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How Much House Can You Afford?
A plain-English guide for buyers and downsizers in Hamilton and Boone County
By Susan Roberts, Associate Broker, eXp Realty
How much house can you afford? In plain English: keep everything related to housing, meaning mortgage, property taxes, insurance, and HOA fees, at or below 28% of your gross monthly income, and keep all of your debts combined at or below 36%. The exact number depends on what you earn, what you already owe each month, your down payment, and today's interest rates here in Hamilton and Boone County. This guide walks you through the simple math, gives you a calculator you can use tonight, and covers the questions that matter most if you are downsizing.
Current market snapshot
- Hamilton County median home price: approximately $475,000, the highest in central Indiana.
- Rates have been running near 6.7%.
- (Updated Fall 2026; we refresh this number periodically.)
This box is the piece we update whenever the market moves, so it always carries the freshest headline number on this page. The rest of the guide, the math, stays true no matter what rates or prices do.
The two numbers that matter
Lenders use a rule of thumb called the 28/36 rule, and it has been around for decades because it works. It answers two questions at once: how much of your income should go to housing, and how much should go to everything you owe.
of gross monthly income to housing: mortgage, property taxes, homeowners insurance, and HOA fees, all together.
of gross monthly income to all debts combined, your housing payment plus car loans, student loans, credit card minimums, and anything else.
Here is the example I use with clients all the time. Say your household brings in $10,000 a month before taxes. Your housing cap is $2,800 a month, and your total debt cap is $3,600 a month. If you already carry $500 in monthly car and student loan payments, you have about $3,100 of room left, which keeps you safely inside both numbers.
One more thing: 28% is the ceiling, not the goal. Many people find they feel far more comfortable closer to 25% of income going to housing. Life has surprises, and a payment with a little breathing room is a payment that never keeps you up at night.
Try it yourself: How much can you afford?
Plug in your numbers and hit Calculate. This tool applies the 28/36 guidelines, assumes a 30-year fixed loan at the rate you enter, and sets aside roughly $400 a month for taxes, insurance, and HOA.
This is an estimate to get you started. Your lender will run official numbers for you.
If you are a downsizer, the math changes in your favor
For empty nesters moving from a larger home, the affordability picture often flips completely. Here is why, in the warm, practical terms I use with clients every week.
Selling can erase the mortgage
Many of my downsizing clients own their larger home free and clear. When you sell and move to something smaller, the monthly payment can disappear entirely, or shrink to a fraction of what you were paying. In a 55+ community, that smaller payment can change your whole budget.
Your equity funds the next move
The proceeds from your sale can pay for the new home, the move itself, and any updates your new place needs. For many empty nesters, that equity turns what feels like a scary transition into a comfortable, well-planned one.
The SRES credential means I get this
As a Senior Real Estate Specialist, I have specific training for this transition, and I have guided many families through it. I help with sorting decades of belongings, prepping your home for sale, and choosing a new home that fits how you want to live now.
"The math tends to be on your side. The rest is a plan, and building that plan with you is exactly what I do."
Susan Roberts, SRES
Down payment myths, busted
The biggest myth I hear is that you need 20% down before you can even think about buying. You don't. Solid loan programs let you buy with 3%, 5%, or 10% down, and some go even lower. Waiting for a perfect 20% can cost you years of building equity while prices keep climbing.
A smaller down payment means a higher monthly payment and, usually, private mortgage insurance. It also means you can start building equity now instead of paying rent while you save. And keep an emergency fund: a big down payment is not a good idea if it drains every dollar you have. The right down payment is the one that lets you buy without emptying your safety net.
The costs people forget
The purchase price is only part of the story. Your real monthly number includes three things buyers often forget about:
- Property taxes. They are part of your payment every single month, usually held in escrow by your lender.
- Homeowners insurance. Required by your lender, and it varies by home, location, and coverage.
- HOA fees. Many Hamilton County neighborhoods and almost all 55+ communities carry monthly association dues that never go away.
Here in Hamilton County, property taxes are notable, and they push the average monthly housing cost above the national average. That is the price of living in one of the most desirable counties in the Midwest, and most families find it worth it. But it means you should never shop on price alone. Always ask for the full payment breakdown, the tax bill and the insurance estimate included, before you decide a home fits your budget.
Where the numbers point in our area
Run the snapshot numbers and here is what you get. The Hamilton County median of roughly $475,000 works out to about $3,400 to $3,600 a month at 20% down with rates near 6.7%, once taxes and insurance are included. That is a serious payment, which is exactly why the median is out of reach for many households on the 28/36 math.
Households earning around $10,000 a month typically find their comfortable band in the $350,000 to $400,000 range, where there are strong, move-in-ready options in Noblesville, Westfield, and Whitestown, plus townhomes and condos in the $200,000s in communities like Zionsville and Carmel.
No two buyers are the same, which is why I work across all six communities, Carmel, Fishers, Noblesville, Westfield, Zionsville, and Whitestown, matching the payment to the life you want. And remember: the snapshot box at the top of this guide is the piece we refresh as the market moves, so check it whenever you are ready to run your numbers.
The bottom line
Don't max out. A lender's number is a ceiling, not a target. The right home is the one that leaves room for maintenance, for savings, and for the life you actually want to live. A payment you can handle without stress is a home you get to enjoy.
For more than 25 years, I have helped buyers and downsizers across Carmel, Fishers, Noblesville, Westfield, Zionsville, and Whitestown find homes that fit their budget and their lives. Knowing your number is the start. Feeling confident in the home is the goal.
Ready to run your real numbers?
Call or text me at 317-777-9146, or book a free consultation here. We'll run your numbers together and map out a plan that fits your budget and your life.