How Much House Can I Afford in Northern Virginia? A Realistic Way to Find Your Number

The best way to find how much house you can afford in Northern Virginia is to start from a monthly payment you’re comfortable with, including taxes, insurance, HOA dues and mortgage insurance, and work backward to a purchase price. Lenders will tell you the maximum you can borrow based on your income and debts, but that number is often higher than what fits your life. In this guide I’ll walk through the rules lenders use, the local costs that change the math, and a worked example you can copy with your own numbers.

Step 1: Know the rules lenders use

Lenders size your loan mainly by your debt-to-income ratio (DTI), your credit, your down payment and your cash reserves. DTI compares your monthly debt payments with your gross monthly income:

• Front-end ratio: your total housing payment divided by gross monthly income. A traditional guideline is about 28%.
• Back-end ratio: housing plus car loans, student loans, credit card minimums and other debts, divided by gross monthly income. A traditional guideline is about 36%.
• What loans actually allow: many conventional, FHA and VA loans approve higher ratios for borrowers with strong credit, reserves or other compensating factors. Approval at a high DTI doesn’t mean the payment will feel comfortable.

My post on debt-to-income ratio walks through the calculation in more detail, and preapproval vs. prequalification explains why a full preapproval gives you a more reliable number.

Step 2: Add up the real monthly cost

Your mortgage payment is only part of the picture. In Northern Virginia, the full monthly housing cost usually includes:

Cost	What drives it	Where to check
Principal and interest	Loan amount, rate and term	Your lender’s Loan Estimate
Real estate taxes	Assessed value times your locality’s rate; town residents pay a town tax too	County or city tax office; see my property tax guide
Homeowners insurance	Home age, size, construction and coverage	Insurance quotes before you write an offer
Mortgage insurance	Down payment under 20% on conventional loans; FHA has its own premiums	Your lender; see my PMI guide
HOA or condo fees	Amenities, building age and reserves	Listing details and the resale packet
Maintenance and utilities	Home age, size and systems	Plan roughly 1% to 2% of the home’s value per year for upkeep

Real estate tax rates vary by county, city and town across the region, so the same price can carry noticeably different taxes in Arlington, Fairfax, Loudoun, Prince William or Alexandria. My post on the true cost of owning a home goes deeper on the costs people tend to forget.

Step 3: Decide what you’re comfortable with

This is the step most online calculators skip. Before you look at houses, answer a few questions honestly:

1. What monthly housing payment would let you keep saving for retirement, emergencies and other goals?
2. How stable is your income? Bonuses, commissions or self-employment income may justify a more cautious number.
3. Are there big expenses coming, such as childcare, a car or tuition?
4. How long do you plan to stay? A short stay makes closing costs and price swings matter more.
5. How much cash do you want left after closing? Most buyers want several months of expenses in reserve.

Many of my buyers end up shopping a bit below their approval so the payment fits their life, not just the lender’s guidelines.

Step 4: Count the cash you’ll need

• Down payment: conventional loans can go as low as 3% to 5% down for eligible buyers, FHA requires at least 3.5%, and VA loans can require nothing down. Less down means a larger loan and usually mortgage insurance.
• Closing costs: in Virginia, buyers often pay roughly 2% to 3% of the price for lender fees, title, recordation tax and prepaid items. My closing cost estimator can help.
• Reserves: cash left in the bank after settlement. Some loans require it, and it protects you either way.
• Help that’s available: Virginia Housing and some local programs offer down payment and closing cost assistance for eligible buyers. See my post on down payment assistance.

Step 5: Check loan limits for your price range

In many parts of the country, a conforming loan tops out at the baseline limit. In high-cost areas like Northern Virginia, the limit is higher. According to the FHFA’s 2026 announcement, the baseline conforming limit is $832,750 and the high-cost ceiling for a one-unit home is $1,249,125. Above the limit that applies to your county, you’re in jumbo loan territory, with its own down payment, credit and reserve requirements. My post on jumbo loans covers those.

A worked example

The numbers below are illustrative only. They use an assumed 6.5% 30-year fixed rate for math purposes, not a current rate quote. Imagine a household earning $180,000 a year, or $15,000 a month gross, with $600 a month in other debt payments and $75,000 saved.

Item	Amount (illustrative)
28% front-end guideline	$4,200 per month
36% back-end guideline minus $600 other debt	$4,800 per month
Housing budget (lower of the two)	$4,200 per month
Price that fits the budget	About $570,000 with 10% down
Principal and interest on a $513,000 loan	About $3,243
Real estate taxes at an assumed 1% per year	About $475
Mortgage insurance at an assumed 0.5% per year	About $214
Insurance and HOA	About $275
Total monthly housing cost	About $4,207

Cash needed would be about $57,000 for the down payment, plus closing costs of perhaps $11,000 to $17,000, which would use nearly all of the $75,000 saved. If this household wanted a $3,800 monthly payment and more cash in reserve, the comfortable price would drop to roughly $510,000. Plug your own numbers into my affordability calculator to see your range.

Common mistakes

• Shopping at the top of your preapproval without testing the monthly payment against your actual budget.
• Leaving out taxes, HOA dues or mortgage insurance when estimating payments.
• Spending all your savings on the down payment and having no reserves.
• Taking on new debt, such as a car loan, between preapproval and settlement.
• Ignoring the cost of commuting, which can offset a lower price farther out.
• Assuming the tax assessment or list price is what the home is worth.

Frequently asked questions

How much income do I need to buy a house in Northern Virginia?

It depends on the price, down payment, rate, taxes, HOA fees and your other debts. Work backward from the monthly payment using DTI guidelines, then confirm with a lender’s preapproval.

What is the 28/36 rule?

It’s a traditional guideline that housing costs stay at or below about 28% of gross monthly income and total debts at or below about 36%. Many loan programs allow higher ratios, but these numbers are a sensible starting point.

Should I buy at the top of my preapproval?

Not necessarily. Preapproval shows what a lender will allow, not what fits your budget. Many buyers choose a lower price to keep savings and flexibility.

Does a lender count HOA fees in my debt-to-income ratio?

Yes. HOA and condo fees are part of your housing payment for DTI purposes, along with taxes and insurance. For your specific situation, talk with a licensed lender.