How Much Does a 30x40 Metal Building Cost Installed?
Straight answers on metal buildings and barndominiums from a North Texas general contractor with 500+ projects since 2009 — priced under a fixed-price contract.
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A 30x40x10 metal building shell costs $95,000 to $115,000 installed in North Texas. That is the erected structure with foundation, frame, roof, exterior sheeting, and doors and windows — not a finished interior. Adding a full residential finish-out with plumbing, electrical, and HVAC runs another $120,000 to $250,000.
Shell versus finished — the distinction that matters
A 30x40 building is 1,200 square feet. What that costs depends entirely on how far you take it.
| Level | Cost | What You Get |
|---|---|---|
| Shell only | $95,000–$115,000 | Erected structure, roof, sheeting, doors and windows |
| Shell + insulation and electrical | Shell + $25,000–$50,000 | Usable conditioned or semi-conditioned shop |
| Full residential finish-out | Shell + $120,000–$250,000 | Move-in ready living space |
| Finished barndominium | $215,000–$365,000 | Complete home |
Online quotes advertising far lower numbers for a 30x40 are almost always quoting a bare kit delivered on a truck — no foundation, no erection, no site work, no permits, no doors. That is a materials package, not a building.
What is included in an installed price
An installed shell price should cover engineered drawings, permitting, site preparation and pad work, the engineered concrete foundation, the steel frame and its anchorage, roof and wall sheeting, trim and closures, and the specified doors and windows — erected and complete.
What sits outside that: land, extensive site work, a driveway or culvert, septic, water well or utility tap, and electrical service run from the road. On raw acreage those can be substantial, and they have to be priced against your actual property rather than estimated from a table.
What moves the shell price
Wall height is the largest single variable. Going from 10 feet to 14 or 16 feet adds steel throughout the frame, taller sheeting, and larger doors — and it is the one dimension that cannot be changed after the frame is ordered, so decide it against what actually has to fit inside.
The foundation. North Texas expansive clay means the slab is engineered for the soil, and a slab intended for residential use with plumbing rough-in is a different pour than a plain shop slab.
Openings. Overhead doors, especially tall or wide ones, are a real line item and they have to be engineered into the frame.
Insulation strategy, which has to be decided before the shell goes up because blanket systems install as the panels go on.
Is 30x40 the right size?
For a shop, 1,200 square feet is the practical starting point for real work with room to move around equipment. For a home, 1,200 square feet is a comfortable small house — or a compact home plus a shop bay if the footprint is split. If you want both a genuine shop and full living quarters, most people end up wanting more footprint than 30x40 provides.
See our full barndominium cost breakdown or request a fixed-price estimate for your site.
Frequently Asked Questions
Why are online 30x40 metal building prices so much lower?
Because they quote a kit delivered on a truck — steel components only. No foundation, no erection labor, no site work, no engineering, no permits, no doors installed. An installed, permitted, engineered building is a different product.
Does the $95,000 to $115,000 include the concrete slab?
Yes — an installed shell price covers the engineered foundation, site pad work, the erected frame, roof and wall sheeting, and specified doors and windows. It does not include land, driveway, septic, well, or utility service runs.
How much does it cost to finish out a 30x40 as living space?
$120,000 to $250,000 for plumbing, electrical, HVAC, insulation, interior framing, drywall, kitchen, bathrooms, flooring, and trim. The range tracks finish level and how much of the footprint is finished.
What wall height should I choose for a 30x40?
10 feet works for general storage and light shop use. 12 to 14 feet is better for RV or equipment storage, and 14 to 16 feet is what a two-post car lift needs. It cannot be changed after the frame is ordered.
How long does it take to build a 30x40 metal building?
The shell erects quickly once the slab has cured. Engineering, permitting, and site work come first, and any interior finish-out runs on a conventional residential schedule afterward.
Let’s price your project
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