New Construction Rate Locks Cost Hamilton County Buyers More Than They Expect

Signing a contract on a new build in Fishers or Westfield feels like the finish line. The reality is that it is actually the starting line. One of the most consequential financial decisions in that transaction happens in the weeks right after you sign. That decision is your rate lock strategy.

Most buyers do not realize they have real options, and many builders do not volunteer that information up front. In 2022, that silence cost some Hamilton County buyers tens of thousands of dollars.

What Builders Don’t Tell You About Rate Lock Strategy

New construction timelines in Hamilton County regularly run 12 to 14 months from contract to occupancy. Standard rate locks last 30 to 60 days. The math does not work, and that gap is where buyers get into trouble.

Builders often have preferred lenders with more flexible lock structures built to accommodate construction delays. That flexibility is real and sometimes valuable.

What builders rarely explain is the cost structure behind it. You need to know what you pay to extend a lock and what happens when a supply chain issue pushes your close date out. You also need to know your options if rates move significantly in either direction.

The 2022 market was a brutal teacher. Supply costs rose sharply while rates climbed. Some buyers who had put $20,000 to $50,000 down on new builds found themselves unable to close on their homes. Not because of credit issues, but because the numbers had shifted too far during construction. The buyers who had locked in early were protected. The ones who had not were fully exposed.

Rate Lock Options for New Construction Buyers

There is more flexibility here than most buyers realize going in. Three main structures are available, each suited to a different situation.

A full one-year lock with float-down protection lets you lock the rate at the contract while capturing any improvement if rates drop before closing. If rates rise instead, you are protected. That costs more upfront, but it removes nearly all rate uncertainty from a long build.

Staged locking lets the rate float during early construction and locks at a defined point. That point is often six months out or three months before the projected close. This works well when rates trend favorably. It carries real risk when they do not.

The third option is to lock at signing and manage extensions, which is the most common approach and requires active management. Extension fees are not always disclosed clearly at the start. You need to know the extension fee structure before you commit to a lender, not after the lock has already expired.

The right approach depends on where rates are, how stable the build timeline looks, and your personal tolerance for uncertainty. None of these structures should come as a surprise at month five.

Reviewing your financing options before committing to a builder’s preferred lender helps. Comparing loan program options early puts you in a much stronger position.

Monthly Check-Ins Are the Strategy, Not a Formality

Here is where buyers most commonly fall short on new construction. They sign, they lock or float, and then they go quiet. They trust the builder’s timeline and assume their lender is watching the clock. Leaving that assumption unexamined for months is where real problems begin.

The month-by-month check-in is not administrative overhead. It is where your rate-lock strategy is actually executed. A good lender tracks your build timeline and watches rate movement. At each milestone, they have a real conversation with you about whether to hold or lock.

Tevis Durbin has built this discipline into every new construction client relationship from the first conversation, not six months in.

“You can’t just not have that conversation and get five or six months into it and then spring that on someone. That’s a tough conversation to have.” – Tevis Durbin, Producing Branch Manager (NMLS #424899)

A lender who is not initiating those check-ins proactively should be asked to do so directly. Monthly contact during a 12- to 14-month build is a reasonable expectation.

Not sure how your current lock position stacks up against your build timeline? You can reach out to The Durbin Team before you hit a decision point under pressure. A conversation now is worth far more than a rushed one at month ten.

The Cost of Delays and How to Prepare

Delays are a common part of new construction. Most delays are not dramatic. The real issue is how those delays impact your rate lock and costs.

Supply costs have normalized significantly since 2022. Rates have moved in a relatively narrow band through mid-2026. They trended down from the sevens earlier in the year to the mid-sixes, with some periods touching the high fives.

That relative stability is good news for buyers in active Hamilton County builds right now. The lock decision carries less urgency than it did three years ago. That ease can create complacency, and complacency on a 14-month build is still a risk.

Delays stem from a trade bottleneck, an inspection issue, or a specialty material on backorder, and they incur extension costs. Those costs vary by lender and lock structure.

Some lenders charge a flat fee. Others might set the fee at a fraction of the loan amount per month. Some are buried at a slightly higher rate rather than as a visible line item on your closing disclosure. Knowing the extension structure before month eleven is what separates a manageable build from a stressful one.

Fannie Mae’s single-family selling guidelines require lenders to document rate lock terms in writing before closing. That requirement exists for a reason. Make sure you have yours in hand before construction begins.

