A preapproval letter is the difference between house hunting and house hoping. Sellers treat an offer backed by one very differently from an offer backed by a browser tab full of listings and a rough guess about what you can afford. If you’re buying your first home, the lender who writes that letter shapes your rate, your closing timeline, and how much leverage you carry into negotiations.
Here’s how to sort through the mortgage preapproval lenders competing for your business, and what to check before you hand over your Social Security number.
Preapproval and Prequalification Are Not the Same Letter
Plenty of websites will “prequalify” you in three minutes. That’s an estimate based on what you type into a form. A preapproval goes further. The lender pulls your credit, verifies income with pay stubs and W-2s or tax returns, reviews asset statements, and at the stronger institutions runs the file past an underwriter. What comes out is a conditional commitment for a specific loan amount, say $268,000 on a $298,000 purchase with 10% down.
That gap matters at the offer table. Listing agents in competitive markets routinely call the number printed on the letter to confirm it’s real. A prequalification from an online calculator doesn’t survive that call.
Where First-Time Buyers Actually Find Preapproval Lenders
Three channels cover nearly everyone. Each has trade-offs worth understanding before you apply.
Credit unions and community banks
Member-owned institutions often keep loans in-house, which translates to more flexibility on unusual income: self-employment, a recent job change, gig work. They also tend to charge fewer junk fees. Membership frequently requires only a small deposit or a qualifying employer. Reading a full breakdown like this America First Credit Union review shows what membership actually gets you in practice, from account requirements to loan products.
Online lenders and national banks
Speed is the pitch. Some online lenders return a verified preapproval in under 24 hours and publish rates without a phone call. Check who funds the loan and who services it afterward, because the company you apply with isn’t always the one collecting payments in year five. A shop like SoFi home loans may bundle member perks with fast underwriting, but you still need two other quotes to know whether the pricing is competitive.
Mortgage brokers
A broker shops your file with multiple wholesale lenders and is often the best route when your situation has a wrinkle: a bankruptcy four years back, one weak year of 1099 income, a gifted down payment. Ask how the broker is paid, whether borrower-paid, lender-paid, or a mix. That answer changes the rate you see.
Collect Three Quotes and Compare the Right Numbers
The interest rate gets all the attention. It isn’t the whole cost. Line up competing offers side by side and check these:
- Rate and APR. The APR folds fees in, so a low rate paired with a 1.5-point origination charge can lose to a slightly higher rate with none.
- Origination and underwriting fees. Usually $500 to $1,800 combined.
- Discount points. One point costs 1% of the loan and typically trims about 0.25% off the rate. Run the breakeven math against how long you expect to stay.
- Mortgage insurance. Required below 20% down. Private mortgage insurance on a conventional loan runs roughly 0.3% to 1.5% of the loan annually; FHA loans carry both an upfront and an annual premium.
- Estimated closing costs. Ask for the official Loan Estimate, which lenders must send within three business days of your application.
The spread between offers is wider than most buyers expect. On a $280,000 loan, a 0.375% difference in rate adds about $70 a month. Held for the full 30-year term, that’s more than $25,000.
Applying with several lenders won’t wreck your credit either. Scoring models group mortgage inquiries made within a short window into a single inquiry: 14 days under the classic FICO formula, up to 45 days under newer versions.
Documents to Have Ready Before You Apply
- Last two years of W-2s and federal tax returns, all pages and schedules
- 30 days of recent pay stubs
- Two months of statements for every account holding down payment funds
- Photo ID and, if you rent, your landlord’s contact information
- Gift letters for any family money, plus proof it landed in your account
- If self-employed: 1099s, a year-to-date profit and loss statement, and business returns
Save everything as PDFs in a single folder. Files that arrive complete on day one close weeks faster than files that trickle in over three weeks of email back-and-forth.
Questions Worth Asking Before You Commit
Every lender sounds confident on the phone. Differences show up in the details, so press on these:
- What’s your average number of days from signed contract to closing?
- Will a human underwriter review my file before the preapproval is issued, or is it fully automated?
- Do you service the loan yourself, or sell it shortly after closing?
- What’s your process if the appraisal comes in below the contract price?
- Do you offer a rate lock now, and what does a float-down option cost?
Large regional banks vary widely on those answers. Our Flagstar Bank mortgage review and this M&T Bank mortgage guide both break down the specifics worth raising before you apply at an institution that size, and the same checklist applies almost anywhere.
If Your Credit Isn’t Where You Want It
FHA loans allow scores as low as 580 with 3.5% down, or 500 with 10% down. Conventional loans typically need 620, though plenty of lenders layer stricter rules on top. If your score sits in the low 600s, expect to spend real time filtering out the companies that advertise aggressively and then quote something else entirely. This guide to finding mortgage lenders for poor credit without getting buried in fees explains how to spot that pattern before you pay for an application.
The Approved Amount Is Not Your Budget
Lenders calculate what you can borrow, not what you should spend. A $340,000 preapproval on $95,000 of household income can leave you with a payment eating 40% of take-home pay once you add property taxes, homeowners insurance, HOA dues, and a maintenance reserve of roughly 1% of the home’s value each year.
Work your own number first. Pick the monthly payment you’d genuinely be comfortable with, subtract taxes and insurance, and back into a loan amount. Then ask your lender to cap the preapproval at that figure. It removes the temptation to stretch into a house that owns you instead of the other way around.
Keeping the Letter Alive Until Closing
Preapprovals usually expire in 60 to 90 days, and the rate attached to one isn’t locked until you have a signed contract. Some lenders sell a longer lock for a fee, or a float-down if rates fall before closing. Expect to refresh pay stubs and bank statements if your search drags into a third month.
Three things quietly sink deals between preapproval and closing: opening a new credit card or financing furniture for the new place, switching jobs (especially from salary to commission), and moving money between accounts without a paper trail. Call your loan officer before any of that happens. A two-minute conversation beats a surprise underwriting condition forty-eight hours before you’re supposed to sign.
When you’re ready to write an offer, ask your lender to reissue the letter with the property address on it. Some listing agents want that specificity, and it signals a file that’s already been reviewed rather than one that starts from scratch the moment a contract lands. That’s the version of you a seller wants to see across the table.