Builder promotions around St. Cloud this October have advertised 3.99%, 4.25% and 4.5%. Freddie Mac's weekly survey puts the average 30-year fixed rate at 7.40% for the week of October 15, 2026. A three-point gap looks like a reason to cross resale homes off the list. But each of those headline rates comes through the builder's own lender. The one set of terms that says who pays, Mattamy's, has the seller funding the buydown. And the federal limits on seller-funded buydowns apply in exactly the same way to someone selling a ten-year-old house on a cul-de-sac.
The terms hold the first surprise. To get Mattamy Homes' current offer, a buyer has to pre-apply with Mattamy Home Funding before submitting an offer, finance through that lender, and close with the closing agent the seller picks. The terms also state that buyers aren't required to use either one to buy the home. They just don't get the promotion without both. When you compare that against a resale home, you're comparing a house plus a lender plus a title arrangement against a house you can finance anywhere.
Four Offers, Four Different Products
Here is what St. Cloud-area builders were advertising in October 2026, translated out of banner language.
| Builder and community | Headline | What the loan actually is | APR shown | Strings and window |
|---|---|---|---|---|
| Taylor Morrison, The Waters at Center Lake Ranch, 5292 Goldfinch Drive, from $433,999 | 4.25% | FHA 5/1 adjustable-rate mortgage; rate adjusts annually starting in year six | 6.32% | Through Taylor Morrison Home Funding; no end date printed |
| Lennar, greater Orlando promotion including St. Cloud | 4.5% | FHA 5/1 ARM, plus up to $35,000 off and up to $5,000 in Flex Credit on select homes | 7.620% | Lennar Mortgage required; contracts signed October 19 to 25, 2026 |
| Mattamy Homes, Lakeside at Satilla, 5015 Orinoco Lane, from $374,990 | 3.99% | First-year payment rate on a temporary buydown of a 5.99% FHA 30-year fixed loan | 6.784% | Mattamy Home Funding and seller's closing agent; contracts October 2 to 31, closing by November 30, 2026 |
| D.R. Horton, Preston Cove | Red Tag pricing | Price reductions, with no rate buydown stated on the community page | None stated | Event runs October 9 to November 1 |
By the time you read this, Lennar's window has closed and Mattamy's ends October 31. Builders reset these offers constantly, though, and the structures repeat. Once you can read one, you can read the next.
The Number on the Sign and the Number in Year Six
A 5/1 ARM, as the Consumer Financial Protection Bureau defines it, holds its first rate for five years and then adjusts once a year. After the intro period, the rate is generally an index plus a margin, held in check by initial, subsequent and lifetime caps.
The APR column helps with the comparison, but only so far. Lennar's 4.5% ARM carried a 7.620% APR, which is higher than Freddie Mac's 7.40% average for a 30-year fixed loan in mid-October. APR folds in points and other charges. The CFPB also warns that on an adjustable loan, "the APR does not reflect the maximum interest rate of the loan." For an ARM, the year-six question gets answered by the caps on the loan estimate. The banner won't tell you.
Mattamy's offer works differently. The note is a 5.99% FHA fixed loan, and the 3.99% is a first-year payment rate, paid down by a temporary buydown fund the seller agrees to cover at closing, up to $10,275.60. On conventional loans, Fannie Mae's guide requires the borrower to qualify at the note rate, not the bought-down rate. That means the payment a lender underwrites is the full one, not the year-one one.
When the Seller Pays for the Rate, the Caps Don't Care Who the Seller Is
Look at a seller-funded buydown from the lender's side and it's money. HUD's FHA handbook limits interested-party contributions to 6% of the sales price. It spells out that the cap covers "Interested Party payment for permanent and temporary interest rate buydowns, and other payment supplements." Anything past the cap, or past the buyer's actual closing costs, prepaids and discount points, gets treated as an inducement to purchase. HUD put out a newer handbook update in August 2026, so confirm the current text through HUD's handbook page.
For conventional loans, Fannie Mae's Selling Guide B3-4.1-02 scales the limit to the down payment on a primary residence or second home:
- 3% when the loan-to-value ratio is above 90%
- 6% between 75.01% and 90%
- 9% at 75% or less
- 2% on investment property, at any loan-to-value
Fannie names the seller, the builder or developer, and their affiliates as interested parties. When one of them, or a lender affiliated with one, funds a buydown subsidy for a specific loan, it counts toward the same limit.
Run Mattamy's own example through that. The disclosed scenario is a $472,000 purchase, with up to $10,275.60 going to the buydown fund. That works out to roughly 2.2% of the price. A homeowner in an established St. Cloud subdivision who is selling to an FHA buyer works under the same 6% ceiling. Nothing in these rules reserves rate buydowns for builders.
