Cost by Size · 20 Footprints · Updated July 2026
Metal Building Cost by Size
Metal building prices scale with footprint, but not in a straight line. In July 2026 a 20×30 kit models at $11,000-$15,500 while an 80×100 runs $88,000-$128,000, and per-square-foot cost falls from about $18-$25 down to $11-$16 across that range. This hub prices 20 popular sizes at kit and turnkey scope, modeled from published supplier pricing, and links the deep-dive guide for every footprint.
Footprints priced
20 sizes
600 to 8,000 sqft, every popular step
Kit-only spread
$11K - $128K
Engineered steel package + drawings
Turnkey spread
$22K - $280K
Kit + slab + erection + delivery
Per-sqft slide
$25 → $11
Kit $/sqft falls as footprint grows
The master size table: all 20 footprints
Use this page in two passes. First, find your budget lane in the master table: kit price is the engineered steel package, turnkey adds slab, erection, and delivery at national mid-range rates. Second, open the guide for your shortlisted size; each one breaks down the slab, erection, doors, and options line by line, using the same disclosed methodology as the complete metal building cost guide. Ranges are national and modeled, collected June-July 2026; your county’s loads, labor, and freight move any number here by 20-30% in either direction.
TABLE 01Kit and turnkey ranges, 20×30 through 80×100
| Size | Sqft | Kit price modeled | Turnkey shell modeled |
|---|---|---|---|
| 20×30 | 600 | $11,000 – $15,500 | $22,000 – $33,000 |
| 24×30 | 720 | $12,500 – $17,500 | $25,000 – $37,000 |
| 24×40 | 960 | $13,500 – $19,000 | $28,000 – $41,000 |
| 30×30 | 900 | $14,000 – $20,000 | $29,000 – $43,000 |
| 30×40 | 1,200 | $17,000 – $25,000 | $36,000 – $54,000 |
| 30×50 | 1,500 | $20,000 – $29,000 | $43,000 – $64,000 |
| 30×60 | 1,800 | $23,000 – $33,500 | $50,000 – $74,000 |
| 30×80 | 2,400 | $29,000 – $42,000 | $63,000 – $94,000 |
| 30×100 | 3,000 | $34,000 – $50,000 | $76,000 – $113,000 |
| 40×40 | 1,600 | $21,000 – $30,000 | $45,000 – $67,000 |
| 40×50 | 2,000 | $25,000 – $37,000 | $55,000 – $82,000 |
| 40×60 | 2,400 | $28,000 – $44,000 | $65,000 – $110,000 |
| 40×80 | 3,200 | $36,000 – $55,000 | $82,000 – $128,000 |
| 40×100 | 4,000 | $44,000 – $66,000 | $98,000 – $152,000 |
| 50×50 | 2,500 | $29,000 – $43,000 | $64,000 – $96,000 |
| 50×60 | 3,000 | $34,000 – $51,000 | $75,000 – $112,000 |
| 50×80 | 4,000 | $44,000 – $65,000 | $97,000 – $149,000 |
| 50×100 | 5,000 | $54,000 – $82,000 | $120,000 – $185,000 |
| 60×100 | 6,000 | $63,000 – $96,000 | $140,000 – $215,000 |
| 80×100 | 8,000 | $88,000 – $128,000 | $185,000 – $280,000 |
Baseline spec: rigid frame, 26-ga PBR panels, 14-ft eave, standard openings, 4-inch reinforced slab. National mid-ranges, July 2026. 20×40, 24×24, and 60×80 are covered by established kit guides on the blog rather than this hub.
Why bigger buildings cost less per square foot
Two buildings, same construction, very different math: a 20×30 spreads its engineering, freight, and crew mobilization across 600 sqft; an 80×100 spreads nearly identical fixed costs across 8,000. Steel itself also gets cheaper per foot in bigger orders, and one large clear span uses less total wall panel than two small buildings holding the same floor area. The practical rule: if you’re debating two sizes and the budget allows it, the bigger building almost always wins on cost per usable foot. Length is the cheapest dimension to add at order time; width changes the frame engineering, and height changes loads, so add length first.
What moves any size's price up or down
Size sets the baseline; configuration moves it. These are the levers that change any footprint’s price, in rough order of impact.
TABLE 02Configuration levers, priced
| Configuration change | Typical impact | Notes |
|---|---|---|
| +2 ft of eave height | +6-9% on the kit | More steel and wind surface; also raises erection |
| +10 ft of length | Cheapest add there is | One more frame bay and panels; per-sqft falls |
| 24-gauge panels over 26 | +8-12% on panel cost | Dent resistance, longer paint warranties |
| Each additional roll-up door | +$1,500 – $4,500 installed | Size and insulation dependent |
| Blanket insulation package | +$2.50 – $4.00 /sqft | Roof and walls, installed with the shell |
| Heavy snow / high wind loads | +8-15% on the kit | Set by your county, not by preference |
Modeled national ranges, July 2026. Every lever is priced per footprint inside the size guides below; the cost calculator stacks them for your build.
