How to Get a Loan from a Bank to Buy a House

For most first-time buyers, the mortgage is the most intimidating part of buying a home. The good news: banks make home loans every day, and the process — while detailed — follows a predictable sequence. Understanding each step before you walk into a branch (or open a lender's website) puts you in control instead of at the mercy of a loan officer's pitch.

This guide walks through exactly what happens when you get a loan from a bank to buy a house, what banks look at before approving you, and how to avoid the mistakes that cost buyers thousands of dollars.

What a Bank Actually Looks at Before Lending You Money

Banks are in the business of managing risk. When you apply for a mortgage, the underwriter is answering one question: how likely is this borrower to repay? The answer comes from four core factors — often called the "Four C's":

Credit — Your FICO score tells the bank how reliably you've managed debt in the past. For a conventional loan, most banks require a minimum score of 620. FHA loans allow scores as low as 580 (with 3.5% down). The higher your score, the lower your rate.

Capacity — This is your debt-to-income ratio (DTI): total monthly debt payments divided by gross monthly income. Banks look at two numbers:

• Front-end ratio: Housing costs (mortgage payment, property taxes, insurance, HOA) should be no more than 28% of gross monthly income.
• Back-end ratio: All monthly debts including housing should be no more than 36–43% of gross income (some programs allow up to 50%).

Capital — The bank wants to see that you have funds for a down payment, closing costs (typically 2–5% of the loan), and ideally 2–3 months of mortgage payments in reserve. Money that has been sitting in your account for 60+ days is "seasoned" and easiest to document.

Collateral — The house itself. The bank will order an appraisal to confirm the home is worth at least as much as you're borrowing.

Step 1: Check and Improve Your Credit Score

Before contacting any lender, pull your free credit reports from AnnualCreditReport.com and review them for errors. Dispute any inaccuracies in writing — errors are more common than most people expect, and even a 20-point score improvement can move you into a better rate tier.

While you're reviewing your credit:

• Pay down revolving balances to below 30% of each card's limit (below 10% is even better)
• Do not open new credit accounts or make large purchases on credit
• Don't close old accounts — length of credit history matters

Credit score thresholds that affect your mortgage rate:

• 760+ — Best rates, lowest fees
• 740–759 — Near-best rates
• 720–739 — Good rates, minor premium
• 680–719 — Decent rates, higher mortgage insurance costs
• 620–679 — Approved but expensive; work on improvement if possible

Step 2: Understand How Much House You Can Afford

Banks will often pre-approve you for more than you should actually borrow. Their maximum is based on what you can technically repay — not on what leaves you financially comfortable.

A practical rule of thumb: your total housing payment (principal, interest, taxes, insurance) should not exceed 25–28% of your take-home pay, not your gross income. The bank uses gross income, but you live on net.

Work out your real numbers before you talk to any lender:

• Monthly gross income × 0.28 = maximum housing payment (bank's guideline)
• Monthly net income × 0.25–0.28 = comfortable housing payment (your reality)

The gap between these two numbers is where buyers get into trouble.

Step 3: Gather Your Documents

Banks will ask for the same core documents regardless of which lender you choose. Getting these organized before you apply speeds up the process significantly and reduces stress.

Income documentation:

• Last 2 years of W-2s (or 1099s if self-employed)
• Last 2 years of federal tax returns (signed)
• Last 30 days of pay stubs
• If self-employed: last 2 years of business tax returns + year-to-date profit and loss statement

Asset documentation:

• Last 60 days of bank statements (all pages, all accounts)
• Investment and retirement account statements
• Documentation of any gift funds (gift letter from donor + proof of transfer)

Identity and residence:

• Government-issued photo ID
• Social Security number
• 2 years of residential history (addresses)

Debts:

• List of all recurring monthly obligations (car payment, student loans, credit cards)

Keep digital copies of everything. You will submit these documents more than once.

Step 4: Get Pre-Approved — Not Just Pre-Qualified

Pre-qualification is an informal estimate based on self-reported information. Pre-approval is a formal underwriting review with verified documents. Sellers take pre-approval letters seriously; pre-qualifications are largely meaningless in a competitive market.

When you apply for pre-approval, the lender pulls a hard credit inquiry. This temporarily reduces your score by a few points. However, if you apply with multiple lenders within a 45-day window, all mortgage inquiries count as a single hard pull — so shop aggressively during that window.

A pre-approval letter specifies:

• Maximum loan amount
• Loan type (conventional, FHA, VA, etc.)
• Expiration date (usually 60–90 days)
• Conditions (typically subject to satisfactory appraisal and no material change in financial status)

Step 5: Compare at Least Three Lenders

This is the step most first-time buyers skip — and it costs them money. Research from Freddie Mac shows that borrowers who get just one additional rate quote save an average of $600–$1,200 per year. Comparing five lenders can save more than $6,000 over the life of the loan.

