The real math behind home affordability — plus how flat-fee buyer representation puts thousands back in your pocket at closing.
It's the first question every homebuyer asks: What can I actually afford? The answer depends on your income, debts, down payment, interest rates, and — here's what most people miss — how much of the buyer agent commission you keep.
This guide walks through the real affordability math, the lending rules banks use, and how a flat-fee brokerage like ShopProp changes the equation by returning thousands at closing.
Most lenders use the 28/36 rule as a starting point for determining how much you can borrow:
Here's what different income levels can typically afford in 2026, assuming a 6.5% mortgage rate, 20% down payment, and standard property taxes/insurance:
| Household Income | Max Monthly Housing | Approx. Home Price | ShopProp Buyer Rebate |
|---|---|---|---|
| $75,000 | $1,750 | $300,000 | $3,005 back |
| $100,000 | $2,333 | $420,000 | $6,005 back |
| $150,000 | $3,500 | $625,000 | $11,130 back |
| $200,000 | $4,667 | $850,000 | $16,755 back |
| $300,000 | $7,000 | $1,300,000 | $28,005 back |
Standard affordability tools calculate your max loan amount — but they ignore several costs that shrink your real budget:
On a $600,000 home, expect $12,000–$30,000 in closing costs — title insurance, lender fees, escrow, inspections, appraisal. This is real money that comes out of your pocket at the closing table.
Since the 2024 NAR settlement, buyer agent compensation is no longer guaranteed. Some buyers are now paying their agent's fee directly. If you're on the hook for 2.5% on a $600,000 home, that's $15,000. With ShopProp's flat $4,495, the math shifts dramatically.
A $10,505 buyer rebate (on a $600K home via ShopProp) could buy down your mortgage rate by approximately 0.375–0.5%, saving you tens of thousands over the life of the loan. Most buyers don't realize their choice of brokerage directly impacts their monthly payment.
Pre-approval means the lender has verified your income, assets, and credit. Pre-qualification is just an estimate. In competitive markets like Seattle, San Francisco, or Austin, sellers won't look at offers without a pre-approval letter.
Principal + interest + property taxes + homeowner's insurance + HOA + PMI (if under 20% down). Many buyers forget property taxes vary wildly by state — Texas has no income tax but property taxes of 1.8–2.5%, while Washington has no income tax with ~1% property tax.
Don't drain your savings for the down payment. You'll need 2–5% of the purchase price for closing costs, plus 3–6 months of reserves. A buyer rebate from ShopProp can offset much of this.
After the NAR settlement, this is no longer optional. If the seller isn't covering buyer agent commission, you're paying it. The difference between 2.5% and a flat $4,495 is thousands — sometimes tens of thousands — of dollars.
Can you still afford the payment if rates rise 1%? If one income source drops? If you need a major repair in year one? Buy what you can comfortably afford, not what a lender says you can borrow.
Here's what most buyers don't realize: your choice of real estate agent directly impacts how much house you can afford.
With a traditional 2.5% buyer's agent, every dollar of your home's price increases the commission. On a $1M home, you're paying (or the seller is paying) $25,000 for buyer representation. With ShopProp's flat $4,495, the remaining $20,505 comes back to you as a rebate at closing.
That $20,505 can:
And unlike percentage-based agents, every ShopProp transaction includes a managing broker — a licensed broker with construction and finance experience reviewing every document, disclosure, and contract. The oversight doesn't drop because the fee is flat.
| State | Median Home Price | Buyer Rebate (2.5% - $4,495) | Property Tax Rate |
|---|---|---|---|
| California | $785,000 | $15,130 | ~0.75% |
| Washington | $615,000 | $10,880 | ~1.0% |
| Hawaii | $750,000 | $14,255 | ~0.3% |
| Colorado | $545,000 | $9,130 | ~0.5% |
| Arizona | $425,000 | $6,130 | ~0.6% |
| Texas | $345,000 | $4,130 | ~1.8% |
| Virginia | $400,000 | $5,505 | ~0.8% |
| Michigan | $260,000 | $2,005 | ~1.5% |
Just because a lender approves you for $750K doesn't mean you should buy at $750K. Leave room for life — maintenance, travel, savings, emergencies.
Post-NAR settlement, buyer commissions are negotiable. The difference between 2.5% and a flat $4,495 is $10,000–$50,000+ on most homes. That's not a rounding error — it's a down payment on a car.
Budget 1–2% of home value annually for maintenance. On a $600K home, that's $6,000–$12,000/year for roof repairs, HVAC, plumbing, appliances. It adds up fast.
A $10K buyer rebate used to buy down your rate by 0.375% saves ~$150/month — that's $54,000 over a 30-year mortgage. Always run the numbers before pocketing the rebate.
Timing the market is nearly impossible. What you can control: your agent's fee structure, your pre-approval strength, and your offer strategy. Focus on controllable variables.
See exactly how much you'd save with ShopProp's flat-fee buyer representation — and what that means for your budget.
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