How we price this clusterSize ranges are modeled from published supplier price lists and advertised kit specials collected June-July 2026, normalized to one baseline spec: rigid frame, 26-gauge PBR panels, 14-foot eave, one framed opening per 1,200 sqft, engineered for 20-40 psf ground snow and 115-140 mph wind. Turnkey adds slab at $6-$12/sqft, erection at $4-$10/sqft, and regional freight at national mid-range rates. Where too few real data points exist for a size, we model from component costs and label it as modeled. We never publish invented sample sizes.
Reading size pricing like a supplier does
Suppliers don’t price square footage; they price frames, panels, and engineering hours. Once you see the three mechanics below, every size quote you receive becomes predictable.
Stock footprints quote sharper than custom ones
Every plant keeps a library of pre-engineered footprints: widths in 10-foot steps, lengths in 5-foot bays, eaves at 12, 14, and 16 feet. Order inside the library and your drawings are nearly free and your quote is competitive, because three other suppliers stock the same building. Ask for a 37×63 and you buy custom engineering, longer lead time, and a 10-20% premium that survives every discount conversation. If your use case can live with 40×60 instead, the market fights for your order instead of tolerating it.
Loads amplify with span, not just location
County loads move every size, but they punish width hardest. Adding 10 psf of snow to a 30-foot span thickens a few members; adding it to an 80-foot clear span reworks the whole frame, because load scales with the square of span on the same member depth. That’s why an 80×100 in a 50 psf snow county can price 15% above the same building two states south while a 20×30 barely moves. If you’re building wide in load country, get quotes engineered to your parcel before comparing anything.
One big building beats two small ones
Two 30x40s hold the same floor area as one 40×60, and cost 20-35% more to own: two slabs, two sets of engineering and permits, two erection mobilizations, two electrical services, and double the wall panel exposed to weather. The single larger building also resells better. Split into two structures only when zoning setbacks, phased cash flow, or separate uses (a shop you heat, storage you don’t) genuinely demand it.
Resale follows the middle of the market
The most liquid used footprints are the ones everyone quotes new: 30×40, 40×60, 50×100. Odd footprints appraise against nothing and sell to nobody’s search. If there’s any chance the property sells within the building’s life, staying on a standard footprint is a free option on a faster sale and a cleaner appraisal.
Phasing beats stretching
If the budget can’t reach the size you need, buy the width you’ll always need and phase the length: rigid frames extend by adding bays to an end wall designed for it. Ordering “expandable end wall” costs a few hundred dollars now and turns a future stretch into bolted bays instead of a second building. Tell the supplier at order time; it changes the end-wall engineering.
Pick your size guide
Every size below gets a dedicated turnkey guide: kit, slab, erection, doors, and options priced line by line for that footprint. Guides publish in waves; sizes without a live link yet are marked and will connect as they go live.
20x30
600 sqft
$22,000 – $33,000 turnkey
Read the guide →
24x30
720 sqft
$25,000 – $37,000 turnkey
Guide publishing soon
24x40
960 sqft
$28,000 – $41,000 turnkey
Guide publishing soon
30x30
900 sqft
$29,000 – $43,000 turnkey
Read the guide →
30x40
1,200 sqft
$36,000 – $54,000 turnkey
Guide publishing soon
30x50
1,500 sqft
$43,000 – $64,000 turnkey
Guide publishing soon
30x60
1,800 sqft
$50,000 – $74,000 turnkey
Guide publishing soon
30x80
2,400 sqft
$63,000 – $94,000 turnkey
Read the guide →
30x100
3,000 sqft
$76,000 – $113,000 turnkey
Guide publishing soon
40x40
1,600 sqft
$45,000 – $67,000 turnkey
Guide publishing soon
40x50
2,000 sqft
$55,000 – $82,000 turnkey
Read the guide →
40x60
2,400 sqft
$65,000 – $110,000 turnkey
Guide publishing soon
40x80
3,200 sqft
$82,000 – $128,000 turnkey
Read the guide →
40x100
4,000 sqft
$98,000 – $152,000 turnkey
Read the guide →
50x50
2,500 sqft
$64,000 – $96,000 turnkey
Guide publishing soon
50x60
3,000 sqft
$75,000 – $112,000 turnkey
Guide publishing soon
50x80
4,000 sqft
$97,000 – $149,000 turnkey
Guide publishing soon
50x100
5,000 sqft
$120,000 – $185,000 turnkey
Guide publishing soon
60x100
6,000 sqft
$140,000 – $215,000 turnkey
Guide publishing soon
80x100
8,000 sqft
$185,000 – $280,000 turnkey
Guide publishing soon
Comparing bare kit quotes? Start here
The guides in this hub price the whole building: kit plus concrete, labor, delivery, and options. If you’re comparing bare kit quotes, these established kit-focused guides cover advertised package pricing for the most-quoted footprints, and each pairs with its turnkey guide here.
