What is a lower interest rate worth when it comes attached to a higher price, one lender and an end date?
That question sits under almost every new-construction tour in Ada County this fall. On Oct. 1, Freddie Mac's national 30-year fixed average reached 7.28%, its highest mark since October 2023, as the Idaho Statesman reported. That same month, Treasure Valley builders were advertising first-year rates as low as 4.25%. In September 2026, the median new home in Ada County sold for about $61,600 more than the median resale home. Builders here are competing on the monthly payment. Resale sellers are competing on price. A buyer comparing the two is weighing a subsidy that expires against a purchase price that stays with the house.
The Rate Comes With a Lender and a Calendar
Start with the conditions, because that's where buyers get caught off guard. The most-advertised offer this month is CBH Homes' Life Upgrade promotion. It's a 2/1 buydown financed through CBH's preferred lender. Here is how CBH lays out the rate schedule:
- Year one at 4.25%
- Year two at 5.25%
- Years three through 30 at 6.25%, with a 7.05% APR across the loan
The advertised rate is the first-year rate. The rate the loan settles into for 28 of its 30 years is two full points higher. CBH's own comparison chart shows a payment of $1,434 a month at 4.25% next to $2,063 a month at 7.625%. It labels the $629 gap as "Year 1 savings." The chart says year one because that is the only year the full gap applies.
The second condition is that the offers don't stack. CBH lets buyers swap the buydown for a cash credit instead. The credit is $15,000 on homes priced $399,999 and below, $20,000 from $400,000 to $499,999, $25,000 from $500,000 to $749,999, and $30,000 at $750,000 and up. A 2% lender credit and a refrigerator, washer and dryer come with it. CBH states plainly that this option is "in place of the 4.25% promotional rate, not in addition to." Contracts must be written between Oct. 1 and Oct. 31, 2026.
The third condition is the calendar. Hubble's fixed-rate offers and Lennar's Super Deals took their last contracts on Oct. 18. The offers still running end Oct. 31, so a buyer who starts touring model homes this weekend has about a week before November's terms replace them, whatever those turn out to be.
October's Offers, Side by Side
Seen together, the offers show a pattern. Each builder picked a different lever, and each lever comes with a deadline or a lender requirement.
| Builder | What was offered | Where | Conditions and timing |
|---|---|---|---|
| CBH Homes | 2/1 buydown at 4.25% / 5.25% / 6.25%, or up to $30,000 plus a 2% lender credit | Qualifying new CBH homes; no subdivisions named | Preferred lender; one option or the other; contracts Oct. 1–31 |
| Hubble Homes, Flex Funds | $20,000 to $40,000 by price tier for closing costs or a permanent rate buydown | Prairiefire at Heritage Grove and Prescott Ridge in Meridian; Riverton, Sabino's Rocky Ridge and Sera Sole in Kuna | Select quick-move-in homes; contracts by Oct. 31 |
| Hubble Homes, fixed rates | FHA and VA at 4.999%, conventional at 5.375% | Prescott Ridge, Riverton, Sabino's Rocky Ridge, Sera Sole | Contracts closed Oct. 18; close by Dec. 31, 2026 |
| Lennar | Up to $10,000 toward closing costs plus a 4.25% FHA 5/1 ARM, 5.25% FHA fixed, or 5.50% conventional fixed | Featured homes at Pera Place in Meridian and Bentley Meadows in Nampa | Purchase agreements Oct. 12–18 only |
| Boise Hunter Homes | 4.99% with a 5.375% APR on move-in-ready homes; 5.50% with a 5.763% APR on qualifying builds | Dry Creek Ranch, River Park Estates, Sky Mesa | 700 minimum credit score; preferred lender; no end date posted; subject to change |
Hubble's Flex Funds are tiered by price. They start at $20,000 for homes priced $300,000 to $399,999 and reach $40,000 for homes at $700,000 and above. Lennar's Super Deals had a seven-day window. Boise Hunter Homes notes that its rates can change or be withdrawn without notice. Every one of these offers changes the financing and leaves the price where it is.
The Gap the Subsidy Is Covering
That design makes more sense next to the price data. According to the Boise Regional REALTORS September 2026 Ada County stat sheet, the new-construction median was $622,704 and the resale median was $561,065. That puts new homes about 11% higher at the median. Over the past year the gap has grown. New-home prices rose 10.4% from September 2025, and resale prices rose 2.0%.
