Straight answers · Greater New Orleans

What it costs to build a duplex.

Everybody dances around this question. Here is how the number is actually built, what is in it, what is not, and where people get surprised.

Get your numbers for your lot

The short version

Our turn-key builder package for the signature 3/2 + 3/2 duplex — 2,496 square feet of living area, six bedrooms and four bathrooms under one roof — is $322,000 (price effective September 2026), and that price includes plans, permits, survey and the build.

The lot is not in that number. It is the single most common misunderstanding, so we say it first. Lot prices in this metro vary enormously by ZIP code and by what the lot needs. In Greater New Orleans a buildable lot commonly runs $40,000 to $70,000, and the example we use on this site is $50,000. But you do not necessarily need cash for it: with your down payment and pre-approval, the lot may be financed into your loan, subject to lender approval.

What the turn-key price includes

IncludedWhat that means
Architectural plansThe proven plan, adapted to your lot and your model
PermitsFiled and carried through the city or parish that governs your lot
SurveyBoundary and the site work the permit office requires
The buildGround-up construction to modern code and today's wind ratings
Louisiana New Home Warranty Act1 year on materials and workmanship, 2 on systems, 5 on major structural defects

What is not included, and what it depends on

  • The lot. Its price, and whether it needs demolition or a shared driveway.
  • Extra site work. Clearing trees, grinding stumps, or more fill when a lot sits well below the street. Pilings, three loads of fill and a floor raised above the required elevation are already in the price.
  • Utility connections. What the water, sewer and power runs cost depends on where the lot sits relative to the mains.
  • Upgraded selections. Finishes above the standard package.
  • Closing costs, insurance and taxes. Those are yours and your lender's, not a construction cost — and in Louisiana the insurance line deserves a real conversation before you commit.

Why a fixed package beats a custom quote

When a builder prices a one-off design, the number is a guess dressed up in a spreadsheet. Nobody has built that plan, so nobody knows what it costs until they are halfway into it. That is where change orders come from.

We price a building we have already built. The trades know it. The permit offices have seen it. The plan has survived contact with reality. That is what makes a written price meaningful instead of decorative. See the six models.

Cost is not the same as what you pay up front

The build price is the project. What comes out of your pocket at closing is a different number, and it depends entirely on the loan:

  • FHA — 3.5% down. The lowest entry into a two-unit building, if you live in one side.
  • VA — $0 down for eligible veterans, with no monthly mortgage insurance.
  • Conventional — typically 20–25% down for a non-owner-occupied investment property.
  • Cash — some of our clients write one check.

And on a duplex the monthly number is not the monthly number either, because one side pays rent. That math is here.

Where the value comes from

New construction in this market tends to appraise above total project cost when the lot is bought right — that is the built-in equity people talk about. We will run that estimate with you honestly, on your lot and your ZIP code, and we will tell you when the numbers do not work. Appraised value is determined by a licensed appraiser, not by us, and it is never a guarantee.

Get the real number for your lot

The page you are reading is a range and a framework. Your number needs your lot, your ZIP code, your flood determination and your loan. Bring what you have and we will build it with you. The consultation is free and commits you to nothing.

Run my numbers

(504) 407-3199 · [email protected]

Where we build

Investment Property Builders is a home builder — not a lender, a mortgage broker, or a financial advisor. Every figure on this page is an illustration, not a quote and not a promise. Prices depend on your lot, site conditions, plan and finish selections, permitting, and the cost of labor and materials at the time of contract, are subject to change without notice, and become binding only in a written agreement signed by both parties. Appraised values are determined by a licensed appraiser. Rental income is not guaranteed, and real estate can lose value.

Operated by DuCar Construction, LLC — Louisiana Residential License No. 883334, Commercial License No. 63084. 638 Papworth Ave., Suite C, Metairie, LA 70005. Equal Housing Opportunity.

See our Privacy Policy, Terms of Use, SMS Consent, and Accessibility Statement.

What the total actually adds up to

Numbers current as of September 2026. The build price is ours; the lot and closing ranges are what our clients have actually been paying.

LineAmount
Turn-key build, 3/2 per side, 2,496 sq ft$322,000
Same build, per square footabout $129
Uptown or Baja elevation, added$2,000 or $4,000
Camelback, two-car carport under the raised rear, added$7,000
Lot, in the areas we build$40,000 to $70,000
Closing costs and prepaid items, FHA$8,000 to $14,000
Typical project, build plus lot$362,000 to $392,000

What this does not cover, because it is decided lot by lot: clearing trees and grinding stumps, extra fill beyond the three loads when a lot sits well below the street, utility connections that are farther than they look, demolition, and anything you add beyond the standard finish schedule. Pilings, three loads of fill and a floor raised above the required elevation are already in the $322,000. We price the rest on the specific address, in writing, before you sign.

And what it costs to carry, every month

On a $372,000 project, FHA 3.5% down, 6% illustrative rate.

Principal and interest$2,190
FHA mortgage insurance$167
Property tax, Orleans Parish$415
Homeowner insurance, our own policies$350
Flood insurance, where a lender requires it$133 to $175
Full payment, before flood$3,122

Jefferson Parish runs a lower millage than Orleans, so the same building carries cheaper in Metairie, Kenner or the Westbank. Rate shown is for illustration and moves with the market.

Questions people actually ask

Straight answers. Numbers are current as of September 2026.

What does it cost to build a duplex in New Orleans right now?

Our turn-key price is $322,000 as of September 2026 for a 3 bed / 2 bath per side, 2,496-square-foot two-story duplex. Add the land. Lots in our build areas have been running $40,000 to $70,000, so most projects total $362,000 to $392,000.

Why did the price go up?

