How to Get Preapproval for a Conventional Loan as a First-Time Buyer

The Quick Read: You apply with a lender, who checks your credit, income, debts and savings, then writes a letter naming the most it is willing to lend. First-time buyers can qualify with as little as 3% down on a primary residence, subject to lender guidelines and full file review. The letter is a strong starting point, not a loan commitment. Appraisal, title review and final underwriting still come after you sign a contract.

What a Conventional Preapproval Actually Is

A conventional preapproval is a lender’s written estimate of how much it will lend you, built on documents it has looked at. “Conventional” means the loan is not backed by a government agency like FHA or VA. Most conventional loans follow guidelines set by Fannie Mae and Freddie Mac, which is why they are also called conforming loans.

The words “prequalification” and “preapproval” get used loosely. Some lenders use the first for a quick estimate and the second for a verified one. Others swap them. So ask what the lender actually checked. This table shows the usual pattern.

Only the last stage means the loan is actually approved. Everything before it carries assumptions, and the letter says so.

Do You Really Need 20% Down?

Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

No. Across the wholesale programs Lendmire places files with, a first-time buyer can borrow up to 97% of the price on a one-unit principal residence with a fixed-rate loan. That is 3% down. Buyers who are not first-timers can go to 95%, which is 5% down. Two- to four-unit homes you live in also reach 95%. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.

“First-time buyer” has a specific meaning here. It means you have had no ownership interest in a residence in the previous three years. Someone who sold a home five years ago may still count. A co-borrower who owns property does not automatically disqualify you, though the program’s first-time-buyer rules decide how that is handled.

The trade-off is mortgage insurance. Any loan above 80% loan-to-value carries it. It protects the lender, not you, and it adds a recurring cost. The good news is that it ends. You can ask to cancel at 80% of the original home value, with a good payment history, no second liens and no drop in value. The servicer must end it automatically at 78%.

If you want to see how the full lineup fits a purchase, Lendmire’s conventional loan programs page lays out the options. The mortgage insurance price depends on your score, down payment and the lender’s pricing. That is why the letter and Loan Estimate matter more than any online average.

One more variation: HomeReady and Home Possible limit income to 80% of area median income. They do not require you to be a first-time buyer.

The Step-by-Step Path to Your Letter

Here is the sequence, from first look to letter in hand.

1. Check your own file first. Pull your credit reports and review them for errors. Add up your monthly debts. The wholesale conventional programs start at a 620 decision score, and a higher score generally improves the options.

2. Decide what payment you want to carry. Do this before any lender tells you a maximum. The two numbers are often far apart.

3. Gather documents. The table below covers the usual set.

4. Apply with more than one lender. Do it within a short stretch, for the credit reasons covered below.

5. Credit pull and automated review. The lender pulls your credit and runs the file through an automated underwriting system. For most conventional files, its finding governs.

6. Underwriter review of documents. A person checks that paystubs, statements and reports match what you entered.

7. Letter issued. It states a maximum loan amount, based on stated assumptions.

After you have a signed contract, the property is appraised, title and insurance are reviewed, and underwriting finalizes with updated documents. None of that is part of preapproval. Plan on it, and do not treat the letter as the finish line.

How Lenders Size Your Preapproval

Your maximum comes from debt-to-income ratio, or DTI. DTI is your total monthly debt payments, including the new housing payment, divided by your gross monthly income. Gross means before taxes.

Here is a modeled illustration, not a real borrower. Say the new housing payment equals 28% of gross monthly income. Add car, student loan and credit card minimums equal to 12%. Total DTI is 40%. That is the number the lender weighs, along with your score, down payment and savings.

The ceiling depends on how the file is underwritten. The Fannie Mae Selling Guide sets different limits for loans reviewed by the automated system and loans underwritten by hand. In the wholesale programs Lendmire works with, the automated total ratio ceiling is 50%. Manually underwritten loans use 36% or 45%, with credit-score and reserve factors that tighten as the ratio climbs. The 43% figure you see online is a common rule of thumb, not an agency limit.

The Fannie Mae Eligibility Matrix pulls these pieces together. It ties minimum score, loan-to-value, reserves and DTI to each other. Strong factors can offset weaker ones. A higher score or more savings can make a higher ratio workable. Still, qualifying at the ceiling is not the same as being comfortable.

The practical point: the maximum on your letter is not a budget. Treat it as a ceiling. Many buyers choose a lower payment than the letter allows, so a repair, a raise-less year or a rising insurance bill does not strain the household.

What to Gather Before You Apply

Lenders verify income and assets so the letter rests on facts. This checklist covers the typical request. Ask your loan officer for the exact list, since needs vary by file.

Income rules have loosened. For many borrowers with fixed base pay, the latest W-2 and paystub now do the job. Older articles still say two years of W-2s for everyone. Self-employed and variable-income borrowers have different documentation, so check with the loan officer before assuming.

Large deposits deserve special care. Lenders want to know where money came from. A deposit with no paper trail can stall a file. Keep your savings in place and keep records for anything that is not a paycheck.