A builder who has raised prices by double digits in a year doesn't want to cut them. Every closed sale becomes a comparable for the next home in the same subdivision. A buydown or a closing-cost credit lowers what the buyer pays each month without lowering the recorded sale price. Resale sellers can't offer subsidies like these through a preferred lender, so price is their main lever.
The countywide figures also blur real differences between cities. In September, Boise's median fell to about $535,000, while Star's rose to roughly $627,500. Boise Regional REALTORS calls this "a reminder that the countywide median can mask very different local trends." The named offers cluster in Meridian and Kuna, so a buyer comparing a Kuna new build with a resale home in Boise is weighing a city difference as well as a new-versus-resale difference.
What Closings Show, and What Contracts Show
On September closings alone, resale is winning. Resale sales rose 18.2% year over year to 610, and new-home sales fell 10.0% to 244. Total closings reached 854, which Boise Regional REALTORS called the strongest September since 2021.
Contracts show the other half. New construction made up 1,051 of the county's 2,006 active listings, just over half of available supply. It also accounted for 654 of 1,140 pending sales, about 57%.
The two sets of numbers point in different directions partly because of timing. A resale home under contract usually closes within weeks. A new home can be sold before it's finished. Hubble's October offer on homes still under construction allowed closings as late as March 31, 2027. September's new-home closings reflect contracts written months earlier. The pending count, with new construction above half, reflects what buyers are signing now, while the subsidies are running.
New homes are also moving faster than a year ago. They averaged 48 days on market in September, 18.6% fewer than in September 2025. At 52% of supply and 57% of pending contracts, builders are holding their share of the market with financing rather than with price.
The Resale Side Is Slowing, Unevenly
Resale supply is shrinking, and it's also sitting longer. Resale inventory fell 16.2% year over year to 955 homes. Resale days on market rose 12.9% to 35, and the figure jumped 16.7% from August alone. The stat sheet also notes that fewer September listings were new to the market than in August. It says that suggests "the increase in supply is coming partly from homes remaining available longer rather than simply a rush of new listings."
How much a resale seller will move depends a lot on price point. In the Idaho Statesman's Oct. 4 report, Jared Cook, a Boise-based regional sales manager and mortgage officer at Zions Bank, described "a tale of two markets." He said he hadn't heard of many concessions to buyers at $500,000 and below, but had seen some softening from sellers in the million-dollar bracket. The same Statesman story reported that Cook is seeing more buyers ask how they can afford a home and more interest in adjustable-rate loans. It also reported that Idaho Realtors president Michelle Bailey has seen a handful of entry-level buyers move back "onto the fence" as rates rose.
Put together, the trade-off shifts with price. At entry-level prices, resale sellers have little reason to negotiate, so a builder's subsidy is one of the few ways a buyer can lower the payment. Toward the upper end, a resale seller whose home has been on the market a while may negotiate on price. A lower price stays lower for the life of the loan, while a 2/1 buydown is gone after year two.
Questions Buyers Are Asking This Fall
Can I combine a builder's rate buydown with its closing-cost credit? Under CBH's October terms, no. The cash credit replaces the 4.25% promotional rate. Lennar's October offer was built differently, with up to $10,000 toward closing costs plus one financing option. Each builder writes its own terms, and the terms change from month to month.
Will these October offers still be available? CBH's offer and Hubble's Flex Funds take contracts through Oct. 31, 2026. Hubble's fixed-rate offers and Lennar's Super Deals took their last contracts on Oct. 18. Boise Hunter Homes doesn't post an end date.
Does the countywide median describe the city I'm looking at? Often it doesn't. In September 2026, Boise's median was about $535,000 and Star's was roughly $627,500, both measured against a countywide $575,000.
This post is general market information, not financial or lending advice. Loan terms, buydown structures and eligibility depend on your own situation, so confirm them with a licensed lender before you sign anything.
If you're comparing a new build in Meridian or Kuna with a resale home elsewhere in the valley, we can put the two side by side. That means the purchase price, how the payment changes after the first two years, and how long comparable resale homes have been sitting. At Tina Richards Real Estate, we'll walk through that comparison with you before a builder's deadline does the deciding. Let's Connect.
