. It is interest-bearing, with a monthly payment on a 30-year schedule and a balloon due in year 10. At 5%, it covers the 3.5% minimum investment plus 1.5% toward closing costs and prepaids. It allows high-balance first liens but does not allow manual underwriting.
The refinance-cost second covers closing costs on an FHA refinance, with combined leverage up to 104%. It is not for streamline refinances or for refinancing an existing assistance loan. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.
On the second-lien options, a lower-scoring co-borrower’s score can be blended in when the primary wage earner earns at least 60% of household income and holds the higher score. The blended minimums are 660 for the forgivable second and 670 for the repayable one.
Who Qualifies
This part trips people up. No option requires a first-time buyer. Repeat and move-up buyers qualify. The three-year first-time definition is only one of the grant’s qualifying categories.
The second-lien options carry no income limit beyond USDA’s on a USDA first lien. The grant is the one with the 140% area-median-income test.
The home must be your owner-occupied primary residence. Rentals, vacation homes and second homes do not qualify. One assistance program per purchase, too. Nothing stacks, and a mortgage credit certificate is not permitted with the second liens.
The FHA Facts Underneath
The assistance sits on an FHA, USDA or HUD-184 first loan. For FHA, the minimum investment is 3.5% of the lesser of price or appraised value, with a representative credit score of 580 or higher. The assistance options carry higher floors of their own. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
FHA also charges an upfront mortgage insurance premium, which can be financed into the loan. An annual premium applies by loan tier. One-unit FHA loan limits run from $541,287 to $1,249,125 by county.
The second-lien options allow minor non-structural repairs up to $5,000 through an escrow holdback. The escrow is 150% of the estimate, with the work to be finished within a timeframe that varies by file and lender.
Where the General Rule Breaks
The conventional model gives a clean mental picture, but real files bend it. These are the edge cases worth knowing.
Different CLTV tests. Conventional allows up to 105% with a Community Seconds loan. FHA caps combined debt differently, and its own rules for the first and second together are tighter. Lendmire’s piece FHA Loan CLTV and Second Lien Rules With Down Payment Assistance covers the FHA side. Apply the conventional cap to an FHA file and the numbers go wrong.
“Silent” does not mean “gift.” FHA treats even a forgivable second as secondary financing, not a gift. It counts as a lien against your equity until it is forgiven or repaid.
Seller-funded seconds. Conventional rules bar seconds funded by the seller or another interested party.
Nonprofit providers. Under older FHA guidance, a nonprofit that is not an instrumentality of government may still provide a second. The borrower must then make the full 3.5% minimum down payment, and the second cannot fund any of it. Current agency text is the final word here, so lenders verify it file by file.
Refinancing later. A conventional limited cash-out refinance requires the second’s holder to agree to stay behind the new first loan, which is called resubordination. USDA has a similar step for silent seconds. Tribal providers may need to approve payoff or subordination.
Shared appreciation. Fannie Mae permits seconds that take a share of future appreciation, but only as Community Seconds on conventional loans.
Resale-restricted homes. Shared-equity and land-trust homes carry their own provisions.
Counseling and tax. The grant requires homebuyer education, and the buyer pays up front with the cost credited back at closing. Tax treatment can depend on your situation; buyers should speak with a qualified tax professional before relying on any deduction or credit.
Programs change. Many public programs cap assistance, add a recapture period, or require mortgage insurance. Rules differ by program. Check the provider’s current terms, or talk to a housing counselor.
What the Decision Looks Like in Practice
Picture a repeat buyer moving up from a starter home. Credit sits in the mid-600s, savings are thin, and the new place is a one-unit primary residence. A conventional path with a Community Seconds loan would need an eligible provider and a conventional-friendly first loan. An FHA first lien with a forgivable second may fit the credit profile better, since no monthly payment enters the ratios.
Now picture a nurse buying in an underserved census tract. The grant could cover part of the FHA minimum investment with nothing to repay, provided the file meets the 620 credit floor and the education requirement.
A buyer who needs closing-cost help too, and can handle a higher payment, may lean toward the repayable second at 5%. That choice adds a monthly payment and a balloon due in year 10. A buyer planning to move or refinance before then can handle that. Others will find it a heavy ask.
The practical questions to put to a loan officer:
- Which first mortgage fits my credit, income and property?
- Which assistance shape pairs with it?
- Does the second add a payment, and when does any balloon come due?
- What happens if I sell or refinance?
Key Terms Defined
Second lien: A loan secured by your home that ranks behind your main mortgage if the home is sold or foreclosed.
Subordinate financing: Any loan that sits behind the first mortgage in claim on the property.
Combined loan-to-value (CLTV): The first and second loans added together, divided by the home’s value.
Balloon: A lump-sum balance that comes due at a set point, here in year 10 on the repayable second.
Forgivable: A loan that is wiped out if you meet its conditions, such as 36 or 60 on-time first-lien payments.
Resubordination: Agreement by the second-lien holder to stay behind a new first loan when you refinance.
Frequently Asked Questions
Can a conventional loan use a down payment assistance second lien?
The provider must be eligible, the second must sit behind the first, and the home must be a primary residence. The assistance options Lendmire arranges sit under FHA, USDA or HUD-184 first liens instead.
Does a second lien change my conventional loan’s credit and income requirements?
No, the first loan is still fully underwritten. A forgivable second lien typically adds no monthly payment, but it is still a lien against your future equity.
Do I have to be a first-time buyer?
No. None of the options Lendmire arranges requires it, and repeat buyers qualify. The grant has an income test unless a qualifying category applies, but first-time buyer status is not a requirement for any option.
Can I use assistance on a rental or second home?
No. Assistance is for an owner-occupied primary residence only.
What happens to the second when I sell or refinance?
A sale triggers repayment unless the second has already been forgiven. A refinance usually requires the second’s holder to agree to stay behind the new loan, and some providers must approve the steps. Ask for the second’s payoff and subordination terms before you commit.
Next Steps
If you are buying a primary home and want to see whether a down payment assistance option fits your file, Lendmire can help you compare the grant, forgivable and repayable structures alongside an FHA, USDA or HUD-184 first mortgage. Lendmire is a mortgage broker licensed for consumer lending in 16 states. It arranges these options for the home you will live in, through wholesale lenders, subject to program guidelines and full underwriting. This is not a commitment to lend.
About Lendmire
As a mortgage broker (NMLS# 2371349), Lendmire helps home buyers in 16 states pair an FHA, USDA or HUD-184 first lien with a down payment assistance option arranged through wholesale lenders. Lendmire is never the lender; program terms are set by the lender and the agency guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. USDA
2. Fannie Mae Selling Guide, Community Seconds Loan Eligibility
This article is part of Lendmire’s down payment assistance program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Smart Ways to Start Saving for a Down Payment · FHA Loan CLTV and Second Lien Rules With Down Payment Assistance · How To Qualify For Down Payment Assistance As A Repeat Buyer
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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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.