A relocating family lands on a listing portal, sees that homes in St. Johns County sold at a median of $513,000 over the three months ending May 2026 per Redfin, and starts building a budget around that figure. Two months later, at the closing table, the actual monthly payment is several hundred dollars higher than the spreadsheet predicted. Nothing went wrong. The spreadsheet was just built on the wrong number.
The list price sets your loan. Three other mechanisms — a Community Development District bond, a Save Our Homes reset, and a five-year residency clock buried in a proposed constitutional amendment — set what you actually pay each month. In St. Johns County, all three are load-bearing, and none of them show up on the portals.
This is the piece of the market that only surfaces once you are already under contract. Here is how to price it in before you write the offer.
The line item on the tax bill that costs more than the property tax
Master-planned communities across St. Johns County finance their roads, stormwater lakes, amenity centers, and entrance features through Community Development Districts, which are special-purpose local governments created under Chapter 190 of the Florida Statutes. In Nocatee, that district is the Tolomato CDD, which runs its fiscal year from October 1 through September 30 and splits each parcel's assessment into a debt-service portion (paying down the infrastructure bonds) and an operations and maintenance portion. The debt-service piece typically runs for about thirty years from bond issuance.
Practically, that means a home advertised at $600,000 in a CDD community carries an annual bond payment somewhere in the $1,200 to $3,500 range on top of ad valorem taxes, depending on lot type and phase. In one carrying-cost model published by a Northeast Florida brokerage in mid-2026, a $600,000 home in some Nocatee sections runs roughly $11,500 per year in combined property tax, HOA, and CDD, before insurance and mortgage. The same $600,000 list price in a non-CDD St. Johns submarket carries none of that debt-service line.
Here is what that looks like once you break it out on a $600,000 homesteaded home in unincorporated St. Johns County, using the current countywide millage of roughly 13.47 mills:
| Cost component | CDD community (e.g., a Nocatee, RiverTown, or Durbin Crossing section) | Non-CDD St. Johns submarket |
|---|---|---|
| Ad valorem tax (after $50K homestead) | ~$7,400 / yr | ~$7,400 / yr |
| CDD assessment (debt + O&M) | $1,200–$3,500 / yr | $0 |
| HOA dues | Varies (Nocatee ~$1,650; higher in gated) | Often $0–$800 |
| Approximate annual total before insurance | ~$10,250–$12,500 | ~$7,400–$8,200 |
Two homes at the same list price, two very different monthly numbers. Nocatee spans multiple villages and phases, and it is common for the district structure to vary by section, so two houses on the same street can carry different assessments and different bond maturity dates. That is why the CDD amount and the years remaining on the bond belong on the same page of the buyer worksheet as the list price, not on a separate one.
Save Our Homes doesn't travel with the house
The second mechanism is quieter, and it catches move-up sellers as often as it catches relocators. Florida's Save Our Homes cap limits how much a homesteaded property's assessed value can rise each year while the same owner holds it. When the home sells, the cap resets. The new owner's assessed value snaps to market, and the tax bill printed on the current MLS listing (or on the seller's most recent statement) is almost always lower than what the incoming owner will actually pay.
If a seller has owned a home in Rivertown or Julington Creek Plantation since 2016, their tax figure reflects a decade of capped growth. Your figure at closing does not. Any budget built from the listing's "annual taxes" line without adjusting for the reset is a budget built on the previous owner's history.
The January 2027 clock most relocation guides are ignoring
Governor DeSantis called a special legislative session for June 1 through 3, 2026 aimed at placing a homestead property-tax-elimination amendment on the November 2026 ballot. The proposal requires 60% approval in both legislative chambers and then 60% at the ballot, with phased implementation beginning no earlier than January 2027.
The clause inside that proposal that changes the relocation calculus is the five-year residency requirement. Under the current draft, anyone who establishes Florida residency after January 1, 2027 would need to hold that residency for up to five years before qualifying for the expanded homestead exemption. Longtime Florida owners get the relief on day one; a family moving from Ohio to Nocatee in March 2027 could wait until 2032.
Nothing about that is decided yet. The amendment has to pass the legislature and then the voters. But if your move to St. Johns County is on a 2026-versus-2027 fence, the timing of your closing has become part of the transaction, not just a scheduling detail. Buyers who close and homestead before January 1, 2027 would be positioned to receive whatever relief passes from the start. Buyers who close after would not.
Builder incentives look bigger than they are
The third piece of the puzzle sits inside every model home in SilverLeaf, Shearwater, Beacon Lake, Aberdeen, and the newer RiverTown phases. Northeast Florida builders in 2026 are running some of the strongest incentive packages in years, and the top of the list is almost always a rate buydown paired with closing-cost credits and design-center allowances. The reason those show up instead of a straight price cut is straightforward: a $30,000 credit does not lower the appraised value for the neighbors who already closed, but a $30,000 price cut does.
Two practical consequences for the buyer:
- Design-center credits do not reduce cash to close, and they only save money on upgrades you were actually going to buy. Applied to structural options like flooring, wiring, or extra outlets, they preserve real value. Applied to cosmetics, they inflate the ticket.
- Most builders will not allow you to add buyer representation if you register at the sales center on your own first. Bring your agent to the initial visit or the door closes.
Rate buydowns are the incentive most worth interrogating. A temporary 2-1 structure lowers your payment for two years, then reverts to the note rate. The savings are real for those two years, but the underwriting has to work at the full rate, and the long-term math depends on whether you refinance before year three.
How the submarkets actually sort once you price the frictions in
Once CDD, HOA, and the tax reset are all in the same column, the choice between St. Johns submarkets stops being a choice between list prices and starts being a choice between what those recurring dollars deliver.
- Nocatee carries higher CDD and modest HOA, and the trade is the largest amenity footprint in the region, including the Splash Water Park, multiple amenity centers, and the greenway trail system.
- RiverTown trades CDD dollars for the St. Johns River frontage, the RiverHouse, and the amenity core near the water.
- Durbin Crossing, Twin Creeks, and Shearwater each anchor to a signature amenity that the CDD bond originally financed.
- Older sections of Julington Creek Plantation and other established St. Johns neighborhoods often carry no CDD at all, which changes the monthly math even where the list price looks similar.
The honest way to compare them is not price against price. It is total monthly cost against the amenities and school access your household will actually use. A retired couple pays for Nocatee's water park whether they set foot in it or not.
Quick FAQ
Can a CDD bond be paid off early? Sometimes. The Tolomato CDD, for example, issues estoppel letters (currently $250 each) that quote the approximate debt-service payoff on a specific parcel. Whether prepayment makes financial sense depends on the bond's remaining term and your holding horizon.
Does the CDD assessment go into my mortgage escrow? It is collected on the annual St. Johns County property tax bill as a non-ad valorem line item, so lenders that escrow taxes typically escrow it as well. Confirm with your loan officer, because the escrow cushion is what protects you from an underfunded first year.
If the property-tax amendment fails in November, does anything change? No. The current homestead rules stay in place, and the 2027 residency clock disappears with the amendment.
What is the fastest way to see a specific home's true monthly cost? Pull the current St. Johns County tax bill, the CDD's most recent adopted budget, and the HOA disclosure for that parcel, then add insurance and mortgage. Any of those three documents alone is misleading. Together they tell you what you will actually write a check for.
If you are weighing a move into St. Johns County and want a side-by-side of what a specific address really costs to own, The Coastal Home Group will pull the CDD, HOA, and tax reset math for the homes you are considering before you write the offer. Find Your Coastal Home.
