Your first mortgage may restrict junior liens. What the standard 1-4 Family Rider says, why owner-occupant protections do not cover rentals, and what to check.
You can often put a second lien behind a DSCR or conventional first mortgage on a rental, but you may need the first lender's written permission. The permission rule sits in the first lender's own documents, and the usual federal protection for borrowers does not reach investment property. Read the first mortgage's documents before you apply for the second.
Start with the standard 1-4 Family Rider, which Fannie Mae requires on the one- to four-unit investment loans it buys and which some other lenders also use. Fannie Mae's Selling Guide says the rider is "required for a mortgage secured by a one- to four-unit investment property" (B8-4-01). Its covenant on subordinate liens reads: "Except as permitted by federal law, Borrower shall not allow any lien inferior to the Security Instrument to be perfected against the Property without Lender's prior written permission."
That covenant is standard 1-4 Family Rider text (Fannie Mae Form 3170). We have not read every first-lien lender's security instrument, so we cannot say every DSCR or conventional first carries the same clause. Yours might. It might not. The only way to know is to read it.
A federal law, Garn-St Germain, limits when a lender can call a loan due because of certain transfers. One item on its list is creating a lien subordinate to the lender's own (12 U.S.C. 1701j-3(d)(1)). The implementing rule narrows that list to "any loan on the security of a home occupied or to be occupied by the borrower" (12 CFR 191.5(b)).
A rental is a non-owner-occupied property. On a rental, the first lender keeps its contractual right to object to a second lien. It is wrong to assume you do not need the first lender's permission. Ask for it, in writing, if the documents call for it.
The second-lien lender counts the first in the math. Combined loan-to-value includes every lien on the property (Fannie Mae B2-1.2-04). A $400,000 rental at an 80% cap supports $320,000 in total debt ($400,000 x 80%). After a $180,000 first, the second can be up to $140,000 ($320,000 - $180,000). See CLTV explained for investment property and the DSCR second mortgage guide, or second mortgage vs HELOC on an investment property, for the formula.
Priority generally follows the order of recording. Combined-debt caps exist because the first lender is paid before the second, which is also a reason to keep your first mortgage current.
A new first mortgage is recorded after your existing second. To keep the second in second place, the second-lien holder generally has to sign a resubordination agreement. Fannie Mae's guide says that if subordinate financing is left in place in connection with a first mortgage refinance, Fannie Mae "requires execution and recordation of a resubordination agreement" (B2-1.2-04). Plan for that before you take the second. A refinance of the first usually needs the second lender's cooperation.
Typical terms on the second mortgage program, subject to underwriting: a lump-sum second or a line of credit, a fixed rate from 6.99%, $50,000 to $1,000,000, first or second lien, 660 minimum FICO, up to 80% CLTV on investment properties, minimum 1.00 DSCR, prepayment penalty: 0 to 5 years, 3-4 week close. The property is a 1 to 4 unit non-owner-occupied investment property worth at least $100,000, and the borrower can be an individual or an entity such as an LLC. Every loan is conditional on the borrower and the property. Business purpose only. Not a commitment to lend. Talk to us about your first mortgage's documents before you apply. This guide is general information, not legal advice. Have an attorney read your own loan documents.
Rates, leverage, and timelines mentioned in this guide are typical figures, subject to underwriting and market conditions. Not a commitment to lend. Nothing here is legal, tax, or investment advice.
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