TL;DR — the short version
Lenders look at your full monthly payment, not just the price: principal, interest, property taxes, insurance, mortgage insurance and HOA dues.
Johnson County property taxes are a big line item. They’re figured as 11.5% of appraised value × your local mill levy, so the same price can mean different payments in different cities.
A common starting rule: keep housing costs around 28% of gross monthly income and total debts around 36%. Many loan programs allow more, but more isn’t always comfortable.
Your down payment changes everything. Conventional first-time buyer loans can start at 3% down and FHA at 3.5%, but less down means a bigger loan and usually mortgage insurance.
Get pre-approved to see your real number, then decide what you’re comfortable paying, which may be less than what you’re approved for.
“How much house can I afford?” is the first question almost every first-time buyer asks, and online calculators often get it wrong in Johnson County because they underestimate property taxes.
This guide walks through how lenders calculate what you can borrow, an example monthly payment for a JoCo home, and how to find a number that leaves room for the rest of your life. For the full buying process, start with my first-time buyer guide for Johnson County.
1. How Lenders Decide What You Can Afford
Lenders mainly look at your debt-to-income ratio (DTI): your monthly debt payments divided by your gross monthly income.
Ratio | What it includes | Common starting guideline |
|---|---|---|
Housing ratio | New house payment (principal, interest, taxes, insurance, HOA, mortgage insurance) | About 28% of gross monthly income |
Total DTI | House payment + car loans, student loans, credit cards, other debts | About 36%, and many programs allow more |
What to do: Add up your monthly debt payments now. Paying off a small balance before applying can raise what you qualify for.
2. An Example Johnson County Payment
Here’s an illustrative breakdown for a $350,000 home with 5% down. Your rate, taxes and insurance will differ, so treat this as a model, not a quote.
Line item | Example monthly cost | How it’s estimated |
|---|---|---|
Principal & interest | ≈ $2,100 | $332,500 loan, 30 years, 6.5% example rate |
Property taxes | ≈ $420 | $350,000 × 11.5% × 125 example mills ÷ 12 |
Homeowners insurance | ≈ $150 | Example only. Get real quotes, since hail coverage matters here |
Mortgage insurance | ≈ $140 | Example only. Depends on credit and down payment |
Total | ≈ $2,810 |
At a 28% housing ratio, that payment works out to roughly $120,000 a year in household income. With more down, a lower rate or a home in a lower-levy area, the number drops.
What to do: Replace the example numbers with your lender’s rate, the real tax bill for the address, and real insurance quotes.
3. Property Taxes by City
The city levy is only one part of your bill, but it shows how location changes the math. City portion only, on a $350,000 home:
City | City mill levy | City portion per year |
|---|---|---|
Overland Park | 14.538 (2026) | ≈ $585 |
Shawnee | ~23 (city example) | ≈ $928 |
Lenexa | 26.209 (2026) | ≈ $1,055 |
School district and county levies add the larger share. Look up any address on the Johnson County Property Tax Viewer.
4. Down Payment and Cash to Close
Loan type | Typical minimum down | Good to know |
|---|---|---|
Conventional (first-time buyer programs) | 3% | Mortgage insurance until about 20% equity |
FHA | 3.5% | More flexible on credit |
VA | 0% | For eligible veterans and service members |
You’ll also need closing costs and a cash cushion. Kansas helps a little: there’s no state transfer tax and no mortgage registration tax. A Kansas First-Time Home Buyer Savings Account can also give you a state tax deduction while you save.
What to do: Ask your lender for a full estimate of cash to close: down payment, closing costs and prepaid items.
5. Find Your Comfortable Number
Start from your budget, not your approval. Decide the monthly payment you’d be comfortable with even in a tight month.
Keep a reserve. Plan for 3–6 months of expenses after closing.
Budget for the house itself. Older homes in established neighborhoods may need updates sooner.
Compare total payments between cities before you fall for a listing.
Want your real Johnson County number?
I’ll connect you with a trusted lender and map your budget to neighborhoods that fit. Get started →
Frequently Asked Questions
How much income do I need to buy a $350,000 home in Johnson County?
With 5% down and the example assumptions above, a payment around $2,800 a month points to roughly $120,000 a year in household income at a 28% housing ratio. A bigger down payment, lower rate or lower taxes reduce that.
Why are Johnson County payments higher than online calculators show?
Many calculators use national tax averages. Johnson County taxes depend on the 11.5% assessment rate and your local mill levy, which can add hundreds of dollars a month.
How much should I put down on my first home?
Many first-time buyers put 3–3.5% down. More down lowers your payment and mortgage insurance, but keep enough cash for closing costs and reserves.
Does being pre-approved mean I can afford that amount?
Not necessarily. Pre-approval shows what a lender will lend. Your comfortable budget may be lower once you account for savings goals and other expenses.
Do I need 20% down to avoid mortgage insurance?
On conventional loans, mortgage insurance usually applies under 20% down and can be removed later as you build equity. FHA mortgage insurance works differently, so ask your lender.
Related Resources
The Johnson County First-Time Buyer Checklist — includes a payment worksheet
Get Started — tell me about your move
This article is general information, not lending, tax or financial advice. Rates, taxes and insurance costs vary. Confirm your numbers with a licensed lender and the county.
Free guide
The Johnson County First-Time Buyer Checklist
Get the step-by-step checklist, payment worksheet and inspection list I give my own first-time buyers.