7 First-Time Homebuyer Mistakes to Avoid in Washington State (And How to Dodge Them)
Reviewed by Peter Irungu, NMLS #2751063 | Last updated October 23, 2026

Buying your first home in Washington State is exciting, but it's also the biggest financial decision most people will ever make. After helping hundreds of first-time buyers across Pierce County and King County, I've seen the same handful of mistakes trip up even the smartest, most prepared people.
The good news? Every one of these mistakes is avoidable if you know what to watch for. Let me walk you through the seven I see most often and exactly how to sidestep each one.
1. Shopping Before Getting Pre-Approved
This is the number-one mistake I see, and it costs buyers more than any other. You find a house you love, you make an offer, and the seller asks for your pre-approval letter. You don't have one. In a competitive market like Puyallup or Tacoma, that offer goes straight to the bottom of the pile.
A pre-approval tells sellers you're serious and financially ready. Without it, you're just a person who likes their house. Get pre-approved before you tour a single property it takes minutes and there's no credit pull required to start the conversation.
2. Underestimating Closing Costs
Most first-time buyers save for their down payment and forget that closing costs are a separate expense entirely. In Washington, closing costs typically run 2-5% of the loan amount on top of your down payment.
On a $500,000 home with 10% down, that's another $10,000-$25,000 in closing costs. I help buyers map out the full cash-to-close picture early so there are no surprises at the closing table.
3. Ignoring First-Time Buyer Programs
Washington State offers down payment assistance programs that many first-time buyers never hear about. Some provide grants that never need to be repaid. Others offer low-interest second mortgages that can dramatically reduce your out-of-pocket cost.
If you're a first-time buyer in Pierce County or King County, ask me about the Home Advantage program and other WSHFC options. You may qualify for help you didn't know existed.
4. Choosing the Wrong Loan Type
FHA, conventional, VA, USDA the options can feel overwhelming. Each has different credit requirements, down payment minimums, and mortgage insurance rules. The cheapest option on paper isn't always the cheapest in practice.
I run a side-by-side comparison for every buyer so you can see the real monthly cost of each loan type for your specific situation. No guessing, no assumptions just the numbers.
5. Forgetting About Property Taxes and Insurance
Your monthly payment isn't just principal and interest. Property taxes in Pierce County vary by neighborhood and can add hundreds of dollars to your monthly cost. Homeowners insurance is another line item first-time buyers often overlook.
I include taxes and insurance in every affordability estimate so you know your true monthly cost before you fall in love with a house.
6. Making Big Financial Moves Before Closing
Did you know that opening a new credit card, financing a car, or even changing jobs right before closing can derail your loan? Lenders re-verify your credit and employment right before funding. Any change can delay or kill the deal.
Rule of thumb: from the day you apply to the day you close, keep your finances quiet. No new credit, no big purchases, no job changes if you can help it.
7. Going It Alone
The biggest mistake of all is trying to navigate this process without a guide. A good loan officer does more than process your application they help you choose the right loan, time your purchase, negotiate with confidence, and avoid every mistake on this list.
I work with first-time buyers across Washington State every day. Let's talk about your goals and build a plan that gets you into the right home, the right way.
Have questions about your mortgage?
Book a free 15-minute call with Peter no credit pull required.
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