When comparing loan offers, don't just look at the interest rate. Compare:

• Annual Percentage Rate (APR): The interest rate plus fees expressed as an annual cost. This is the true apples-to-apples comparison.
• Origination fees: Charged by the lender for processing the loan. Can be a flat fee or a percentage of the loan amount.
• Discount points: Prepaid interest to buy down the rate. One point equals 1% of the loan. Before paying points, calculate the breakeven: cost of points ÷ monthly savings = months to break even. If you plan to sell or refinance before breakeven, don't pay points.
• Rate lock terms: How long the rate is guaranteed, and what it costs to extend if closing is delayed.
• Closing timeline: Some lenders close in 21 days; others take 45. Know what your purchase contract requires.

Ask each lender for a Loan Estimate (LE) — this is a standardized three-page document required by law. Page two shows all fees in a comparable format, making it easier to spot differences.

Step 6: Submit a Full Application

Once you've chosen a lender, you'll complete a full mortgage application (the Uniform Residential Loan Application, or Form 1003). This is more detailed than the pre-approval application. Expect to provide the full property address, purchase price, and complete financial picture.

After submission, the lender issues a Loan Estimate within three business days. Review it carefully — this document locks in the lender's fee estimates and sets expectations for closing costs.

Step 7: Survive Underwriting

Underwriting is where the bank officially verifies everything you've provided. The underwriter reviews your file and either approves, suspends (needs more information — called conditions), or denies the application.

Common underwriting conditions:

• Letter of explanation for a large bank deposit or employment gap
• Proof that a gift was truly a gift (not a loan)
• Updated pay stubs or bank statements (if the original ones are now 60+ days old)
• Verification of rent history
• Updated title search

Respond to conditions quickly and thoroughly. Delays in underwriting are usually caused by slow responses from the borrower. Have your documents accessible and check your email frequently during this period.

During underwriting, do not:

• Apply for new credit (car loan, credit card, furniture financing)
• Make large, unusual deposits or withdrawals
• Change jobs
• Co-sign on anyone else's loan

Any of these actions can trigger a re-review and delay or kill your loan.

Step 8: Lock Your Rate

You can lock your rate during pre-approval or after your offer is accepted — but it must be locked before closing. Rate locks typically come in 30, 45, or 60-day increments. Longer locks cost more (the lender charges a premium for carrying rate risk longer).

Lock your rate as soon as you have a signed purchase contract and you're confident in your lender choice. If your closing is delayed beyond the lock period, extending the lock costs money — typically 0.125% to 0.25% of the loan amount per 15-day extension.

Step 9: Prepare for Closing Costs

Before closing day, you'll receive a Closing Disclosure (CD) at least three business days before your scheduled closing. Compare it line-by-line to your Loan Estimate. By law, certain fees cannot increase; others can change within limits.

Typical closing costs on a purchase loan:

• Loan origination fee: 0.5–1% of loan amount
• Appraisal: $400–$700
• Title search and title insurance: $500–$1,500
• Attorney or settlement agent fees: $500–$1,500
• Prepaid interest: Depends on closing date (earlier in the month = more prepaid interest)
• Property tax escrow setup
• Homeowners insurance premium

Total closing costs typically run 2–5% of the loan amount. On a $350,000 loan, that's $7,000–$17,500 in addition to your down payment.

Step 10: Close the Loan

On closing day, you'll sign a large stack of documents — typically 50–100 pages — that legally transfer ownership and establish the mortgage. Bring your government-issued ID and a certified or cashier's check for the exact amount shown on the Closing Disclosure (wire transfers are also accepted by most settlement agents).

After signing, the lender funds the loan and the title company records the deed. You get the keys.

The Most Common Mistake: Not Comparing Enough Lenders

Survey after survey shows that most first-time buyers contact only one or two lenders. In a market where the same borrower can be offered rates that differ by 0.5% or more between lenders, this is an expensive mistake.

The rate difference between the best and worst offer for the same borrower profile can exceed 50 basis points. On a $350,000 loan at 7.0% vs. 6.5%, the payment difference is $117/month — $42,000 over 30 years.

Getting organized before you shop — knowing your credit score, your DTI, your budget, and what documents you need — lets you move quickly when you find a rate worth locking.

A mortgage comparison worksheet helps you track loan offers side-by-side: interest rate, APR, origination fees, discount points, monthly payment, and total cost over your expected hold period. Our Mortgage Worksheet includes a lender comparison table, pre-approval document checklist, rate lock decision guide, and true cost calculators — everything you need to walk into lender conversations prepared and walk out with the best rate available to you.