Will Shopping Lenders Hurt Your Credit?

A little, and less than you may fear. A mortgage application usually involves a hard credit pull, which can dip your score slightly. But the CFPB explains that inquiries for the same type of loan, made within a short window, are generally treated as a single inquiry. The window length depends on the scoring model. So the safe move is to keep your applications close together, not spread across months.

The same consumer agency notes that a preapproval does not commit you to using that lender. It also suggests waiting to pick a lender until you have an offer on a home and official Loan Estimates in hand. That is the stage where you can compare the full terms side by side. A letter helps you shop for a home. The Loan Estimate helps you shop for a loan.

Where the Rules Bend

The general path above has exceptions. These are the ones first-time buyers run into most.

Thin or no credit history. The Eligibility Matrix includes exceptions for borrowers with no credit score or too few accounts. These files use alternative credit evidence, such as rent and utility history, and require homeownership education. Expect more paperwork, not a dead end.

Gift funds. Family gifts can generally fund a primary-residence purchase. Expect a signed gift letter and a documented transfer. The giver should not expect repayment.

Homeownership education. For a purchase above 95% loan-to-value where every occupying borrower is a first-timer, at least one must complete a course. Fannie Mae’s 97% loan-to-value options page describes the requirement. HomeReady asks for it from first-time buyers regardless of leverage.

A non-borrower’s income. In certain HomeReady situations, a household member who is not on the loan can help the file reach a higher DTI. This is a narrow exception. Ask before counting on it.

Credit events in your past. The agencies set waiting periods after a bankruptcy, foreclosure or short sale. They run four years from a chapter 7 discharge, seven from a foreclosure and four from a short sale or deed-in-lieu. Documented extenuating circumstances can shorten them.

Raises and new jobs. Future pay increases can sometimes count, but only under tight conditions. If your pay is about to change, tell your loan officer before you apply.

Loan size. Conventional loans must fit under the county’s conforming limit. The limit caps the loan amount, not the home price. A bigger loan moves into jumbo territory, which has its own rules and a higher score floor. Check your county’s number with your loan officer.

Occupancy. Everything here assumes a home you will live in. Second homes and rentals use different leverage limits, and the first-time-buyer path does not apply to them.

Conventional or Government-Backed?

Conventional tends to win when your score is solid and you can accept mortgage insurance that can later be removed. FHA and VA programs can suit buyers with lower scores, less cash or military service. A VA loan can offer no-down-payment financing to eligible borrowers.

The honest way to choose: get a letter for each option and compare how each treats your score, down payment and monthly cost.

Protecting Your Preapproval

The letter reflects your file on the day it was written. Changes can undo it. Before closing, most lenders check your credit again and confirm your job.

Do: keep working at the same job, pay every bill on time, keep savings where they are, and answer lender requests promptly. Don’t: open new cards, finance a car or furniture, co-sign a loan, change jobs without telling your lender, or move large sums between accounts.

If a denial or reduced amount does come, it usually traces to one of a few causes.

Credit fixes take time. Ask your loan officer for a plan with milestones, not just a list of problems.

How to Read Your Letter

Look for four things. First, the maximum loan amount. Second, the loan type and down payment assumed. Third, an expiration date. Fourth, the conditions the lender still needs to clear.

Questions worth asking your loan officer:

• What did you verify, and what did you take on my word?
• What down payment and mortgage insurance assumptions are in this letter?
• What could change the amount before closing?
• When does this letter expire, and how do I renew it?
• Does the amount assume a fixed payment or a certain DTI?

Key Terms Defined

Preapproval: A lender’s written statement, based on verified documents, of the most it is likely to lend you. It is not a loan commitment.

Loan-to-value (LTV): The loan amount as a percentage of the home’s value or price. A 97% LTV means a 3% down payment. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.

Debt-to-income ratio (DTI): Your monthly debt payments, including the new housing payment, divided by your gross monthly income.

Private mortgage insurance (PMI): Insurance that protects the lender when your down payment is under 20%. It cancels at 80% on request and ends automatically at 78%.

Automated underwriting: Software that reviews your credit, income, assets and the property type to give the lender a finding on your file.

Reserves: Savings left after closing, counted in months of housing payments.

Next Steps

If you are buying a home and want to see whether a conventional loan fits your file, Lendmire can help you compare the options and what each one asks of the file. Bring your documents, your target payment and your questions, and compare more than one letter before you shop for a house.

For your own numbers, request a scenario review with Lendmire.

About Lendmire

As a mortgage broker (NMLS# 2371349), Lendmire helps homeowners and home buyers in 16 states with FHA, VA, conventional and jumbo purchase and refinance loans arranged through wholesale lenders. Lendmire is never the lender; program terms are set by the lender and the agency guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Fannie Mae Selling Guide B3-6-02: Debt-to-Income Ratios

2. Fannie Mae Eligibility Matrix

3. CFPB: What kind of credit inquiry has no effect on my credit score?

4. CFPB: What’s the difference between a prequalification letter and a preapproval letter?

5. Fannie Mae: 97% Loan-to-Value Options