How Much House Can You Afford?

Ask a lender how much house you can afford, and they’ll give you a real number, backed by your income, debts, and credit.

Ask yourself the same question, and you might get a different answer entirely.

Both numbers matter. Confusing them is where a lot of buyers get into trouble, either by assuming the lender’s max is automatically the “right” number, or by feeling like affordability is some mystery only a lender can solve. It isn’t. You just need to separate the two questions.

The Lender’s Number: What You Qualify to Borrow

If you’ve read my post on Getting Pre-Approved, you already know a lender’s pre-approval is based on your income, debts, credit history, and financial documents. That process gives you a hard ceiling, the maximum a lender is willing to hand you.

That number is real, and it’s necessary. But it’s calculated around risk to the lender, not around what feels sustainable in your actual life. It doesn’t know that you’re saving for a wedding next year, that you’d rather travel than have a bigger kitchen, or that you hate the idea of being “house poor” even if the math technically works.

That’s where the second number comes in.

Your Number: What You’re Actually Comfortable Paying

This is the number only you can answer, and it’s the one that determines whether buying a home improves your life or just adds stress to it.

A helpful starting point many buyers use is keeping total housing costs around 25–30% of take-home pay, with total debt (including the mortgage) under roughly 36%. But treat that as a reference point, not a rule, it doesn’t account for your specific goals, other financial priorities, or how much cushion feels right to you personally. Some people are comfortable further out on that range; others want much more breathing room.

The real exercise is asking: what payment would still let me live the life I actually want?

What the Lender’s Number Doesn’t Include

The mortgage payment itself is only part of the real cost of homeownership. Before you land on your number, it’s worth accounting for:

• Utilities (often higher than renters expect, especially with more square footage)
• Home maintenance and repairs
• Lawn care
• HOA dues, if applicable
• Homeowners insurance
• Property taxes
• Car payment, insurance, and gas (worth a real look in a metro like Tulsa, where most commutes depend on a car)
• Groceries and eating out (this one varies wildly, a household that cooks at home most nights has a very different number than one that eats out several times a week, and neither is wrong)
• Furniture and move-in costs
• Future savings goals
• Vacations, hobbies, and everyday life

None of these show up in a pre-approval letter. All of them show up in your bank account.

A Simple Way to Find Your Number

Instead of starting with “how much can I borrow” and working forward, try working backward:

1. Look at what you comfortably spend and save each month right now
2. Decide what monthly payment would still leave room for the list above
3. Compare that number to your lender’s maximum

Most of the time, your comfortable number lands somewhere at or below the lender’s max, which is a good sign, not a disappointing one. It means you have room to breathe.

If there’s a big gap between the two numbers, that’s worth a conversation. Sometimes it means adjusting your search criteria, and sometimes it just means you’re a naturally cautious spender who’s about to feel very at ease in a new home.

Want to run your own numbers? Open the Home Affordability Worksheet and go to File → Make a Copy once it opens so you can edit it freely.→ Plug in your income, current expenses, and lender’s number to see exactly where your comfortable range lands.

Where I Fit Into This

I can’t tell you what feels affordable to you. That’s genuinely personal. But I can help you think through the categories that are easy to forget, connect you with a lender who’ll give you an honest max, and make sure the homes we tour actually fit the number you’ve landed on, not just the number on paper.

That’s really the goal: not the biggest house you qualify for, but the right one for how you actually want to live.

Ready for the next step?

My Tulsa Home Buying Roadmap walks you through every step, from deciding you’re ready all the way to closing day.

Continue the Roadmap →

Haven’t gotten pre-approved yet? Start with Getting Pre-Approved to find out your lender’s number first.

If you’re ready to start touring homes, my Buying a Home page explains what it’s like to work together.