Complete Mortgage Glossary
33+ essential mortgage and real estate terms with clear definitions
All terms are organized alphabetically below. Use your browser's search (Ctrl+F) to find specific terms quickly.
Adjustable Rate Mortgage (ARM)
A mortgage loan where the interest rate can change periodically based on market conditions. Common types include 5/1, 7/1, and 10/1 ARMs.
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Amortization
The process of paying off a debt over time through regular payments. Each payment covers both principal and interest, with the principal portion increasing over time.
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Annual Percentage Rate (APR)
The yearly cost of a mortgage including interest rate, points, broker fees, and other costs. APR provides a more complete picture of loan costs than interest rate alone.
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Appraisal
A professional estimate of a property's market value conducted by a licensed appraiser. Required by lenders to ensure the loan amount doesn't exceed property value.
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Closing
The final step in the home buying process where ownership is officially transferred from seller to buyer and the mortgage loan is finalized.
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Closing Costs
Fees and expenses paid at closing, typically 2-5% of the loan amount. Includes appraisal fees, title insurance, attorney fees, and lender charges.
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Conforming Loan
A mortgage that meets the criteria to be purchased by Fannie Mae or Freddie Mac. For 2025, the limit is $1,089,300 in Orange County.
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Conventional Loan
A mortgage not insured by a government agency (FHA, VA, USDA). Typically requires higher credit scores but offers competitive rates and terms.
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Credit Score
A numerical representation of creditworthiness, typically ranging from 300-850. Higher scores generally qualify for better mortgage rates and terms.
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Debt-to-Income Ratio (DTI)
The percentage of gross monthly income that goes toward debt payments. Most lenders prefer DTI below 43% for conventional loans.
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Down Payment
The upfront cash payment made when purchasing a home, typically expressed as a percentage of the purchase price. Can range from 0% to 20% or more.
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Earnest Money
A deposit made to demonstrate serious intent to purchase a home. Typically 1-3% of purchase price, held in escrow and applied toward down payment at closing.
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Escrow
A neutral third party that holds funds or documents until certain conditions are met. Also refers to the account for property taxes and insurance payments.
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FHA Loan
A mortgage insured by the Federal Housing Administration, allowing lower down payments (3.5%) and credit scores (580+) but requiring mortgage insurance.
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Fixed Rate Mortgage
A mortgage where the interest rate remains the same for the entire loan term, providing predictable monthly payments.
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HELOC
Home Equity Line of Credit - a revolving credit line secured by home equity, allowing borrowers to access funds as needed up to a credit limit.
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Home Equity
The difference between a home's current market value and the outstanding mortgage balance. Equity builds through payments and property appreciation.
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Interest Rate
The percentage charged by a lender for borrowing money, typically expressed as an annual rate. Affects monthly payment amount.
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Jumbo Loan
A mortgage that exceeds conforming loan limits. In Orange County for 2025, any loan over $1,089,300 is considered jumbo.
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Loan-to-Value Ratio (LTV)
The percentage of a property's value that is financed. Calculated by dividing loan amount by property value. Lower LTV typically means better rates.
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Mortgage Insurance
Insurance that protects lenders if borrowers default. Required for conventional loans with less than 20% down (PMI) and all FHA loans (MIP).
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NMLS
Nationwide Multistate Licensing System - the system that licenses and tracks mortgage loan originators. All MLOs must have an NMLS number.
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Origination Fee
A fee charged by lenders for processing a mortgage application, typically 0.5% to 1% of the loan amount.
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PITI
Principal, Interest, Taxes, and Insurance - the four components of a typical monthly mortgage payment.
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Points
Fees paid to lenders at closing to reduce the interest rate. One point equals 1% of the loan amount and typically reduces the rate by 0.25%.
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Pre-approval
A lender's conditional commitment to loan money based on preliminary review of finances. More reliable than pre-qualification.
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Principal
The original amount of money borrowed or the remaining balance on a loan, not including interest.
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Private Mortgage Insurance (PMI)
Insurance required on conventional loans with less than 20% down payment. Can be removed once equity reaches 20%.
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Rate Lock
An agreement that guarantees a specific interest rate for a certain period, typically 30-60 days, protecting against rate increases during processing.
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Refinancing
Replacing an existing mortgage with a new loan, typically to get a better interest rate, change loan terms, or access home equity.
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Title Insurance
Insurance that protects buyers and lenders against losses from defects in property title, such as liens or ownership disputes.
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Underwriting
The process where lenders evaluate a borrower's creditworthiness and the property's value to determine loan approval and terms.
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VA Loan
A mortgage guaranteed by the Department of Veterans Affairs for eligible veterans, active military, and surviving spouses. Offers 0% down payment.
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Quick Reference Guide
Essential terms every home buyer should know