What a Builder Brings That a Resale Seller Usually Doesn't
The real difference is plumbing. Mattamy's promotion terms say it has "locked in, through Mattamy Home Funding, LLC... a fixed interest rate for a pool of funds," and that the rate lasts until the pool runs dry or expires. A builder closing dozens of homes can pre-arrange financing at volume. A single resale seller pays for a buydown one transaction at a time, through whatever lender the buyer picks.
The rules acknowledge that difference too. Fannie Mae's guide says standby, or forward, commitments between a builder and a lender for blanket rate coverage, signed before any sales contract exists, aren't subject to its concession limits, because they aren't tied to one specific loan. A homeowner selling one house has no such arrangement to draw on.
Federal rules govern how that affiliated-lender link has to be presented. Under Regulation X, section 1024.15, an affiliated business arrangement requires a written disclosure of the relationship and estimated charges. The safe harbor depends on the referring party not requiring use of that provider. The CFPB's RESPA FAQ says a provider generally may offer a consumer an incentive for doing business with it. That's the structure in the Mattamy terms. The lender is optional, and the discount is attached to it.
D.R. Horton's Preston Cove event takes the other route and moves the price itself. At 280 Preston Cove Drive, a 1,553-square-foot, three-bedroom two-story was listed at $324,990, down from $338,990. A 2,077-square-foot, five-bedroom single-story at 5750 Springer St was $425,000, down from $449,490. Another home at 5851 Cool Spring Cove dropped from $515,990 to $483,950. Under Fannie Mae's rules, a financing concession that stays within the percentage limit and doesn't exceed the buyer's closing costs is measured against the contract price. Any amount beyond either line is treated as a sales concession and subtracted from the sales price. A cut like the ones at Preston Cove lowers the price outright. That changes the loan amount, the down payment and the recorded sale.
Osceola's September Numbers Show Resale Sellers Already Negotiating
The Osceola County single-family report for September 2026, published through the Osceola County Association of REALTORS, describes a market that's moving on price:
- 471 closed sales, up 7.8% from September 2025
- A $410,000 median sale price, down 4.4% from $429,000
- A 49-day median time to contract, down from 57 days
- 6.1 months of supply
- A median sale at 96.1% of original list price
More sales at a lower median, a little faster, means homes are selling because sellers are meeting buyers. On a $410,000 home, the gap between 96.1% and full list is roughly $16,000. That's larger than the buydown fund in Mattamy's example. The county report doesn't split new construction from resale, so these figures cover both. What they show is that negotiating room exists across the market. Some builders present their share of it as a rate.
The new-home pipeline isn't slowing down, either. Sunbridge announced in May that Taylor Morrison broke ground on Heron Bay, a 526-home community starting in the low $500,000s. In March it announced that ICI Homes would begin with 19 custom homes at Weslyn Park, priced in the $700,000s.
Putting a Builder Offer and a Resale Offer on the Same Page
Turning both offers into dollars takes a few questions, most of them for your lender:
- What is the note rate? For a temporary buydown, it's the rate under the promotion, like Mattamy's 5.99%. For an ARM, ask for the caps and the margin in writing.
- How many dollars does the incentive represent? A buydown fund, a price cut and a closing-cost credit can all be stated as a dollar figure. Seller-paid buydowns and credits count against the concession limits, while a price cut lowers the price itself.
- What does the incentive require? List the required lender, the closing agent, the contract window and the close-by date. Then ask a lender of your choosing to quote the same house without the promotion.
- What would a resale seller do with the same dollars? With roughly 6% of price allowed for FHA buyers, and 3% to 9% on conventional loans depending on your down payment, a resale seller can put a credit or buydown on the table within those rules.
This post is general information, not legal or financial advice. Loan programs and concession limits depend on your situation, so confirm the details with your lender and other qualified professionals before you sign.
A Few Direct Questions
Is a 3.99% first-year rate the same as a 3.99% mortgage? No. In Mattamy's October promotion, 3.99% is the first-year payment rate on a 5.99% FHA fixed loan, and a seller-funded temporary buydown covers the difference.
Can a resale seller offer a rate buydown? Federal guidelines treat any seller as an interested party. HUD's FHA limit and Fannie Mae's conventional limits explicitly include buydowns paid by interested parties, so the rules don't limit them to builders.
Do I have to use the builder's lender? The builder terms reviewed here say financing through the affiliated lender isn't required to buy the home, only to get the promotion.
If you're weighing a St. Cloud builder's rate offer against a resale home, McQuade Home Team can help you put both in dollars, from the concession amount and the contract terms to what a resale seller might be willing to fund. Schedule a consultation and bring the incentive sheet with you.