Materials and subcontractor labor. We publish the date on the price for that reason — anyone showing you a build number without a date is showing you an old number.

What is included in turn-key?

Plans, permits, survey, the full build, standard finishes, fixtures, appliances and the certificate of occupancy — plus the pilings, three loads of fill and a floor raised above the required elevation. Not included: the land, tree clearing and stump grinding, extra fill on a low lot, closing costs, and anything you add beyond the standard finish schedule.

Is building cheaper than buying an existing duplex?

Not always on sticker price. It usually wins on carrying cost — insurance on a new building with current wind ratings runs thousands a year less than on old stock here, and you are not budgeting for a roof, a service panel or a sewer line in year three.

How long does it take?

Construction itself runs about six months once we break ground. Before that come the permit stage, which depends on the city or parish, and your loan closing. You get the schedule in writing before you sign, and the milestones are on our how-it-works page.

Can you build on a lot I already own?

Yes. If you do not have one, finding and securing the lot is part of what we do.

Do all the models cost the same?

Three do. The Spain, The Lizardi and The Milan build at the $322,000 turn-key number. The Uptown runs $2,000 more for its larger front windows, The Baja $4,000 more for its balconies, and The Camelback $7,000 more for a two-car carport under its raised rear section. The living area behind every one of them is the same 2,496 square feet, 3 bed / 2 bath per side — about $129 a square foot at the base price — so you are paying the difference for the outside, not the living space.

Still have a question? Call (504) 407-3199 or book a free consult. Hablamos español.

What You Pay While It Is Being Built

Six months of construction interest, and a price that does not move.

Two questions come up on every consult and most builders answer neither one in writing. Here they are.

What the build costs you month to month. On a construction loan you pay interest only on the money that has actually been drawn, not on the whole loan. Early on very little is out, so the first payments are small; by the end the full amount is out and the payment is at its largest. On the $372,000 project at 7% — the $322,000 build plus a $50,000 lot financed into the same loan — over about six months that comes to roughly $7,000 to $7,500 in total interest. The lot is drawn at the start, so month one already runs around $300; by the last month, with everything out, it is about $2,170. Your lender sets the actual structure; some roll it into the loan and some bill it monthly. Ask which before you sign.

Whether the price moves. It does not. The plan is already drawn, the selections are already made, and the trades have built this building before. That is the entire reason we sell a short list of elevations instead of designing something new every time. There is no overrun to pass on to you, because there is nothing left to discover.

The one thing that does move the number is you. If you decide mid-build that you want something changed, that is a change order and you pay for it out of pocket — your bank approved a loan amount and it is not going to cover a decision made after closing. The price covers one paint color through the house. If you want a different color in every bedroom, that costs more, and honestly, it is not how we work. Pick it before we start and the number you signed is the number you pay.

Interest figures are an illustration at 7% on a six-month build, not a quote. Construction loan terms, draw schedules and how interest is handled are set by your lender.

The Ground Under It

What the $322,000 covers on the ground — and what it does not.

Every duplex we build sits on pilings, on fill, with the floor raised above the elevation the survey calls for. Water runs past the house instead of standing under it. The base price carries a normal lot. It does not carry every lot, and we tell you which one you have before you sign anything, not after.

Included in the base price

  • Pilings. The structure is driven and set on piles, not laid on dirt.
  • Three loads of fill under the house, to bring the pad up.
  • Raised above the required elevation. We build the floor higher than the survey calls for, not level with it.

Not included — quoted after we walk your lot

  • Clearing trees and grinding the stumps.
  • Extra fill when the lot sits well below street level. A low lot needs more than three loads, and that dirt goes in before we start building.
  • Anything the topography turns up once we are standing on it.

So the honest answer to what will my lot cost is: we have to go look at it. We walk the lot, read the topography, count the trees, and tell you the real number in writing. If your lot needs work before we can build, you hear that at the start — not in the middle of the job.

Have us walk your lot

Delivered & Appraised

Three we delivered. Here is what the appraiser said they were worth.

The $410,000 figure on this site is not a projection we picked. It sits inside the range of what our last three duplexes actually appraised for, by licensed appraisers, after they were finished.

ZIPDeliveredModelLiving areaAppraised at
70122Feb 2026The Spain2,496 sq ft$405,000
70122Jun 2026The Spain2,496 sq ft$406,000
70115Jul 2026The Spain2,496 sq ft$412,000

Against a $372,000 project today — $322,000 turn-key construction plus a $50,000 lot — that is $33,000 to $40,000 of equity the day the appraisal comes back. We publish the range, not the best one.

Appraised values are set by a licensed appraiser and depend on the lot, the ZIP code and market conditions at the time. Past appraisals do not guarantee a future one. Addresses are not published.

Your Warranty

Every home we build carries the Louisiana New Home Warranty Act.

This is not a marketing promise we made up. It is state law — La. R.S. 9:3141 — and it binds every builder in Louisiana on every new home. Ask any builder you are talking to whether they put it in writing. Here is exactly what it covers.

1 year

Materials and workmanship

The home is free from defects in materials or workmanship, and from anything that does not meet the building standards.

2 years

Systems

Plumbing, electrical, heating, cooling and ventilating systems are free from defects that fail the building standards. Appliances, fixtures and equipment carry their own manufacturer warranties.

5 years

Major structural defects

The home is free from major structural defects, whether from failing the building standards or from defects in materials or workmanship.

Each period runs from the warranty commencement date. The Act sets out its own notice requirements and exclusions — we walk you through the full text before you sign, and you get a copy with your closing documents.

Source: Louisiana Revised Statutes, Title 9, Section 3144. This is a summary, not legal advice. The statute governs.