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

The Quick Read: You start by gathering your documents, then ask a lender or broker to review your credit, income, assets and debts. The result is a letter that states how much a lender is willing to lend, based on verified information. It is not a loan commitment. Get it before you shop seriously, because it shows sellers your financing is real and shows you what a lender will actually support.

What Is a Conventional Pre-Approval?

A pre-approval is a letter stating the amount a lender is willing to lend you, up to a set limit and based on assumptions.

You will hear two words: prequalification and preapproval. Lenders use them differently. Some base a prequalification on numbers you report yourself, with nothing checked. They issue a preapproval only after verifying your information. Others use the words almost interchangeably.

So skip the label debate. Ask one question: what did you verify? A strong answer covers credit, income, assets, and whether the file went through automated underwriting.

Do You Actually Need One as a First-Time Buyer?

Technically, no. Practically, yes. Nothing stops you from touring homes without a letter. But once you find one you love, you have very little time to arrange financing. Sellers also take offers more seriously when a letter backs them.

There is a second payoff. The process shows you problems while you can still fix them: a card balance that drags your score, a debt you forgot, or a gift that needs paperwork. Finding those in week one beats finding them mid-contract.

What Lenders Check, and What Proves It

Lenders verify five things. Each has a document that proves it.

Exact income documents vary by lender and by how you earn. Self-employed borrowers should expect to show more history than salaried ones.

As a first-time buyer, you have no mortgage history. That is fine. A clean record of rent payments, plus on-time payments on cards and loans, tells the same story.

How Conventional Underwriting Works

Underwriting is the lender’s review of whether the loan fits the rules. It looks at credit history, income, debt, the property, and the loan purpose together. Strength in one area can offset weakness in another. Across the wholesale programs Lendmire places files with, the automated finding governs most files.

Four numbers matter most.

Credit score. The wholesale conventional programs we work with start at a 620 decision score, and some lenders set a higher floor. Fannie Mae itself removed its fixed 620 minimum for automated casefiles, but lenders and mortgage insurers can still set their own minimums. A manually underwritten loan on an adjustable rate needs 640.

Debt-to-income ratio (DTI). This is your monthly debt payments divided by your gross monthly income. The housing payment counts, including principal, interest, taxes, insurance and any HOA dues. Automated loans can go up to a 50% total ratio under the Fannie Mae Selling Guide. Manually underwritten loans run at 36% or 45%, depending on score and reserves.

Down payment and loan-to-value (LTV). LTV is the loan amount as a percentage of the home’s value. On a one-unit primary residence with a fixed rate, the purchase limit is 97% LTV (3% down) when at least one borrower is a first-time buyer. That means no ownership interest in a home for the previous three years. Otherwise it is 95% LTV (5% down). Two- to four-unit primary residences go to 95%. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.

Reserves. Reserves are the cash left after closing. Stronger reserves can help a borderline file.

All of this is subject to lender guidelines and full file review.

Step by Step: From Credit Check to Letter

1. Pull your own credit reports

Checking your own reports does not hurt your score. Look for errors, old accounts you don’t recognize, and balances you can pay down.

2. Stop opening new credit

Skip the new card and the car loan. The CFPB advises avoiding new credit right before and during the mortgage process. New debt changes your DTI.

3. Talk to two or three lenders or brokers

Do this before you find a house. A broker like Lendmire shops your file across several wholesale lenders instead of one. Either way, compare what each says it would verify and what each Loan Estimate shows.

4. Submit a formal application

This is when the hard credit pull happens. The lender runs your file through automated underwriting and asks for documents.

5. Document everything

For a purchase, expect two months of bank or investment statements, showing the institution and your name. Large deposits get questions. A “large deposit” is a single deposit over 50% of your monthly qualifying income. Have a paper trail ready: a paycheck, a sale receipt, or a gift letter.

6. Receive the letter

It states an amount and its assumptions, such as the down payment and loan type.

Shopping Lenders Without Wrecking Your Score

You can apply with several lenders. Within a short window, multiple mortgage credit checks are recorded as a single inquiry. So cluster your applications. Do not spread them over three months.

Many borrowers feel this hurts them. It rarely does when you cluster. Speaking with a few lenders early is usually worth it.

