Investor Tool
Is This Rental Property Worth It?
Rental real estate can build wealth in ways most people never see on a monthly statement. This tool walks you through the four levers — then lets you run the real numbers on any property.
Part 1
The 4 Ways Rental Real Estate Builds Wealth
When you own a rental property, you don't just collect rent. You're building wealth through four distinct channels — and most investors only think about one of them. Here's what each lever actually does.
Cash Flow
This is the money left over each month after you collect rent and pay the mortgage, property taxes, insurance, HOA, maintenance, and any vacancy costs. Positive cash flow means the property pays you every month. Negative cash flow means you're subsidizing it. Neither is automatically good or bad — it depends on your goals and how the other three levers stack up.
Appreciation
Over time, most properties increase in value. You didn't earn that growth through monthly effort — it happened because of market demand, neighborhood development, and inflation. In the Houston metro, historical appreciation has averaged roughly 3–5% per year, though it varies by neighborhood and market cycle. You realize this gain when you sell or refinance.
Loan Paydown
Every mortgage payment has two parts: interest (the bank's fee) and principal (which reduces what you owe). Your tenant's rent is covering that payment — so your tenant is essentially paying down your debt for you. Each year, a larger portion of each payment goes toward principal. After 30 years, the loan is gone and you own the property free and clear.
Tax Benefits
Rental properties come with significant tax advantages. The biggest is depreciation — the IRS lets you deduct the cost of the building (not the land) over 27.5 years, even though the property may actually be gaining value. You can also deduct mortgage interest, property taxes, insurance, repairs, management fees, and travel related to the property. These deductions can offset rental income, reducing your overall tax burden. Talk to a tax professional for advice specific to your situation.
Why this matters
A property with slightly negative cash flow might still be an excellent long-term investment when you factor in appreciation, paydown, and tax benefits. That's the whole picture. The calculator below helps you see all four levers at once — not just the monthly number.
Part 2
Does This Property Make Sense?
Plug in the numbers for any rental property you're considering. The calculator will show you monthly cash flow plus estimated annual wealth building across all four levers.
Taxes, insurance, HOA, maintenance, vacancy allowance
Assumptions & Advanced Settings
These defaults are reasonable starting estimates for the Houston area. Adjust them if you have more specific data.
Houston-area historical average: 3–5%
Used to estimate tax benefit from depreciation
Texas-typical; used in depreciation basis estimate
Your Results
on a $225,000 loan
Monthly Cash Flow
−$158
Negative — but the full picture is different.
Annual Wealth Building
+$15,652
Even with slightly negative cash flow, this property builds meaningful wealth.
Estimated Annual ROI
15.7%
on cash invested (down payment + closing est.)
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This tool provides estimates for educational purposes only. It does not account for property management fees (typically 8–10% of rent), capital expenditure reserves, HOA special assessments, closing costs, or specific lender fees. Depreciation and tax calculations are simplified estimates — consult a CPA or tax advisor for personalized advice. Appreciation rates are historical averages and are not guaranteed.