Pre-Approval Mistakes That Cost People the House

Getting approved is half the job

I'm Quentin, and I want to tell you the thing that surprises buyers most: getting pre-approved is the easy half. Staying approved — keeping your loan intact from that shiny letter all the way to the keys in your hand — is where good people stumble. And they stumble in avoidable, heartbreaking ways.

I've watched it happen too many times. So let me hand you the list of mistakes that cost folks the house, told plainly, so you can sail right past every one of them.

The golden rule: freeze your finances

Before the specific traps, here's the single principle that prevents all of them. From the moment you're pre-approved until the moment you close, keep your finances boring and frozen. No big moves. No new accounts. No surprises. Underwriters re-check your file right before closing, and they want to see the exact same calm, steady person they approved. Give them that, and you're golden.

Now, the specific landmines.

Mistake #1: Financing anything new

This is the big one, the number-one deal-killer I see. You get pre-approved, you're excited, and you decide to "celebrate" or "get ready" by buying a car, financing new furniture for the home you don't own yet, or opening a store credit card for the appliances.

Don't. Please don't.

A new loan adds a monthly payment, which raises your debt-to-income ratio — possibly past the line you cleared to get approved. A new credit card creates an inquiry and changes your profile. I've seen a single car loan, taken the week before closing, collapse an otherwise perfect deal. The house was lost over a car payment. Wait until after you have the keys. The dealership will still be there.

Ask Jaime: "What if I really need a new car right now?" Then we talk first, before you sign anything. Sometimes there's room; usually there isn't until after closing. The rule is simple: run any new debt past your advisor before you commit. One phone call can save your entire loan.

Mistake #2: Unexplained large deposits

Here's a sneaky one that traps honest people. You sell a motorcycle, your aunt gifts you some help, you cash out a side gig — and you drop a big chunk of money into your account, feeling responsible. Then underwriting sees an unexplained deposit and freezes.

Lenders are required to verify that your down payment money is legitimate and isn't a hidden loan. An undocumented large deposit looks suspicious even when it's perfectly clean. The fix is easy: document everything. Keep the bill of sale, the gift letter, the proof of where it came from. A deposit with a paper trail is no problem. A deposit without one can stall your whole file.

Mistake #3: Changing jobs at the wrong time

Your income's stability is a pillar of your approval. Switching jobs mid-process — even to a better job — can shake that pillar. A new employer means a probationary period, a different pay structure, maybe a gap. Underwriting may need to re-verify everything, which delays or even derails the deal.

If a career move is on the horizon, tell me immediately. Sometimes we can structure around it. Usually the cleanest path is to close first and switch after. A few weeks of patience protects the whole purchase.

Mistake #4: Letting your credit slip

You worked hard to clean up your credit before applying. Now is not the time to let it slide. Don't run your card balances up. Don't miss a payment. Don't let an old bill go to collections because you're distracted by house-hunting. Underwriters often re-pull credit before closing, and a higher balance or a fresh late payment can change your rate — or your approval. Keep paying everything on time, keep those balances low, all the way to the finish.

Mistake #5: Co-signing for someone else

A friend or relative asks you to co-sign a loan right in the middle of your home purchase. Your heart says yes. Your mortgage says please don't. A co-signed debt counts against your DTI as if it were yours, because legally it is. It can shrink your approval at the worst possible moment. Help them after you close.

Mistake #6: Going quiet on your advisor

The final mistake is simply not communicating. Buyers who hide a change, or make a move without asking, are the ones who get blindsided. Buyers who loop me in on everything — every deposit, every life change, every "is this okay?" — sail through. I would a thousand times rather get a quick question than discover a surprise at the closing table.

Keep the house

Here's the whole thing in one breath: pre-approval gets you to the starting line, and discipline gets you across the finish. Freeze your finances. Document your money. Hold your job, hold your credit, and run every change past me first.

Do that, and you won't be one of the sad stories I've watched unfold. You'll be the buyer who got the letter, kept it clean, and walked away with the keys. Let's get you there.