What to Do Before You Start House Shopping

The single most common way a house-shopping process derails isn’t a bad offer or a bidding war — it’s discovering, mid-contract, that the amount you thought you qualified for isn’t the amount a lender will actually approve. That gap is avoidable, and closing it before you tour a single property is what separates a smooth process from a stressful one.

Get preapproved, not just prequalified

These two terms get used interchangeably in casual conversation, and they shouldn’t be. Prequalification is a fast, informal estimate based on numbers you self-report — no credit pull, no document verification, no real commitment from the lender. Preapproval means a lender has actually pulled your credit, reviewed your income and asset documentation, and issued a conditional approval letter for a specific amount.

Worked example of why this matters: a buyer self-reports $150,000 in household income during an informal prequalification chat and gets told they likely qualify for around $450,000. During formal preapproval, the underwriter excludes $30,000/month… rather, excludes undocumented foreign income (per the DTI documentation requirements) that wasn’t properly supported with 2 years of foreign tax returns, dropping qualifying income to $120,000 and the real preapproved amount to roughly $380,000 — a $70,000 gap between the number they were house-shopping with and the number a lender will actually fund. Discovering that gap after an offer has already been accepted on a $440,000 house is a genuinely bad position to be in. Discovering it before you start touring homes costs nothing.

Get the real preapproval letter before you start looking seriously, not after you’ve found a house you want.

Build your credit file if you’re new to the US

Many recent arrivals are “credit invisible” — no US credit history at all, regardless of a strong credit history back home, since credit bureaus don’t transfer international records. This isn’t disqualifying, but it takes time to fix, so start early:

• A secured credit card, used lightly and paid in full monthly, reported to the major bureaus.
• Experian Boost or a rent-reporting service, which can factor on-time rent and utility payments into your credit file even without traditional credit accounts.
• Becoming an authorized user on a family member’s well-established card, if that’s an option.

Six to twelve months of consistent activity is generally enough to establish a workable file — conventional loans typically want a score around 620+ to qualify at all, with the best pricing tiers starting closer to 740+. Starting this the moment buying is even a possibility avoids it becoming the bottleneck later.

Assemble your documentation before a lender asks for it

Having these ready in advance turns preapproval into a days-long process instead of a weeks-long one:

• 2 years of tax returns (translated and converted if any income is foreign-sourced).
• Recent pay stubs and W-2s or 1099s.
• 2-3 months of bank statements for every account you’ll draw funds from, with any large deposits already explained and sourced.
• Immigration documentation — visa approval notice (I-797), passport and visa stamp copies, EAD if applicable — lenders use these to assess continued work authorization, not immigration status itself.

Budget for the real monthly cost, not just the mortgage payment

The number a preapproval letter quotes is principal, interest, taxes, and insurance (PITI) — but it’s easy to stop your budgeting there. Add:

• HOA dues, if applicable — can range from negligible to several hundred dollars a month depending on the property.
• Maintenance reserve — a common rule of thumb is roughly 1% of the home’s value per year (on a $400,000 home, about $4,000/year, or roughly $333/month) set aside for repairs and upkeep, separate from your mortgage payment.
• PMI or MIP, if your down payment is under 20% — covered in detail with the actual formulas in the mortgage payment calculator.

Shop multiple lenders inside the scoring window

Credit scoring models generally group multiple mortgage-related inquiries made within a defined window — commonly cited as 14-45 days depending on the specific scoring model — as a single inquiry for score-impact purposes. That means getting quotes from 3+ lenders within a tight window costs far less credit score impact than most people assume, and rate differences between lenders are frequently significant enough on a 30-year loan to be worth the comparison shopping.

Be honest about your visa timeline before you commit

None of the financial preparation above changes the underlying question of whether buying makes sense given your visa situation — that’s a separate decision covered in full in renting vs. buying on a visa, and it’s worth reading before, not after, you’ve done all the preparation above.