Where the General Rule Breaks

Here are the edge cases that catch first-timers.

You do not need to have never owned a home for life. The first-time buyer test looks back three years. If you sold a home four years ago, you likely still count.

Income-limited programs are a different lane. HomeReady and Home Possible carry an income limit of 80% of area median income. Some first-time buyers earn too much for them, and the standard 97% option has no income cap.

Education may be required. When every occupying borrower is a first-time buyer, at least one typically completes a homeownership course from a qualified provider.

Mortgage insurance changes the budget. Above 80% LTV, mortgage insurance is required. Published typical annual premiums run 0.58% to 1.86% of the loan balance. That is a range, not a quote. It cancels on request at 80% of the original value if you have a good payment history, no second liens and no drop in value. The servicer must end it automatically at 78%. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

A shaky credit history has waiting periods. After a chapter 7 discharge, the agencies require four years. After a foreclosure, seven. After a short sale or deed-in-lieu, four. Documented extenuating circumstances can shorten these.

Manual underwriting is tighter. If automated underwriting refuses a file, a person can review it by hand. Expect lower ratio limits and more paperwork.

Loan size has a ceiling. Conventional “conforming” loans must stay under a county limit set each year by the FHFA. Above it, the loan is a jumbo. Check the FHFA’s published limits for your county. This article does not quote county figures.

Not buying a primary home? Occupancy decides leverage. Second homes top out at 90% LTV on the purchase programs, so this article stays on the home you will live in. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.

For the program basics, start with Lendmire’s conventional loan programs.

A Walk Through One File

Picture a renter with a steady salary, a mid-600s credit score and a modest card balance. She wants 3% down and has never owned a home. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.

She pulls her reports and pays one card down. She gathers pay stubs, W-2s, two months of statements, and a gift letter from a relative. She applies with three lenders in one week, so the credit checks count as one inquiry.

Automated underwriting reviews the file. Her total ratio lands well under the 50% ceiling. Because she puts under 20% down, mortgage insurance is part of the picture. She completes a homebuyer course because she is a first-time buyer. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.

She gets her letter. Then she does the smart thing: she picks a price below her approved maximum, because the letter says what a lender will allow, not what fits her life.

This is a hypothetical, built to show the sequence.

Reading Your Letter

Look for four things:

1. The approved amount. This is a ceiling.

2. The loan type and down payment assumed. If you plan a different down payment, the letter may not fit.

3. Conditions. Items still needed, such as updated statements.

4. What was verified. Credit only, or credit, income and assets?

A letter is not guaranteed. Final approval depends on the appraisal, title work and a last review of your file.

After the Letter: What Can Undo It

• New debt. If a new debt surfaces before closing, the lender recalculates your DTI. A ratio above 50% on an automated loan, or 45% on a manual one, makes the loan ineligible for Fannie Mae delivery.
• Job or income changes. Tell your lender before you switch.
• Big unexplained deposits. Keep paper trails.
• Large purchases on credit. Wait on the furniture.

Next come the appraisal and title work. Some loans qualify for an appraisal waiver, depending on the automated findings. Otherwise a state-licensed or certified appraiser values the home.

If your approval comes back lower than hoped, the fix is usually simple: pay down balances, add documented reserves, or lower the price target. Then reapply. Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit.

Key Terms Defined

Pre-approval: A letter stating how much a lender is willing to lend, based on verified information. It is not a loan commitment.

LTV (loan-to-value): The loan amount divided by the home’s value, shown as a percentage.

DTI (debt-to-income): Your monthly debt payments divided by your gross monthly income.

Mortgage insurance: Coverage the borrower pays for when the loan is above 80% LTV. It protects the lender, not you. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.

Reserves: Cash and liquid assets you still hold after closing.

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. Nothing here is a commitment to lend.

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

About Lendmire

Lendmire, NMLS# 2371349, is a mortgage brokerage with consumer lending licenses in 16 states. FHA, VA, conventional and jumbo purchase and refinance loans are arranged through wholesale lending partners, and each application is reviewed individually by the lender. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Fannie Mae Selling Guide Announcement SEL-2025-09

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

3. CFPB: What happens when a mortgage lender checks my credit

4. FHFA: Conforming Loan Limit Values