Updated July 24, 2026
Choosing among mortgage options involves more than comparing interest rates. The right home loan depends on your credit profile, available cash, monthly budget, tolerance for possible payment changes, plans for the home, and even the characteristics of the property itself.
A loan with the lowest initial rate may not have the lowest overall cost or be the best fit over time. Before choosing, compare how each option affects your upfront costs, monthly payment, and future flexibility.
This guide explains the main factors that shape your mortgage choices, how to evaluate lenders, how to prepare before applying, and when mortgage points or buydowns may make sense.
If you encounter unfamiliar terminology, the Consumer Financial Protection Bureau’s mortgage key terms can help.
1. Credit Profile
Your credit profile can affect whether you qualify for a mortgage, which loan options are available, and the interest rate you are offered. Lenders review both your credit reports and the scores calculated from them, so the three-digit number is only part of the picture.
There is no single minimum credit score that applies to every mortgage. Requirements vary by loan program, lender, down payment, property type, and the overall strength of your application. A lender may also impose stricter standards than the underlying loan program requires.
For borrowers who meet the programs’ other requirements, FHA- and VA-backed loans may provide options when conventional financing is not available or competitive. FHA financing permits lower credit-score thresholds than many conventional programs, while the VA itself does not set a minimum credit score for VA-backed loans. Approval is not automatic, however. Lenders evaluate the complete application and may apply stricter credit standards of their own.
The score a mortgage lender uses may differ from the score shown by your bank or a consumer credit app. Review your reports early through AnnualCreditReport.com and dispute any errors before applying.
Before making changes solely to improve your credit score, ask a lender how those actions could affect your application. Correcting inaccurate information can also take time, so review your credit reports well before beginning your home search.
2. Income, Debt, and a Manageable Monthly Payment
Your income and recurring debt affect whether you qualify for a mortgage and how much you may be able to borrow. Lenders also consider whether your income can be documented and is reasonably expected to continue. A recent job change, variable pay, or self-employment may require additional review, but it does not automatically prevent approval.
One key measure is your debt-to-income (DTI) ratio, which compares your monthly debt payments with your gross monthly income. The calculation generally includes the proposed housing payment plus recurring obligations such as car loans, student loans, credit cards, and other required debt payments.
Your proposed housing payment can include more than principal and interest. Property taxes, homeowners insurance, mortgage insurance, and homeowners association dues can all affect qualification. Because those costs vary by property, two homes with the same price can produce different total monthly payments and different qualification results.
There is no single DTI limit that applies to every borrower. The loan program, lender, underwriting method, credit profile, cash reserves, and other factors can all affect the acceptable range.
Mortgage qualification and personal affordability are not the same. A lender may approve a payment that leaves too little room for utilities, maintenance, repairs, transportation, savings, and other priorities. A preapproval helps establish a likely borrowing limit, but you still need to decide what monthly payment fits your budget comfortably.
3. Down Payment, Closing Costs, and Cash Reserves
The amount you put down affects your loan options, the amount you borrow, your monthly payment, and whether mortgage insurance applies. Many mortgages do not require a 20% down payment. However, a larger down payment can reduce the loan balance and may improve your loan terms or help with qualification.
For the same purchase price, interest rate, and loan term, a smaller down payment means a larger mortgage, a higher monthly principal-and-interest payment, and more interest paid over the life of the loan.
Your down payment is only part of the cash needed to buy a home. Closing costs can include lender charges, appraisal and title fees, escrow costs, and prepaid property taxes and insurance. You may also need money for inspections, moving expenses, repairs, or improvements after closing.
Avoid using every available dollar for the purchase. Some loans require cash reserves, and keeping money available can help you manage unexpected expenses after you move in. The goal is to balance the financing benefits of a larger down payment with the need to retain cash for closing and future expenses.
Qualified borrowers may have low- or no-down-payment options, including FHA and VA financing. Eligibility, lender requirements, and the property itself can affect whether those programs are available. The next section explains the main loan types.
4. Loan Type
The mortgage categories most relevant to San Diego buyers include conventional conforming loans, FHA and VA loans, and jumbo loans. Each has different eligibility, cost, underwriting, and property requirements.
Conventional loans. These loans are not insured or guaranteed by the federal government. Conforming loans follow Fannie Mae and Freddie Mac loan limits and underwriting standards. Credit, down payment, reserves, occupancy, and property type can all affect the terms offered.
FHA loans. These government-insured loans can permit smaller down payments and more flexible credit qualification than many conventional options. They require mortgage insurance, and the property must meet FHA eligibility and condition standards.
VA loans. Eligible service members, veterans, and certain surviving spouses may qualify with no down payment and no monthly mortgage insurance. A one-time funding fee may apply, and lenders still review credit, income, and the property.
