A 1-4 Family Rider is a legal attachment to your mortgage, published by Fannie Mae and Freddie Mac as Form 3170, that lenders require when the loan is secured by a one- to four-unit investment property or a two- to four-unit property you live in. It modifies the standard mortgage to account for the fact that tenants will occupy the property and generate rental income. The two provisions that matter most: it assigns your rental income to the lender as additional collateral, and it removes the standard requirement that you occupy the home as your primary residence.
When Lenders Require It
The Multistate 1-4 Family Rider is required for any mortgage secured by a one- to four-unit investment property or a two- to four-unit principal residence.1Fannie Mae. Riders and Addenda A duplex where you live in one half and rent the other gets the rider. So does a fourplex you own purely for rental income. A single-family home you buy to live in with a conventional mortgage does not.
You sign the rider at closing alongside the note and the deed of trust, and it becomes part of the security instrument. Every obligation it creates is as enforceable as the mortgage itself. It isn’t optional for the lender either; the loan can’t be sold to Fannie Mae or Freddie Mac without it.
What the Rider Changes About Your Mortgage
Your Rents Are Assigned to the Lender
The rider’s headline provision is an assignment of rents. By signing, you transfer your right to collect rental income from the property to the lender. The rider structures this as an absolute assignment, meaning the lender technically owns the rent stream from closing day forward.2Deephaven Mortgage. 1-4 Family Rider (Assignment of Rents)
That sounds alarming, but the lender immediately grants you a revocable license to keep collecting rent and using it normally. You pay the mortgage, cover maintenance, and keep what’s left. The license stays in place as long as the loan is current, and most borrowers never notice the assignment exists. It becomes consequential only on default.
The Owner-Occupancy Requirement Is Removed
Standard residential mortgages require you to move into the property as a primary residence within a set period after closing and continue living there. The 1-4 Family Rider deletes that occupancy covenant. Without this deletion, an investor leasing the property to tenants would be in immediate breach of the loan.
For a two- to four-unit property where you do live in one unit, the rider still applies because the other units go to tenants, which raises the same lender concerns about rental income and third-party occupants.
You Must Carry Rent Loss Insurance
The rider requires rent loss insurance on top of the hazard coverage your mortgage already mandates.2Deephaven Mortgage. 1-4 Family Rider (Assignment of Rents) Also called loss-of-rents or fair rental value coverage, it reimburses you for lost rent when a covered event like a fire or storm makes the units uninhabitable. Many landlord policies include this as an optional endorsement; if yours doesn’t, you’ll need to add it before closing or you’ll be in default of the rider from day one. Your lender will verify coverage at closing and may ask again at renewal.
You Can’t Change the Property’s Use or Zoning
The rider prohibits you from changing the property’s zoning classification or its use without the lender’s written consent. Converting a residential unit into commercial space, for example, would violate the rider even if the local zoning authority approved the change. The lender underwrote the collateral as residential rental property, and any shift could affect value in ways that weren’t priced into the loan.
You also have to comply with all local building codes, health regulations, and municipal ordinances. If a local authority issues a code violation or a condemnation notice, you must notify the lender right away. Letting violations accumulate can itself trigger a default.
What Happens If You Default
If you default, the lender can revoke your license to collect rents immediately. The lender, or a court-appointed receiver, then collects payments directly from your tenants. Once tenants receive written notice to redirect their rent, they’re obligated to comply and have no duty to verify whether a default actually occurred.
A receiver uses the collected income to cover property expenses like maintenance, insurance, and management fees. The lender can apply its collections first to the costs of taking control of the property before applying anything to the loan balance. Collecting rents after a default does not cure the default or stop a foreclosure. If the loan has an acceleration clause, the lender may demand the full remaining balance at once, though acceleration is a choice the lender makes rather than something that triggers automatically, and borrowers who catch up on missed payments before the lender accelerates may be able to preserve the loan in some jurisdictions.
Transferring the Property to an LLC
Many investors want to move rental properties into an LLC for liability protection. The deed of trust contains a due-on-sale clause letting the lender demand full repayment on a transfer of ownership. Federal law carves out exceptions for certain transfers, including transfers into a trust where the borrower remains a beneficiary, transfers to a spouse or children, and transfers resulting from inheritance.3Office of the Law Revision Counsel. 12 US Code 1701j-3 – Preemption of Due-on-Sale Prohibitions Transfers to an LLC are not on that list.
Fannie Mae has its own policy that softens this restriction. For loans Fannie Mae purchased or securitized on or after June 1, 2016, the servicer may allow a transfer to an LLC as long as the original borrower controls the LLC or owns a majority interest in it.4Fannie Mae. Allowable Exemptions Due to the Type of Transfer One catch: if you later want to refinance, you’ll need to transfer the property back into your personal name, because Fannie Mae’s underwriting guidelines require a natural person on the loan. Check with your servicer before any transfer. Not every loan is held by Fannie Mae, and other investors may enforce the due-on-sale clause without this exception.
Don’t Try to Dodge the Rider by Claiming Occupancy
Some borrowers are tempted to claim they’ll live in a property to qualify for a primary-residence mortgage with a lower rate and smaller down payment, then rent it out. That is occupancy fraud. Signing a false occupancy affidavit is a federal offense under the bank fraud statute, carrying penalties of up to $1,000,000 in fines, up to 30 years in prison, or both.5Office of the Law Revision Counsel. 18 US Code 1344 – Bank Fraud
Federal prosecution of individual borrowers is rare, but the more common consequence is the lender calling the loan due or forcing a refinance at a higher rate once the misrepresentation is discovered. Fannie Mae and Freddie Mac audit for occupancy discrepancies, and signals like an insurance policy listing a different mailing address or rent deposits appearing on a tax return can trigger a review.
Investment-property loans do cost more up front. Fannie Mae’s current guidelines set a maximum loan-to-value ratio of 85% for a single-unit investment property purchase and 75% for a two- to four-unit purchase, so you’ll need 15% to 25% down depending on the property.6Fannie Mae. Eligibility Matrix The rate will be higher than on a primary-residence loan too. Real costs, but far cheaper than the legal exposure of lying about your intent.
The Portfolio Cap to Keep in Mind
If you’re building a rental portfolio, Fannie Mae caps the total number of financed properties a single borrower can hold. For investment properties and second homes, the current limit is 10 financed properties when the loan runs through Desktop Underwriter.7Fannie Mae. Multiple Financed Properties for the Same Borrower Your primary residence counts toward that total if it carries a mortgage. Once you hit the cap, you move into portfolio lenders, commercial financing, or other non-agency products, and those loans won’t use the standard 1-4 Family Rider.