First Mortgage

A first mortgage is the mortgage recorded in first lien position against a property, giving its holder the highest repayment priority among all secured creditors. If the borrower defaults and the property is sold through foreclosure, the first mortgage holder is paid before any junior lien holders, unsecured creditors, or the borrower. This priority structure is the defining characteristic of a first mortgage and the primary reason first liens trade at a premium in the secondary note market.

How First Lien Priority Works

When a borrower takes out a mortgage, the lender records a lien against the property in the county where it is located. The lien's priority is generally determined by the date it was recorded — first in time, first in right. A first mortgage is the earliest-recorded mortgage lien on the property and therefore sits at the top of the repayment hierarchy.

If additional loans are taken out against the same property — such as a home equity loan or second mortgage — those liens are subordinate to the first. In a foreclosure sale:

1. Property taxes and government assessments are paid first (they have statutory super-priority in most states)
2. The first mortgage balance is satisfied from the remaining proceeds
3. Junior lien holders receive whatever is left — if anything
4. The borrower receives any surplus after all liens are paid

If the sale proceeds are insufficient to cover the first mortgage balance, the junior lien holders are wiped — they recover nothing from the collateral.

First Mortgages vs. Second Mortgages

The distinction between first and second mortgages is not about the loan's original purpose or size — it is entirely about recording priority. A first mortgage could be a purchase-money loan, a refinance, or any other mortgage that holds the senior position.

First Liens as Property-Centric Investments

In the secondary note market, first lien investing is fundamentally a property business. When a borrower defaults on a first mortgage and is unwilling or unable to negotiate a workout, the lien holder's resolution path runs through the real estate. Short sales, deed-in-lieu transactions, and foreclosure are the dominant outcomes.

This property-centric nature has practical consequences for investors:

• Local market knowledge matters. First lien investors benefit from having realtors, attorneys, and contractors in the geographic area where they invest. Managing an REO property or coordinating a short sale requires boots on the ground.
• Property-level costs are your responsibility. As the senior lien holder, you must monitor and pay for forced-place insurance, property taxes, and property preservation when the borrower stops maintaining coverage.
• Collateral valuation is critical. Because your recovery depends on property value, a BPO or appraisal is a required part of due diligence for every first lien acquisition.
• Higher pricing reduces diversification. First liens trade at premiums relative to junior liens, meaning the same capital buys fewer assets and concentrates risk.

When a First Mortgage Loses Priority

A first mortgage is not guaranteed to remain in first position. Several situations can cause a senior lien to lose its priority or face competing claims:

• Property tax liens — Delinquent property taxes can create a lien that takes priority over all mortgages, regardless of recording date. In tax foreclosure states, failure to pay taxes can result in the mortgage being wiped entirely.
• HOA super-liens — In some states, homeowners association liens have limited super-lien priority that can prime the first mortgage.
• Subordination agreements — A first lien holder can voluntarily agree to subordinate their position to a new lien, though this is rare in the secondary market.
• Title defects — Recording errors, missing assignments, or gaps in the chain of title can cloud lien priority and must be resolved during due diligence.

Practical Considerations for Note Investors

For investors evaluating first mortgage notes, the key due diligence questions center on the property:

• What is the current fair market value, and what is the LTV?
• Are property taxes current, or has a tax lien accrued?
• Is the property occupied, vacant, or tenant-occupied?
• What is the condition of the property, and are there code violations?
• What are the foreclosure timelines and costs in the property's state?

First liens remain the most commonly traded asset in the secondary mortgage note market. Their structural priority makes them lower-risk relative to junior liens, but their higher acquisition cost and property management requirements demand a different operational model — one built around local expertise, property valuation precision, and the ability to manage or liquidate real estate when borrower workouts fail.