How Much House Can I Afford in Sioux Falls, SD?

How much house can you afford in Sioux Falls right now? Start with the market: the median sale price here was about $327,000 over the last three months, up roughly 2.2% year over year, according to Redfin, and 30-year fixed mortgage rates were around 7.4% in early October 2026, per Freddie Mac. Run the standard calculation on that median-priced home with 20% down, and the income needed lands near $96,000 a year. But the number that matters is yours, and it comes from four levers you control: income, debts, down payment, and the rate you lock in.

“I walk buyers through this math on every first conversation. The lender tells you the maximum you qualify for; I help you find the number you will actually be comfortable with when the furnace needs replacing and the property taxes reset.”

The rule lenders actually use: 28/36

Before any lender talks price, they look at your debt-to-income ratio, the share of your gross monthly income that goes to debt. The shorthand is the 28/36 rule. The front-end ratio says your housing payment, meaning principal, interest, property taxes, homeowners insurance, and any HOA dues, should stay around 28% of your gross monthly income. The back-end ratio says all of your monthly debts together, housing plus car payments, student loans, credit card minimums, and anything else, should stay around 36%.

Those are guidelines, not laws. Qualified mortgages cap the back-end ratio at 43%, FHA guidelines use 31% and 43%, and VA loans have no fixed cap but commonly land near 41%. The practical takeaway is the same: your income sets the ceiling, and your other debts take a bite out of it before the house gets a dollar. A $500 car payment is $500 a month the house cannot use.

What the numbers look like in Sioux Falls right now

The headline numbers, as of early October 2026: the median sale price in Sioux Falls was about $327,000 over the last three months, up roughly 2.2% year over year, according to Redfin, and a separate July 2026 read put the median sold price at about $335,000, per Resideline. The 30-year fixed rate was about 7.4% in the week of October 8, 2026, per Freddie Mac's Primary Mortgage Market Survey, with Bankrate and NerdWallet tracking close to 7.5%.

Now run the payment. On a $327,000 home with 20% down, the loan is $261,600. At 7.4% for 30 years, principal and interest run about $1,811 a month. Property taxes add roughly $300 a month and homeowners insurance about $125 to $150, for a total housing payment near $2,240 to $2,260. At the 28% front-end rule, that payment needs about $96,000 a year in household income. That is the honest, current cost of a typical Sioux Falls home, before utilities, maintenance, or any HOA dues.

How much house can you afford by income?

Here is the same math run backward, so you can find your own starting point. The table applies the 28% rule to a few household income levels, then shows the rough purchase price that monthly housing budget supports at today's rate with 20% down.

Table assumes 20% down, a 30-year fixed rate near 7.4%, and roughly $430 a month for property taxes and homeowners insurance. A smaller down payment lowers the price you can carry, because the loan is larger and private mortgage insurance gets added; a larger down payment raises it. Your real number comes from your actual debts, taxes, and rate.

Notice where the median lands. A household earning around $100,000 sits right at the edge of a median-priced Sioux Falls home, and households below that are shopping below the median or leaning on a bigger down payment, a lower rate, or down payment assistance. None of that is a judgment, it is just where the math sits today, and it is exactly why the down payment conversation matters so much.

The four levers that change your number

Your affordable price is not destiny. It moves with four levers, and it helps to know which ones you can pull:

• Income. Lenders want two years of stable, documented income, and they use gross income, not take-home. A raise, a second income, or a job change that strengthens your history all raise your ceiling. This is the lever relocators should think about before they move, because South Dakota's lack of a state income tax changes the take-home math compared to many other states.
• Debts. Every $100 a month of car payment, student loan, or credit card minimum takes roughly $18,000 off the purchase price you can carry at today's rate with 20% down. Paying down debt before you apply is one of the fastest ways to raise your number, and it is the same advice I give in my guide to credit scores and buying, because score and debt load move together.
• Down payment. More down means a smaller loan, a lower payment, and no private mortgage insurance at 20%. But you do not need 20%. FHA goes to 3.5%, VA and USDA can go to 0% for eligible buyers, and SD Housing can add 3% or 5% at 0% interest for qualifying first-time buyers. I laid out every program in my down payment assistance guide.
• Rate. At 7.4%, the rate is the biggest single line in your payment, and it moves your number more than any other lever. A half point of rate moves the monthly payment by roughly $80 to $90 per $100,000 borrowed, which is why the timing question, buying now versus waiting for rates, is worth a real conversation rather than a guess. I covered that in my guide to buying now or waiting for rates.

The difference between what the lender approves and what you should spend

Here is the part most affordability calculators skip. Lenders can approve you up to 43% or even 50% of income going to debt, and that approval is not the same as a comfortable budget. The payment on the mortgage is only part of what a house costs you. Property taxes in Sioux Falls run several hundred dollars a month on a typical home, homeowners insurance adds more, utilities in a South Dakota winter are real, and maintenance on a home runs, by the common rule of thumb, about 1% of the home's value per year. On a $300,000 home, that is $3,000 a year set aside for the roof, the furnace, and everything else that wears out.

That is where my background matters. I spent years in construction, electrical work, and workplace safety, and I walk homes looking at condition the way a buyer should: the age of the furnace and water heater, the state of the roof, the grading around the foundation, the electrical panel. A fixer-upper priced $40,000 below a move-in-ready home can end up costing more than the difference in the first two years, and a well-maintained home at a slightly higher price can be the better buy. Affordability is not just the purchase price, it is what the house will cost you to own. My home inspection guide walks through what to look for before you commit.

What to do before you shop

If you are ready to turn this into a number you can shop with, the order matters:

• Run your own budget first. Take your gross monthly income, subtract your real debts, and apply the 28/36 rule before you talk to anyone. You will walk into the lender conversation knowing your number instead of waiting to be told.
• Get pre-approved. Pre-approval is standard in Sioux Falls, and sellers and listing agents expect it. It tells you the loan amount, the loan type, and the rate range you qualify for, and it is the difference between a serious offer and a wish.
• Know the full monthly cost. Add property taxes, insurance, utilities, and maintenance to the mortgage payment before you decide what is comfortable. The payment the lender quotes is not the whole picture.
• Shop with a budget, not a wish. When you know your number, you can tell an agent, and me, exactly what to show you. It saves everyone time and keeps you from falling in love with a house that stretches the budget you set.

The honest summary: a median-priced Sioux Falls home costs about $2,240 to $2,260 a month at today's rates with 20% down, and that needs roughly $96,000 a year in household income under the 28% rule. Your number is different, and it is knowable. Let us run it together, with your real income, your real debts, and the homes you would actually buy, so you shop with a number instead of a guess.