Pausing your custom home build in 2026 could actually cost you more in the long run. With the 30-year fixed rate averaging around 6.2% to 6.5% in 2026 and one-time close construction loans locking your interest rate at the start of construction, building now is often a smarter financial move than waiting for rates or material prices to fall.
I'm Aaron Meilich, a construction lending specialist with two and a half decades in the mortgage industry, and I've guided thousands of borrowers through custom builds during rising and falling markets. The question I hear most right now is whether higher rates and materials should delay construction plans. The honest answer depends on your land, your lot, your budget — but for most people, the math favors moving forward sooner rather than later.
The Cost of Waiting vs. the Cost of Building
The biggest mistake I see in a rising-rate market is treating the decision as a simple rate comparison. You're not choosing between today's cost and tomorrow's cost — you're choosing between today's cost and a future where the house, the land, and the loan all cost more. Let me show you what that actually looks like.
Mortgage rates in 2026 have settled into a stable mid-6% range, with forecasts from Redfin (6.3%), the Mortgage Bankers Association (6.4%), and others pointing to only gradual declines over 2026 and 2027. Waiting for rates to fall back to the 3% territory of 2021 isn't a strategy — it's a hope. Meanwhile, home prices keep climbing, with the median home hitting $434,100 in June 2026 after 37 consecutive months of annual price gains.
That steady price growth erodes your buying power the longer you wait. Even modest appreciation of 1-2% a year on a $500,000 build is $5,000-$10,000 of added cost — before you've factored in the rent or housing you're paying while you wait. And research shows that for every percentage point between current rates and a locked-in lower rate, homeowners become less likely to sell — an effect that keeps inventory tight and prices supported.
The real cost of a two-year wait, on a $450,000 build
Cost driver | Build now (lock today's terms) | Wait two years |
|---|---|---|
Home appreciation | Buy at today's price; 2.5% annual appreciation builds equity in your favor | At ~2.5% cumulative appreciation over two years, the same home costs about $11,000 more to enter |
Rent paid while waiting | None — you move in when the build finishes | At the $2,100 median single-family rent, two years leaves roughly $50,400 in rent ($25,200/yr) you never get back |
Interest rate | A one-time close loan locks your rate at construction start | You stay exposed to whatever rates do; forecasters expect only gradual mid-6% declines through 2027 |
Total added cost of waiting | $0 from delay | Roughly $61,000+ from appreciation and rent, before any rate savings you may or may not capture |
Are Material Costs Still Rising?
Yes, but not the way headlines suggest. The cost story in 2026 is less about dramatic spikes and more about steady, grinding upward pressure — which is exactly the kind of cost that sneaks up on people who wait.
NAHB data shows residential building material prices up 3.5% year over year, the largest annual increase since early 2023. Metal products are driving much of it, with metal molding and trim prices surging nearly 50% from a year earlier. But it isn't uniform: softwood lumber prices remain below last year's levels, and ready-mix concrete has softened. What's pushing costs up isn't a lumber shock — it's labor. Construction faces a demographic squeeze as an aging workforce retires, so labor costs keep climbing in competitive markets.
Tariffs add another layer. U.S.-Canada softwood lumber tariff actions have mounted through 2025, and the National Association of Home Builders estimates they add about $9,200 in material costs per new single-family home. Because Canada supplies roughly a quarter of all softwood lumber in the U.S. market, these levies land squarely on new builds. Waiting doesn't make tariffs go away — in fact, policy uncertainty makes locking in costs now more attractive, not less.
Why a One-Time Close Construction Loan Is Your Best Hedge
A one-time close construction loan — also called a single-close or construction-to-permanent loan — converts your construction financing into your permanent mortgage with a single closing. That matters more in today's market than it ever has, because it locks your interest rate and your financing terms before the build even begins.
Here's the mechanism that makes it a hedge against rate volatility. With a standard two-close construction loan, you finance construction at one rate, then refinance into a permanent mortgage when the home is finished — paying a second set of closing costs and exposing yourself to whatever rates do during your build, which can stretch 9-18 months. A one-time close loan avoids that refinance, so a rate spike halfway through your project doesn't touch your final mortgage. You lock today's terms and keep them for the life of the loan.
That's especially valuable when expert forecasts point to only modest rate declines through 2026 and 2027. If rates fall later, many construction-to-permanent programs carry the option to refinance down the road. But you never want your financing terms decided by the economy on the random day your build wraps up.
Construction loans work best when you own your land free and clear or have substantial equity in it. Lenders typically want a down payment of around 20%. Talk to a construction lending specialist early — before you sign with a builder — so your financing structure matches your build timeline.
Frequently Asked Questions
Is it cheaper to build or buy a home in 2026?
Building a fully custom home typically runs $150 to $400+ per square foot in 2026. Opendoor puts the national average construction cost at $323,000, and custom builds run 20-30% more per square foot than production-built homes. Buying an existing home in most metros is cheaper per square foot, but building locks in a home tailored to you. The right choice depends on your budget and how much you value a truly custom floor plan.
Will construction loan rates drop in 2026?
Forecasts call for only gradual declines through 2026 and 2027, in the mid-6% range. Nothing signals a return to the 3% rates of 2021, so waiting for a big drop usually isn't realistic — and a one-time close loan shields you from whatever rates do during your build.
What's the difference between a two-close and one-time close construction loan?
A two-close loan finances construction, then requires a separate refinance into your permanent mortgage when the build finishes — two closings, two sets of costs, and exposure to rates at the end. A one-time close loan combines both into a single closing with your rate locked at the start.
Bottom Line
Higher rates and material costs don't mean you should shelve your custom home plans — in most cases, they're a reason to move forward while locking today's financing. Waiting leaves you paying more for land, labor, and materials while earning nothing on your build.
If your land is bought and your budget is solid, talk to a construction lending specialist about a one-time close construction loan before you commit to a builder. Locking your financing at the start is the surest protection against everything today's economy could throw at your project between breaking ground and moving in.
Views expressed are those of the author and do not represent Waterstone Mortgage Corporation as a whole.
Aaron Meilich, NMLS #769327, Sales Manager - Construction & Specialty Portfolio Lending, Waterstone Mortgage Corporation. Waterstone Mortgage Corporation NMLS #186434. Equal Housing Lender. Subject to credit approval & program guidelines. Information provided is not legal advice or credit counseling. Waterstone Mortgage is not a licensed real estate broker, and advertisements are for residential real estate financing only, not the sale of real estate. Opinions expressed are my own and do not necessarily reflect those of Waterstone Mortgage.
Great breakdown, Aaron. Your point about comparing "today’s cost vs. tomorrow’s higher cost" rather than just looking at rate drops really hits the mark—especially with labor and tariff pressures continuing to creep up. The peace of mind from locking in with a one-time close loan is huge in this environment. Quick question for you: For buyers looking at a one-time close loan, how do lenders typically handle float-down options if rates do happen to trend lower before the build wraps up?