Mortgage Rates Just Crossed 7%. Here Is What That Means for Buyers in Palm Beach County and the Treasure Coast.

The average 30-year fixed mortgage rate crossed 7% last week for the first time in about 20 months. If you have been house hunting since spring, you have watched the same house get more expensive every week without the price changing at all.

Here is what actually happened, what it does to the monthly payment on a typical home in each of the three counties we cover, and what you can still do about it.

What happened

Freddie Mac's weekly Primary Mortgage Market Survey put the average 30-year fixed rate at 7.03% on September 24, 2026. That is up from 6.95% the week before and 6.30% a year ago. The 15-year fixed averaged 6.42%, up from 5.49% a year ago.

A few things make this week notable:

• It is the first reading above 7% since January 16, 2025, when the 30-year averaged 7.04%, according to Freddie Mac's data series on FRED.
• It is the fifth straight weekly increase. The run started at 6.65% in late August, and the biggest single jump came the week of September 17.
• Both the 30-year and the 15-year rose in each of those five weeks.

Why rates went up

Mortgage rates follow the 10-year Treasury yield far more closely than they follow the Federal Reserve, and the 10-year has had a rough year. It closed at 3.97% at the end of February and at 5.18% on September 24, according to Treasury data on FRED.

The main pressure has been inflation, and most of it has come from energy. As the Associated Press reported, rates have climbed since U.S. and Israeli strikes on Iran in late February. Oil followed: Brent crude went from about $71 a barrel at the end of February to a peak near $131 in mid-September. The August consumer price report showed overall inflation at 3.4% over the year, with gasoline up 27.4%. The Bureau of Labor Statistics said gasoline alone accounted for more than a third of August's monthly increase.

Then, on September 16, the Federal Reserve raised its benchmark rate a quarter point to a range of 3.75% to 4.00%, its first increase since July 2023. The vote was unanimous, and the statement said simply that inflation remains elevated.

The real payment math

Headlines talk about rates. What you actually live with is the payment. Here is principal and interest on the median single-family sale price in each county, from the August 2026 county market reports (MIAMI REALTORS® and RWorld, based on Florida Realtors® data), with 20% down on a 30-year fixed loan.

Palm Beach County — median $650,000, loan $520,000

• At 6.30% (a year ago): about $3,219 a month
• At 7.03% (now): about $3,470 a month
• Difference: about $251 a month, or roughly $3,000 a year

Martin County — median $656,900, loan $525,520

• At 6.30%: about $3,253 a month
• At 7.03%: about $3,507 a month
• Difference: about $254 a month

St. Lucie County — median $402,500, loan $322,000

• At 6.30%: about $1,993 a month
• At 7.03%: about $2,149 a month
• Difference: about $156 a month

Another way to see the same thing: the payment that bought a $650,000 house a year ago now buys a house of roughly $603,000 with the same 20% down. Over the full 30 years, the extra 0.73 points on that $520,000 loan adds up to about $90,000 more in interest.

These figures are principal and interest only. Property taxes, homeowners insurance, flood insurance where it applies, and any HOA or condo fees come on top. Insurance is the one that surprises most buyers here. Our guide to Palm Beach County home insurance rates covers what is changing and what still sets the premium on a specific house.

One more thing worth knowing: a $520,000 loan is well inside the 2026 conforming loan limit of $832,750, which applies to a one-unit home in all three counties. Above that, you are into jumbo financing, which is priced differently. The 2026 FHA limit for a one-unit home is $667,000 in Palm Beach County and $603,750 in Martin and St. Lucie counties, per HUD's lookup.

Cash buyers and financed buyers are in different markets

A lot of Palm Beach County does not feel mortgage rates directly. In August 2026, 465 of the 1,112 single-family homes that closed in Palm Beach County were bought with cash, about 42%. For condos and townhomes it was 438 of 765, about 57%.

The Treasure Coast leans the other way. In Martin County, 66 of 181 single-family closings were cash, about 36%. In St. Lucie County it was 112 of 444, about 25%. That means three out of four St. Lucie single-family buyers were financing, which makes St. Lucie the market in our area most exposed to rate moves.

What that means for you as a financed buyer: in cash-heavy segments, you may be competing against people who do not care what rates are doing. In financed segments, a rate spike tends to thin out the buyer pool, which can give you more room to negotiate on price and terms.

Should you wait for rates to come down?

Nobody can tell you where rates are going, and anyone who says they can is guessing. What we can tell you is what the professional forecasters expected before this latest jump.

Fannie Mae's September forecast had the 30-year averaging 6.8% in the fourth quarter of 2026 and 6.7% through all of 2027. The Mortgage Bankers Association's September forecast was similar: 6.8% into early 2027, easing to 6.7% by year end. Both were built before rates reached 7.03%, and neither expects a return to the low 6s any time soon.

So the honest framing is not "wait for 5%." It is closer to this: if the right house comes along, the rate is one variable among several, and it is the one you can most easily change later. You can refinance a rate. You cannot refinance a purchase price, a flood zone, a lot or a commute. But refinancing costs money and depends on rates actually falling, so only buy at a payment you can carry at today's rate.

What you can negotiate instead

When rates rise, the price is not the only lever. Several others can matter more to the monthly payment.

Seller-paid rate buydowns. Instead of a price cut, the seller pays to lower your rate. A temporary 2-1 buydown, for example, cuts the rate by two points in year one and one point in year two before it settles at the note rate. On a $520,000 loan at 7.03%, that would bring the payment to about $2,801 in year one and $3,128 in year two, compared with $3,470. It costs the seller about $12,100 up front. A permanent buydown with discount points lowers the rate for the life of the loan. Which one is worth more depends on how long you expect to keep the loan, so run both with your lender.

Rate locks. A rate lock holds your quoted rate for a set period while you close. When rates are rising week over week, the length of the lock and what it costs to extend it are worth asking about before you go under contract.

Builder incentives. New-construction builders often use their own lender to offer a reduced rate or closing-cost credit. Compare the whole package, including the price, against an outside lender's offer. A lower rate on a higher price is not always the better deal.

Down payment assistance. Florida Housing's Hometown Heroes program lists assistance of up to 5% of the first mortgage, between $10,000 and $35,000, as a 0% deferred second mortgage, with income and loan limits. Its other homebuyer programs are listed as current too. Funding comes in rounds and has run out before, so confirm availability with a participating lender before you count on it.

If you are selling

Higher rates shrink what a financed buyer can pay each month. A buyer who was comfortable at $650,000 last September may be shopping closer to $600,000 today for the same payment. Offering a buydown credit instead of a price reduction can keep your sale price intact while solving the buyer's real problem, which is the monthly number. It is worth discussing with your agent before you cut the price.

What to do this week

• Get a fresh pre-approval at today's rate. One from the summer may overstate what you qualify for.
• Ask your lender to price the same loan three ways: at the note rate, with a 2-1 temporary buydown, and with one permanent discount point.
• Get an insurance quote early, during your inspection period rather than after it. Quotes on the same house can vary widely between carriers.
• Decide on the monthly payment you are comfortable with, then work backward to a price, not the other way around.

This article explains how mortgage rates and financing work and summarizes public data. It is not financial or lending advice. Rates, programs and loan limits change, and your own rate depends on your credit, loan type and down payment. Talk with a licensed mortgage professional before you make a decision.