How to spend less without regret
Size-stage savings are the largest in the whole project because they multiply through every later line. The rules:
- Stay on standard footprints; the market competes hardest there
- Add length, not width, when you need more space at order time
- Order the expandable end wall if growth is even plausible
- One bigger building beats two smaller ones on every line that isn't zoning
- Round eave height up once; never plan to raise a roof
- Let per-square-foot economics argue for the size up when budget allows
- Check the used market for standard sizes before committing to the smallest option
Sizing rules of thumb before you commit
Before you lock a footprint, sanity-check it against what actually has to fit inside. Two cars need a genuine 20×20 minimum and breathe at 24×24. A workshop with a vehicle lift needs 14-foot eaves before length even matters, and RV storage is an eave-height question first, a length question second. Walk your equipment list through the space visualizer tool and the metal building sizes reference, and if the layout inside the box is the open question, the project planning hub covers door placement, eave heights, and floor plans. Building for a specific use? The cost-by-use hub prices garages, shops, barns, and warehouses as complete projects.
One last sizing note for planners: leave room on the site, not just in the building. Aprons, turning radii, future lean-tos, and setback margins all consume parcel space that the building footprint alone doesn’t show. A 40×60 building on a site that can’t grow is a decision; the same building placed to allow a future bay or lean-to is an option. Options are what good planning buys.
One last sizing note for planners: leave room on the site, not just in the building. Aprons, turning radii, future lean-tos, and setback margins all consume parcel space that the building footprint alone doesn’t show. A 40×60 building on a site that can’t grow is a decision; the same building placed to allow a future bay or lean-to is an option. Options are what good planning buys.
Size and price questions buyers actually ask
What is the most popular metal building size?
30×40 and 40×60 are the two sweet spots. A 30×40 (1,200 sqft) covers a serious garage or hobby shop at $36,000-$54,000 turnkey, and a 40×60 (2,400 sqft) is the standard working shop at $65,000-$110,000 turnkey (modeled, July 2026). Both are stock engineering for nearly every supplier, which keeps quotes competitive.
What size metal building is cheapest per square foot?
The biggest one you can use. Per-square-foot cost falls steadily with size: a 20×30 models around $18-$25/sqft kit-only while an 80×100 models near $11-$16/sqft, because engineering, freight, and crew mobilization spread across more feet. Small buildings are the most expensive square footage in steel.
Should I buy a bigger building now or expand later?
If there’s any realistic chance you’ll need the space, size up now. Extra length at order time costs one more frame bay and panels, the cheapest square footage you’ll ever buy. Expanding later means new engineering, a second slab pour, crew mobilization, and tying into an erected structure. The common regret in this industry is buying too small, not too big.
Do metal building prices scale linearly with size?
No. Doubling the floor area typically raises the total price by only 60-80%, because fixed costs don’t double. That’s visible in the master table: 1,200 sqft at 30×40 models at $36,000-$54,000 turnkey while 2,400 sqft at 40×60 models at $65,000-$110,000, not double the 30×40 range at the bottom end.
Which sizes need custom engineering and quotes?
Odd widths (anything not in 5-foot increments), clear spans past 80 feet, eave heights over 16 feet, and anything in a heavy snow or high wind county. Standard footprints like the 20 on this page are stock engineering for most suppliers; custom dimensions can add 10-20% and weeks of lead time. Get three written quotes either way.
How do snow and wind loads change the price of a size?
Expect 8-15% on the kit going from a 20 psf to a 50 psf snow county, and more on wide clear spans, because load requirements scale with span. Wind works the same way above 140 mph ratings. This is set by your county’s building department, not by preference; quotes without your parcel’s loads on them aren’t comparable.
What eave height should I order?
Your tallest use plus 2 feet. Standard 12-14 foot eaves cover vehicles and most shops; a vehicle lift needs 14; RVs and stacked racking justify 16. Each 2 feet adds roughly 6-9% to the kit and slightly more to erection. Height is the one dimension you cannot add later, so round up when in doubt.
Do bigger buildings need more expensive foundations per square foot?
Usually the opposite: slab cost per square foot drifts down with area because formwork and mobilization spread out. What raises foundation cost is load and frost, not footprint: heavy column reactions on wide spans need thicker footings, and northern frost depths add excavation everywhere. Budget $6-$12/sqft and let local quotes settle the exact number.
Ready to price your footprint for real?
Compare verified metal building companies for your size and project type, or stack your own configuration in the calculator first.
How these numbers are built: modeled national estimates from published supplier price lists, advertised kit specials, and reported buyer quotes, collected June-July 2026, at a baseline spec of 26-gauge PBR panels, 14-foot eave, and standard openings on a 4-inch reinforced slab. Full methodology in the SteelBuildingKit Cost Index. This hub links to our independent company directory; listings never change published numbers.
Written by the Steel Building Editorial Team | Last updated July 10, 2026 | Pricing data collected June-July 2026
Written by the Steel Building Editorial Team | Last updated July 10, 2026 | Pricing data collected June-July 2026