Quick answer
The median home in St. Petersburg costs $420K. With 20% down ($84K) at 7% for 30 years, the monthly payment is $2,235/month. Total interest paid over 30 years: $468,750.
Calculator · FL · 2026
Mortgage Calculator for St. Petersburg, FL (2026)
Pre-filled with St. Petersburg's median home price of $420K. Compare payments across down payment sizes and loan terms at the current 7.0% baseline rate.
Last updated: April 23, 2026
St. Petersburg Mortgage Payment Scenarios
Median home price: $420K · Interest rate: 7% · Excludes property taxes and insurance.
| Down Payment | Down ($) | Loan Amount | 30-yr/mo | 15-yr/mo | Total Interest (30yr) |
|---|---|---|---|---|---|
| 5% | $21,000 | $399,000 | $2,655 | $3,586 | $556,641 |
| 10% | $42,000 | $378,000 | $2,515 | $3,398 | $527,344 |
| 20% | $84,000 | $336,000 | $2,235 | $3,020 | $468,750 |
PMI required for <20% down — add ~$100–300/month to payments above.
Rent vs Buy in St. Petersburg
Monthly cost comparison based on median prices — 20% down, 30-year mortgage at 7%.
Buying (median home)
+ builds equity in $420K asset
Renting (2-bedroom)
Flexibility to move; no equity built
Amortization Over Time
$420K home · 20% down ($336K loan) · 7% · 30 years
Year 1
Year 15
Year 30 (Final)
Frequently Asked Questions
What is the monthly mortgage payment for a home in St. Petersburg?
The median home price in St. Petersburg is $420K. With 20% down and a 30-year loan at 7%, the monthly payment is $2,235. Adding estimated property taxes and insurance brings total monthly costs to approximately $2,655.
Is it cheaper to rent or buy in St. Petersburg?
A 2-bedroom rental in St. Petersburg averages $2,100/month. Buying the median $420K home with 20% down costs approximately $2,655/month (mortgage + taxes + insurance) — $555 more than renting. However, buying builds equity while renting does not.
How much do I need to earn to buy a home in St. Petersburg?
Using the 28% housing rule, you need at least $96K–114K in annual gross income to comfortably afford the median $420K home in St. Petersburg with 20% down. You also need $84K+ saved for the down payment plus 2–5% in closing costs.
What are property taxes like in St. Petersburg?
FL has a state income tax rate of None. Property taxes vary by county but on a $420K home, expect $350–$700/month in property taxes (1–2% annual rate). This is in addition to your mortgage payment.