Getting pre-approved for a mortgage does affect your credit, but far less than most buyers expect. A mortgage inquiry typically costs a few points and fades within months. Skipping the pre-approval costs you the house.
The number people are afraid of is smaller than the risk they take by avoiding it.
How much does a mortgage pre-approval lower your score?
A hard inquiry for a mortgage usually costs fewer than five points, and often closer to two or three. The effect fades over a few months and the inquiry drops off your report entirely after two years.
For context, a single late payment can cost dozens of points and stays on your report for seven years. The pre-approval is not the thing that hurts your credit. The car payment you missed in March is.
There is also a difference worth knowing. A pre-qualification is usually a soft inquiry and does not affect your score at all — but it also verifies nothing, which is why sellers do not weigh it heavily. The hard inquiry is what buys you a verified position.
Why three points usually change nothing
Loan programs do not price you by your exact score. They price you by brackets.
To a lender, 660, 662 and 665 are the same borrower. All three sit inside the same tier, and the tier is what determines the program you qualify for, the rate you are quoted, and the mortgage insurance you pay. Nothing changes between them.
That is why the fear does not survive contact with how underwriting actually works. If a mortgage inquiry costs you three points and you land at 662 instead of 665, your terms are identical. Nothing about your loan is different.
The exception is the buyer sitting on the line. If you are at 661 and the bracket begins at 660, three points do matter — and that is exactly the buyer who should get an honest read on where they stand before doing anything, not the buyer who should avoid finding out.
Which is the whole point. The way to know whether you are near a threshold is to have someone look. Avoiding the pre-approval does not protect you from being close to a line. It just keeps you from knowing.
Is it bad to get pre-approved by more than one lender?
No, and this is the part most buyers get wrong.
Credit scoring models treat mortgage shopping as one event. Multiple mortgage inquiries inside a short window — commonly 14 to 45 days depending on the scoring model — count as a single inquiry, not as several. The system is built this way on purpose, so that comparing lenders is not punished.
What that means in practice: comparing three lenders in the same two weeks costs you roughly what comparing one costs. Comparing three lenders across four months does not, because each one falls outside the window from the others.
If you are going to shop, shop close together.
Why a mortgage broker means fewer credit pulls
There is a way to compare far more than three lenders without any of this being a concern, and it is the reason we refer our clients to a mortgage broker rather than a single bank.
A bank can offer you the products that bank sells. A mortgage broker works with many lenders — often more than a hundred — and runs your file against their programs using one credit report. You are not knocking on doors one at a time and authorizing a new pull at each of them. One report, many programs, one conversation.
The practical difference shows up for buyers whose situation is not standard: self-employed income, a thin credit file, a recent change of jobs, a co-signer, an ITIN. A single bank either has a program that fits or it does not, and if it does not, the answer is no. A broker looks across the whole set before answering.
Being told no once is not the same as the answer being no.
You are free to work with any lender you choose. What matters is that whoever you use verifies your file properly before you start writing offers.
How long does a mortgage pre-approval last?
About 90 days, and the limiting document is the credit report itself. Credit reports used for mortgage underwriting have a shelf life, and once yours expires the lender has to pull again and refresh your income documents, because both can change.
That expiration is not a formality. If your pre-approval lapses while you are still looking and the right home lists on a Saturday, you are not in a position to write a competitive offer on Sunday. The letter has to be current when it matters.
It also means timing matters at the front end. A pre-approval pulled the week you started casually browsing may expire before you are ready to buy — which means a second inquiry, and this time not inside the same window as the first.
What actually damages your credit while you are buying
Not the pre-approval. These:
- Opening a credit card, including a store card at checkout
- Financing furniture or appliances for the new house before closing
- Buying or leasing a vehicle
- Paying off and closing an old account, which can shorten your credit history
- Missing any payment on anything
Every one of these has cost buyers a loan between pre-approval and closing. Lenders re-check your credit before funding, and a purchase that made sense in isolation can change your debt-to-income ratio enough to break the file.
The rule for the weeks between approval and keys: change nothing.
What this means for you
The fear is backwards. Buyers avoid the pre-approval to protect a score that, at three points of difference, would have qualified them for exactly the same loan — and then damage it for real by financing a sofa in week three.
If you are within 90 days of being ready, get the pre-approval, use a broker so one credit report does the work of many, and then leave your credit alone until you have the keys.