“We try to be transparent with the fees and tell them what they’re looking at. In 2022, there were horror stories where people didn’t lock in their rate on new construction. Supply costs were going up astronomically. People had put $10, $20, $30,000 down, and they get halfway through, and they can’t afford the house. You’re not seeing that so much now because supply costs have normalized, but it’s still important to have that conversation up front.” – Tevis Durbin, Producing Branch Manager (NMLS #424899)

What Questions To Ask Any New Construction Lender

The builder’s preferred lender may have the most flexible rate lock structure. That does not automatically make them the right choice.

Before you commit to any lender on a new build in Fishers or Westfield, get clear answers to five questions:

1. What rate lock options do you offer for 12- to 14-month builds?
2. What does it cost to extend, and how is that cost structured?
3. Does my lock include a float-down provision?
4. How will we communicate throughout the build about rate movement?
5. What happens if the builder runs past the projected close date?

Clear answers to these questions are a baseline expectation, not a special request. Buyers who have already stumbled on new construction financing tend to share common patterns.

For more information, read our recent post about a common new construction financing mistake. It is worth the time of anyone planning to build a new home.

FAQs About New Construction Rate Locks

How long can I lock a rate on a new construction loan in Indiana?

Lock periods vary by lender and product. Some programs offer locks as short as 30 days, while others provide up to 12 months for longer builds. Extended locks typically carry a cost, either an upfront fee or a slightly adjusted rate. Understanding the full structure before you commit matters on any build projected to run 10 to 14 months.

What is a float-down provision, and is it worth the cost on a new build?

A float-down provision allows you to capture a lower rate if rates drop after you lock, while keeping your ceiling protection if they rise. For a long build in an uncertain rate environment, this is worth asking about. It might add some upfront cost, but it can easily offset that if rates move in your favor before closing.

What are rate lock extension fees, and how much do they typically run?

A build that runs past the expiration of your rate lock typically requires a fee to extend it. Some lenders charge a flat fee, and others charge a percentage of the loan amount per month. Some incorporate the cost into a slightly higher rate instead. A common range is 0.125% to 0.25% of the loan amount per 30-day extension, though structures vary. Understanding this cost before month one protects you from an unexpected expense near closing.

What if my builder’s timeline slips by several months?

A significant delay triggers the extension question. Depending on your lock structure, you may extend at a defined cost or renegotiate the lock. Some programs let you re-lock at the current market rate if it is more favorable. The key is to have this conversation with your lender at the first sign of a material delay, not after your lock has already expired.

Can I use a lender other than the builder’s preferred lender for a new-construction purchase in Fishers or Westfield?

Yes. Builders cannot legally require you to use their preferred lender as a condition of purchase. However, they can offer closing cost incentives tied to that lender. The real question is whether their pricing, lock flexibility, and communication align with what you need for a 12- to 14-month transaction. Comparing the builder’s lender against an independent lender before you sign gives you the clearest picture.

Does the builder’s projected close date affect my rate lock strategy?

It matters more than most buyers realize. The builder’s estimated completion date drives your lock timing, your extension exposure, and your cash-to-close planning. Treat that date as an approximation and plan for the build to run longer than projected. Builders estimate honestly but cannot fully control every variable during a 12- to 14-month build.

How does a new construction rate lock differ from a standard purchase rate lock?

For a standard resale purchase, a 30- or 45-day lock typically covers the entire transaction. On new construction, the gap between contract and close can stretch to a year or more, which means standard lock structures simply do not fit. New construction locks require extended lock programs, staged lock strategies, or a clear extension plan from day one.

Build Your Rate Strategy Before the Foundation Is Poured

New construction in Hamilton County is one of the most rewarding paths to homeownership. It is also one of the most complex financing situations to get right.

To close smoothly, buyers should ask about rate locks at the beginning. Stay connected with your lender throughout every build phase and ensure you understand your financial commitments.

Signed on a new build in Fishers or Westfield, or about to sign? The time to map out a rate lock strategy is now. Start the conversation with The Durbin Team for clear guidance on your timeline and rate lock strategy.

Tevis Durbin is the producing branch manager of Supreme Lending. He holds a Certified Mortgage Advisor (CMA) designation and an MBA in Finance, and serves on the State Board for the Mortgage Bankers of Indiana with a 97.75% five-star client rating across his 26-year career.