# Building in Acadiana: A Guide to One-Time Close Construction Loans

By Monique Smith (@moniquesmith) · Published 2026-10-20

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Building a new home in Acadiana can feel like a leap into the unknown — two separate loans, two closings, two sets of fees, and the risk that your interest rate drifts higher while the slab is still curing. A One-Time Close construction loan collapses all of that into a single closing: you qualify once, lock your rate once, and the construction loan converts into your permanent mortgage automatically when the build is finished ([GMFS Mortgage](https://gmfsmortgage.com/build-or-remodel/)). For Lafayette and Acadiana buyers who want to build rather than buy an existing home, it is one of the most predictable ways to get from a bare lot to a finished front porch. As a local loan officer in Lafayette, I walk first-time builders through this process every week, and the same questions come up again and again. This guide answers them.

## What is a One-Time Close construction loan?

A One-Time Close (OTC) construction loan is a single loan that finances the land, the construction, and the permanent mortgage in one closing. Instead of taking a short-term construction loan and then a separate permanent mortgage when the house is done, you close once and the loan converts to permanent financing automatically at the end of the build — no re-qualification, no second round of closing costs. FHA, VA, USDA, and conventional programs all offer one-time-close versions, so the structure adapts to a range of borrowers. The appeal is simplicity and certainty: one underwriting, one rate lock, and one set of fees.

## How do I finance building a new home in Louisiana?

In Louisiana you have three main routes: a traditional two-close construction loan, a One-Time Close loan, or — if you already own a home to build on or a strong renovation plan — a renovation loan. For most custom builds from a bare lot, the choice comes down to two-close versus one-time-close. The two-close route gives you flexibility to renegotiate the permanent rate after the build, which is attractive if rates fall. The one-time-close route gives you certainty — one lock, one set of closing costs, no second qualification. Many Acadiana buyers also build on land they already own or that a family member owns; that equity can be applied toward the loan-to-value and reduce your cash down payment, depending on the program ([GMFS Mortgage](https://gmfsmortgage.com/build-or-remodel/)).

![House construction with wooden framing and scaffolding](https://images.unsplash.com/photo-1785585508606-36e0b82f4887?fm=jpg&q=60&w=3000&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=NHwxMjA3fDA%3D)

## What is the difference between a traditional construction loan and a One-Time Close loan?

The fear behind the two-close question is simple: you lock a construction rate, pour months into a build, and then discover rates have climbed — or your financial picture shifted — so the permanent mortgage you need either costs far more than planned or falls through. A One-Time Close is the predictable answer. The two-close loan is a short-term, interest-only loan that covers construction only; when the build ends, you take out a separate permanent mortgage in a second closing, which means qualifying again, paying closing costs again, and taking whatever rate the market gives you that day. The One-Time Close loan wraps both phases into a single mortgage, so there is one closing, one qualification, and one locked rate from day one. The table below shows how they compare.

Feature

Traditional two-close loan

One-Time Close loan

Number of closings

Two separate closings — one for construction, one for the permanent mortgage

One closing covers land, construction, and the permanent loan

Interest rate

Construction rate first, then a new permanent rate negotiated at the second closing

One rate locked up front that carries through conversion

Qualifying

You are re-qualified at the second closing

You qualify once and convert without re-qualification

Closing costs

Two sets of title, appraisal, and lender fees

One set of fees

Flexibility

Can capture a lower permanent rate if market rates fall during the build

Less rate flexibility, but predictable and simpler

## Can I finance my construction loan and permanent mortgage together?

Yes — that is exactly what a One-Time Close loan does. The construction phase and the permanent mortgage are packaged as one loan, and when construction is complete the balance converts to the permanent mortgage. It also means your land, if you already own it, can be counted toward the deal: in eligible programs, land you own free and clear — or purchase at the same time — can be applied to the loan-to-value calculation, and land equity can reduce or eliminate the cash down payment required at closing. One important catch: every OTC program requires a licensed, approved builder — you cannot act as your own general contractor on most of these loans ([Builder approval](https://gmfsmortgage.com/builder-app/)).

## What should I know before buying land and building in Acadiana?

In Lafayette, **land is often the single biggest driver of a build's total price** — and it can be hard to find. As one Lafayette builder put it, "There's no property left," with lots selling at a premium in a city that is virtually landlocked by surrounding municipalities ([The Advocate](https://www.theadvocate.com/acadiana/news/business/luxury-home-sales-spiking/article_7421802b-6627-4345-9842-f5bfe9ddef3e.html)). That reality shapes every budget. Before you buy a lot, know what is actually buildable: soil conditions and elevation matter in Acadiana's flood-prone lowlands, so a wetland or drainage assessment can save you from a lot that needs costly fill or a raised foundation. Confirm utilities are available at the lot line, check whether you're in a special flood hazard zone (which drives insurance costs), and verify zoning and setback rules with Lafayette Parish or your city. A lot that needs water, sewer, and electric run to it can add tens of thousands to the project before the first shovel of dirt moves.

## How much money do I need to build a house?

Your cash needs depend on the program, your credit, and how much land you bring to the table. Conventional construction loans generally want a higher score and a larger down payment, but not GMFS Mortgage. We finance 95% of appraised value! But the down payment is only part of the picture. You'll also pay closing costs, and you should set aside a contingency fund for change orders and site surprises — budget contractors sometimes leave these out, which can leave an unexpected bill. If you already own the land, that equity can count toward your loan-to-value and shrink the cash you need at closing. As a rule of thumb for custom builds in the area, plan for the lot, the construction price, closing costs, and a reserve of several percent of the build cost for overruns.

## Should I buy an existing home or build one?

The decision comes down to price, timeline, and control. Buying an existing home is faster and the price is fixed up front — you see exactly what you get and move in within weeks. Building gives you a home designed for your life and a brand-new structure with a builder warranty, but it takes months and carries more cost risk because the final price depends on land, materials, and change orders. In Lafayette Parish, where the median sale price reached $254,000 last year while new construction in the area is often priced in the high $100s to $300s, the gap between buying and building is real ([The Advocate](https://www.theadvocate.com/acadiana/news/business/luxury-home-sales-spiking/article_7421802b-6627-4345-9842-f5bfe9ddef3e.html)). If you value total control over finishes and layout and can wait out the build, a One-Time Close loan makes that predictable. If you need to move soon or want a firm, all-in price now, an existing home is the lower-risk path.

## What should I ask my builder before starting the mortgage process?

Before you sign anything, get the answers that protect your budget and your loan. Ask what is and isn't included in the contract price — site work, utilities, permits, landscaping, and the foundation can each be billed separately. Confirm the builder is licensed, insured, and approved by your lender's program; FHA construction loans, for example, require licensed contractors with liability insurance and at least two years of experience building homes, plus a new-construction warranty. Ask about the draw schedule and how change orders are priced and get a realistic timeline in writing with a plan for delays. Finally, ask who handles permits in Lafayette Parish and whether the lot is buildable as-is. A builder who answers these clearly is one you can trust with a year of your life.

Monique Smith | NMLS# 1112638 | [msmith@gmfslending.com](mailto:msmith@gmfslending.com)

[https://gmfsmortgage.com/loan-officers/monique-smith/](https://gmfsmortgage.com/loan-officers/monique-smith/)