Things to Know Before Buying a House: Essential Tips

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What to Know Before Buying a House: Your Guide to Home Affordability, Mortgage Costs, and Financial Preparedness

Buying a home is more than just a major milestone; it’s one of the biggest financial decisions you’ll ever make. From calculating how much house you can afford to understanding your monthly mortgage payment and factoring in property taxes, mortgage insurance premiums, and closing costs, there’s a lot to evaluate before signing on the dotted line.

Whether you're a first-time buyer or upgrading to your next home, this in-depth guide will walk you through the home buying process, explain the key factors that affect mortgage affordability, and help you determine the purchase price you can reasonably manage based on your gross monthly income, monthly debt, and more.

1. How much house can I afford?

The first—and most important—question is: how much house can I afford? It’s not just about the home loan or the mortgage rates offered by your mortgage lender. You need to look at your entire financial situation, including your monthly income, monthly debt payments, student loan payments, car loan, and monthly bills.

A good rule of thumb is that your total monthly mortgage payment, including principal, interest, taxes, and insurance (PITI), should not exceed 28% to 30% of your gross income. This helps ensure that your mortgage loan remains manageable and doesn’t stretch your budget too thin.

To get a clearer picture, use a home affordability calculator or mortgage affordability calculator. These tools can help you estimate how much mortgage you can qualify for based on your:

  • Annual income
  • Monthly gross income (pre tax income)
  • Debt to income ratio (DTI)
  • Total monthly debts
  • Loan term
  • Interest rate
  • Down payment amount
  • Mortgage insurance
  • Condo or homeowners association (HOA) fees

2. Understand the Full Range of Costs Involved

When determining the house you can afford, you need to go beyond the listing purchase price. Your total monthly mortgage payment is impacted by:

Down Payment

The larger your down payment, the smaller your loan amount, and the lower your monthly payment. Conventional home loans typically require 5%–20% down, while government-backed loans like FHA loans or VA loans may allow for lower down payments.

Private Mortgage Insurance (PMI)

If your down payment amount is less than 20%, your lender may require you to pay private mortgage insurance. This protects the lender—not you—if you default on the loan, and it adds to your monthly mortgage payment.

Homeowners Insurance and Property Insurance

Homeowners insurance is required by lenders and protects against damages from fire, theft, and natural disasters. The average annual cost of property insurance varies depending on your location, property value, and insurer.

Property Taxes

Your local property tax rate can significantly affect your monthly payment. Check with your local government to get an estimate of the annual property taxes in your area.

HOA Fees or Condo Fees

Many properties—especially townhomes, condos, and houses in planned communities—charge homeowners association(HOA) or condo fees. These monthly payments cover shared amenities and maintenance but can range from $50 to $1,000+ depending on the services provided.

Closing Costs

When you finalize your home loan, you’ll also need to pay these costs, which can include loan origination fees, title insurance, appraisal fees, and more. These typically range from 2% to 5% of the purchase price.

Maintenance & Repairs

You should also set aside 1%–3% of your home’s value each year for basic home maintenance, appliance replacements, and major repairs like roofing or HVAC systems.

A family sitting on the floor surrounded by boxes after buying a house.

3. Choose the Right Home Loan Type

Selecting the right loan program can make a big difference in your long-term financial health. Common options include:

  • Conventional Loans: Ideal for buyers with good credit and stable income
  • Fixed Rate Loans: Provide consistent mortgage interest rates over the life of the loan
  • FHA Loans: Backed by the Federal Housing Administration, perfect for lower credit or smaller down payment buyers
  • VA Loans: For eligible veterans and military personnel, often with zero down payment
  • Adjustable Rate Mortgages (ARMs): Start with lower interest rates that adjust over time
  • USDA Loans: For rural and suburban homebuyers with low to moderate income

Every mortgage lender will assess your credit approval, debt to income ratio, and gross monthly income to determine eligibility and loan amount. A higher credit score can earn you lower mortgage rates, which translates to lower estimated monthly payments over time.

4. Know What You Want in a Home

Once you’ve figured out how much mortgage you can handle, evaluate whether the house meets your needs:

  • Square footage
  • Number of bedrooms and bathrooms
  • Garage or storage
  • Outdoor space or landscaping
  • Proximity to work, schools, and amenities

Avoid buying too much house, which can result in higher monthly debt and additional homeowners insurance costs.

5. Evaluate the Location Carefully

The value of your investment and your everyday lifestyle are highly influenced by location. When choosing a property, consider:

  • Commute times to work
  • School ratings
  • Neighborhood safety
  • Walkability and access to services
  • Property tax rate in the area

Some areas may also be subject to special assessments or local government development plans, so make sure to review all zoning and regulatory considerations.

6. Prepare for the Loan Approval Process

When applying for a mortgage loan, your lender will closely review your:

  • Monthly debt payments
  • Student loans
  • Car loan
  • Credit history
  • Monthly income
  • Debt to income ratio

Improving your credit score, reducing your total debt, and increasing your pre tax income can all help you secure a better mortgage interest rate and get approved for a higher loan amount—but remember, just because you're approved for more doesn't mean you should borrow the maximum.

Use a mortgage affordability calculator to set realistic boundaries.

7. Be Ready for Ongoing Expenses

After buying a home, you’ll continue paying monthly bills that include:

  • Monthly mortgage payment
  • Property taxes
  • Mortgage insurance
  • Homeowners insurance
  • Utilities and services
  • HOA fees
  • Repairs and replacements

Keeping your financial situation stable and budgeting for estimated monthly payments will help you stay on track after closing.

8. Use Tools and Professionals to Make Informed Choices

Not sure where to start? These resources can help:

  • Use a mortgage calculator to estimate your monthly payment based on different loan amounts and interest rates (go here and here to find our mortgage affordability calculators)
  • Speak with a licensed mortgage lender or broker to compare loan programs
  • Consult a real estate agent for guidance on purchase price and market conditions
  • Take an online course on the homebuying process to better understand the steps to loan approval
  • Get Home Buyer Counseling to confirm how much house you can afford

Conclusion: Make Smart, Affordable Choices When Buying a Home

Before you jump into homeownership, take the time to assess how much house you can afford based on your gross income, monthly debt, and all the other costs of owning a home. Use tools like a home affordability calculator and mortgage calculators to get a clear picture of your budget.

Remember, getting approved for a mortgage is just the beginning. Your goal is to secure a home and a mortgage payment that fits your life, not just your loan limits.

Whether the home loan you're considering is a conventional loan, an FHA loan, or a VA loan, knowing your numbers will help you confidently answer the question: how much house can I afford?

Not sure where to begin? Talk with our professional finance counselors to determine your mortgage readiness and take control of your upcoming and existing debt today.

Jeff Michael
Article written by
Jeff Michael is the author of More Than Money, a debtor education guide for pre-bankruptcy debtor education, and Repair Your Credit and Knock Out Your Debt from McGraw-Hill books. He was a contributor to Tips from The Top: Targeted Advice from America’s Top Money Minds. He lives in Overland Park, Kansas.
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