Investing in St. Johns County, FL Real Estate: The Actual Numbers

Considering rental property in St. Johns County, FL? The typical home ($492,832, Zillow) against typical rent ($2,078/mo, Zillow Observed Rent Index) works out to a 5.1% gross cap rate. Gross is where analysis starts, not ends — below is the investor cost stack that turns it into a real number, and the demand-and-supply data that decides whether the rent holds.

St. Johns County yield at a glance

5.1%

Gross cap rate

$492,832

Typical value (Zillow)

$2,078/mo

Typical rent (ZORI)

19.8

Price-to-annual-rent

3.43%

After tax + insurance (approx.)

The investor cost stack, worked

Start with $24,937 of gross annual rent. Property tax: investors get NO homestead exemption and no 3% cap — at St. Johns County’s typical 13.47 mills on a $492,832 assessment, roughly $6,638 a year (non-homestead assessments can still rise up to 10% annually). Insurance: Citizens averages about $1,378/yr here, and landlord (DP-3) policies typically price above owner-occupied. That already takes the yield to about 3.43% before vacancy, maintenance, management and any HOA — the line items that separate real operators from spreadsheet optimists.

Will the rent hold? Demand and supply

Rent growth here is running +0.6% (Zillow index). On demand, IRS migration data shows a net 10,642 people per year into the county; on supply, builders pulled 4,735 residential permits in 2025. Rising rents plus positive migration plus a restrained pipeline is the configuration that protects yields; the reverse erodes them. Our valuation model currently reads the county as undervalued by 5.6% versus income-and-rent fundamentals.

Where investors actually buy here

Community-level medians, days on market and price trends for every tracked St. Johns County community are on the county’s community and lifestyle pages — start with the affordability ranking and the county rent page (full rent-versus-own math).

The St. Johns County market, in context

St. Johns County is the premium county of Northeast Florida and home to the #1-rated public school district in the state. Anchored by historic St. Augustine, the Ponte Vedra Beach golf-and-ocean corridor, and the explosive Nocatee and SilverLeaf master plans along the World Golf Village spine, it commands the region's highest prices — and its fastest population growth. Buyers pay a premium here for schools, new construction, and a beach-adjacent lifestyle.

The economy behind the market: {'drivers': 'healthcare, professional golf, education, tourism, and professional services', 'summary': "St. Johns blends a fast-growing healthcare and professional-services base with two unusual anchors: the PGA Tour, headquartered in Ponte Vedra Beach alongside THE PLAYERS Championship at TPC Sawgrass, and a heavy commuter relationship with Duval's Jacksonville job market. Flagler Health+ / UF Health St. Johns is a major local employer, the county school district is itself one of the largest employers, and tourism around St. Augustine — the oldest city in the U.S. — runs year-round. Many residents earn Duval-Southside paychecks while living for the schools and beaches.", 'employers': ['St. Johns County School District', 'Flagler Health+ / UF Health St. Johns', 'PGA Tour (Ponte Vedra Beach HQ)', 'St. Johns County government', 'Northrop Grumman', 'VyStar Credit Union', 'Publix', 'Walmart', 'World Golf Village / hospitality'], 'jobNote': 'The PGA Tour is headquartered in Ponte Vedra Beach, home of THE PLAYERS Championship at TPC Sawgrass.'}

What could change it: The headline risks are price and water. St. Augustine and the barrier islands flooded in Hurricanes Matthew (2016) and Irma (2017), so storm surge and flood-zone status are central to true cost near the coast and the rivers. Affordability is stretched — this is the most expensive county in the region — and rapid growth in the Nocatee/SilverLeaf corridor is straining roads and schools even as the district adds capacity. Insurance, as everywhere in coastal Florida, is rising.

Near-term outlook: Expect St. Johns to stay among the most resilient markets in Northeast Florida over the next 12 months. School demand and in-migration keep a firm floor under prices, but affordability at the top of the regional range and rate sensitivity will keep appreciation modest and lengthen days on market on anything mispriced. New-construction volume in Nocatee and SilverLeaf gives buyers real leverage on builder inventory.

Next: current homes for sale in St. Johns County, DSCR loans in Florida, 1031 exchanges into Florida, Florida tax deed sales.

Run the numbers in St. Johns County

Common questions

What is the cap rate in St. Johns County, FL?

About 5.1% gross - typical Zillow value against typical ZORI rent. After typical property tax (no homestead benefits for investors) and average insurance, roughly 3.43% before vacancy, maintenance and management.

Do investors pay more property tax in Florida?

Effectively yes: non-homestead property gets no $25-50K exemption and no 3%% Save Our Homes cap - assessments can rise up to 10%% per year, and the assessment resets to roughly your purchase price when you buy.

Is St. Johns County a good place to buy rental property?

That depends on your basis, financing and operations - this page gives the inputs: 5.1% gross yield, the tax-and-insurance stack, +0.6% rent growth, and migration and permit data. Not investment advice; run your own underwriting.

Figures from Zillow research series, Zillow Observed Rent Index, verified county millage, Citizens Property Insurance, IRS SOI migration and Census permits, as of 2026-09-11; deemed reliable but not guaranteed. Informational only - not investment, tax or legal advice. Equal Housing Opportunity.