Jumbo loans. These loans exceed the applicable conforming loan limit. The limit depends on the county and number of units, and it changes annually. Jumbo lenders set their own requirements, which may include stronger credit, larger reserves, and more documentation.
The property itself can narrow the available options. Condominiums, two- to four-unit properties, manufactured homes, investment properties, mixed-use buildings, and homes needing major repairs may face additional requirements. Some properties may require specialized financing.
A lender should review both your financial profile and the property before you rely on a particular loan program.
5. Mortgage Term
The mortgage term determines how long you have to repay the loan. Common choices include 15- and 30-year terms, although some lenders offer other options.
A shorter term usually requires a higher monthly principal-and-interest payment, even when it carries a lower interest rate. In return, you repay the balance faster and generally pay less interest over the life of the loan.
A longer term typically lowers the required monthly principal-and-interest payment, but repayment takes longer and total interest is usually higher. The lower payment may leave more room for property taxes, insurance, homeowners association dues, maintenance, savings, and other financial priorities.
Do not choose a term based only on the lowest payment or the lowest total interest. Consider whether the required payment leaves enough flexibility for other expenses and whether you could continue making it if your circumstances changed.
6. Fixed or Adjustable Rate
A fixed-rate mortgage keeps the same interest rate for the full loan term. The principal-and-interest payment does not change, although property taxes, insurance, mortgage insurance, or homeowners association dues may increase.
An adjustable-rate mortgage, or ARM, typically has a fixed rate for an initial period. After that, the rate can change at scheduled intervals based on the loan’s index, margin, and adjustment limits. The payment may rise or fall as the rate changes.
An ARM may start with a lower rate, but the initial savings should justify the risk, and your budget should have room for the payment to increase later.
Do not rely solely on plans to sell or refinance before the first adjustment. Your circumstances, property value, lending standards, and market rates could change. Before choosing an ARM, review when adjustments begin, how often they occur, and the limits on each adjustment and over the life of the loan.
A fixed rate provides more predictable principal-and-interest payments, while an ARM involves more uncertainty after the initial fixed-rate period. The better choice depends on the actual loan offers, your budget, and how much payment risk you are prepared to assume.
7. Compare Lenders, Rates, and Fees
Mortgage rates and fees can vary among lenders, so compare more than one offer. The lowest interest rate is not always the least expensive option because it may require points or come with higher lender fees.
For a fair comparison, ask for written Loan Estimates based on the same loan type, loan amount, down payment, rate-lock period, and points. Request them close together because mortgage rates can change quickly.
Review the interest rate, monthly payment, lender fees, points or credits, and total cash needed at closing. Also confirm whether the rate is locked, how long the lock lasts, and whether extending it would cost more.
Cost is not the only consideration. The lender should communicate clearly, answer questions promptly, and be able to meet the closing deadline. If you work with a mortgage broker, ask how the broker is compensated and which lenders were considered.
8. Mortgage Points and Buydowns
Discount points are upfront fees paid to the lender in exchange for a lower interest rate. One point equals 1% of the loan amount, but the amount the rate drops varies by lender and market conditions.
Whether points make sense depends partly on how long you expect to keep the loan. Compare the same mortgage with and without points and determine how long the monthly savings would take to recover the upfront cost.
A temporary buydown lowers the rate the borrower pays during the first one, two, or three years of the loan. The payment then increases to the full amount when the buydown ends. The initial savings can help, but your budget should support the full payment.
For a more detailed explanation, see What Is a Mortgage Buydown?
9. Get Preapproved Before You Start Your Home Search
Buyers should obtain a mortgage preapproval before they begin seriously looking for a home. This helps them know whether they are likely to qualify for the homes they are considering and gives them an estimate of their monthly payment and the cash they will need.
A preapproval also helps you decide whether the purchase fits your own budget, which may be lower than the amount a lender is willing to approve.
Start preparing well before your home search. Review your credit reports early so you have time to correct errors, and gather current documents showing your income, assets, debts, and available funds.
Ask your lender before paying down debt, closing accounts, transferring money, accepting gift funds, or making other financial changes. Find out how the change could affect your qualification and what documentation you will need. Keep records for gift funds, large deposits, and transfers between accounts.
After receiving a preapproval, avoid opening new credit accounts, financing purchases, or making employment changes without first speaking with your lender. Respond promptly to document requests and provide updated information when needed.
A preapproval is not final loan approval. The lender will still review the property, appraisal, title, updated financial information, and other conditions before closing.
Choosing the Right Mortgage
The right mortgage depends on your finances, the property, and how the loan fits your long-term plans. Compare your options carefully rather than focusing only on the lowest rate or payment.
I work with experienced lenders who can explain available programs and help you evaluate the costs. Contact me if you would like a lender referral or help planning your home search.