The most common first time buyer mistakes in Sioux Falls are shopping before a real pre-approval, assuming you need 20% down when SDHDA will lend 3% to 5% of the loan at 0% interest, misreading days on market as a sign something is wrong, skipping or waiving the inspection to win, and spending every dollar of savings at closing with nothing left for the furnace that quits in January. With City of Sioux Falls sellers receiving about 97% of original list price and a year-to-date median sale price of $334,900 through August 2026 (RASE), the margin for error is thin but the fixes are simple. Here are the ten mistakes I see most, and how to avoid each one.
Mistake 1: Touring homes before a real pre-approval
A pre-qualification is a conversation. A pre-approval is a lender pulling credit, verifying income and assets, and telling you in writing what you can borrow. Sioux Falls buyers who tour first and finance second fall in love with a $400,000 house on a $340,000 budget, or lose the right house because a competing offer came with a pre-approval letter and theirs did not. Get the letter first, and ask the lender for an underwritten pre-approval if they offer one. How to Choose a Mortgage Lender in Sioux Falls walks through the difference.
Mistake 2: Assuming you need 20% down
Twenty percent on the $334,900 City of Sioux Falls median is about $67,000, and many renters conclude ownership is years away. It usually is not. Conventional loans allow 3% to 5% down, FHA allows 3.5%, VA and USDA can be zero, and the South Dakota Housing Development Authority’s First-time Homebuyer Program pairs a fixed-rate mortgage with down payment and closing cost assistance equal to 3% or 5% of the loan amount as a 0% second mortgage due when you sell or refinance. The program applies to purchase prices of $410,000 or less, with income limits, and you qualify as a first-time buyer if you have not owned a home in the past three years (sdhousing.org, verified October 2026). How Much Down Payment Do You Actually Need in Sioux Falls? puts real dollar figures on each option.
Mistake 3: Shopping at the top of the pre-approval
The lender’s number is the maximum they will lend, not the amount you should borrow. At the Freddie Mac national average of 7.28% for a 30-year fixed as of October 1, 2026, each $10,000 of loan adds roughly $68 a month in principal and interest before taxes and insurance. Build your budget from your actual monthly life, including the car, student loans, child care, and savings, then back into a price. Leave room for the costs below.
Mistake 4: Forgetting closing costs, taxes, and insurance
Closing costs for Sioux Falls buyers typically run 2% to 5% of the purchase price on top of the down payment, and the monthly payment includes property taxes and homeowners insurance, which in South Dakota are both meaningful. A payment estimate that shows only principal and interest is not a payment estimate. Ask the lender for the full Loan Estimate and read the cash-to-close line, then read The Real Cost of Buying a Home in Sioux Falls so nothing on it surprises you.
Mistake 5: Misreading days on market
First-time buyers often assume a home that has sat for a few weeks must have a problem, or that a brand-new listing must be priced right. Neither follows. In the City of Sioux Falls, the average days until sale was 76 in August 2026 (RASE), so a home at 30 days is ordinary, not distressed. Days on market is one input alongside price per square foot against closed comparables, price reductions, and condition. Is This Sioux Falls Home Overpriced? How to Tell shows how to weigh them together.
Mistake 6: Waiving the inspection to win
Sioux Falls has a large stock of homes built before 1980, and the expensive problems here are the ones you cannot see at a showing: sewer lines, radon, foundation movement, aging furnaces, and roofs at the end of their life. Waiving the inspection to make an offer stronger trades a few hundred dollars of certainty for a five-figure risk. If you need to compete, shorten the inspection window or offer to limit requests to major items rather than skip it. What a Home Inspection Really Checks in Sioux Falls covers what the inspectors look for in older homes.
Mistake 7: Changing your finances mid-contract
The lender re-verifies credit and employment before closing. Buyers who open a furniture-store credit card, finance a vehicle, switch jobs, or move large sums between accounts without a paper trail can see their approval change in the final week. From the day you go under contract until the day you get keys, make no financial moves without a call to your loan officer first.
Mistake 8: Draining every dollar at closing
Closing with an empty account is the mistake that turns a good purchase into a stressful first year. Water heaters, sump pumps, and furnaces do not check your balance before they fail, and a South Dakota winter is not the time to discover that. Keep a reserve of at least a few months of housing costs after closing. If that means buying a little less house or using SDHDA assistance to preserve savings, that is the better trade.
Mistake 9: Ignoring school boundaries and the neighborhood at night
Sioux Falls addresses can sit in the Sioux Falls, Harrisburg, Brandon Valley, Tea Area, or West Central school districts, and boundaries do not follow city limits. Verify the district and the specific zoned schools for any address before you write, because they affect both daily life and resale. Visit the block at different times of day and in different weather. Check the commute you will actually drive, not the one on the map.
Mistake 10: Letting emotion write the offer
The first home that feels right often produces an offer above what the closed comparables support. Sellers in the City of Sioux Falls received about 97% of original list price in August 2026 (RASE), which means most homes sell a little under asking, not over it. Build the offer from the last 90 days of closed sales for similar homes, decide your walk-away number before you write, and remember that another house will come on the market next week. How to Negotiate a Home Price in the Sioux Falls Market explains where the leverage really is.
Frequently asked questions
What is the biggest mistake first-time buyers make in Sioux Falls?
Starting with homes instead of financing. A written pre-approval sets the real budget, makes your offer credible, and tells you whether programs such as SDHDA assistance apply to you before you fall for a house you cannot buy on good terms.
How much do I really need to buy a first home in Sioux Falls?
Less than most renters think. Down payments range from zero on VA and USDA loans to 3% to 5% on conventional and FHA loans, plus 2% to 5% in closing costs. SDHDA’s First-time Homebuyer Program can cover 3% or 5% of the loan amount for homes priced at $410,000 or less, subject to income limits.
Should I waive the inspection to compete?
No. Shorten the inspection period or agree in advance to request repairs only for major defects. Sewer, radon, foundation, and mechanical problems in older Sioux Falls homes are too expensive to accept blind.
Does a home that has been listed for a month have something wrong with it?
Not by itself. The City of Sioux Falls average days until sale was 76 in August 2026, so a month on the market is normal. Judge the home on price against closed comparables and on condition, not on the calendar alone.
Can I switch jobs while I am under contract?
Talk to your lender before you do anything. A new job in the same field with a start date before closing is often fine; a change in pay structure, a probationary period, or a gap can delay or derail the loan.
How much should I keep in savings after closing?
Enough to cover at least a few months of housing costs plus a repair. The first year of ownership usually brings at least one unplanned expense, and a cushion turns it from an emergency into an errand.
Buying your first home in Sioux Falls? Start with a 20-minute conversation
I teach the SDHDA homebuyer education course and have walked hundreds of Sioux Falls buyers through their first purchase. We will go through your budget, the programs you may qualify for, and what the current market means for your offer. No pressure, no hand-offs. One agent, start to finish. If you want the full process laid out first, read First-Time Home Buyer Guide for Sioux Falls (Step-by-Step).
Bryan Anfinson, REALTOR® — Hegg, REALTORS® · Sioux Falls, SD
Call or text (605) 670-9846 · bryan@hegg.com · bryananfinson.com
This article is for general informational purposes only and is not financial, legal, or tax advice. Market data is from the REALTOR® Association of the Sioux Empire (City of Sioux Falls, as of August 2026) and changes monthly; mortgage rates are the Freddie Mac national average for October 1, 2026 and your rate will differ; SDHDA program terms are subject to change and eligibility is determined by an approved lender. Consult a licensed lender, attorney, or tax professional about your situation. All real estate services are offered in compliance with the Fair Housing Act.
Sources
- South Dakota Housing — First-time Homebuyer Program (purchase price limit, Fixed Rate Plus 3% and 5% assistance, three-year rule)
- REALTOR® Association of the Sioux Empire — Local Market Update, City of Sioux Falls, August 2026
- Freddie Mac Primary Mortgage Market Survey, October 1, 2026
- Consumer Financial Protection Bureau — Loan Estimate explainer