Building a barn costs $25 to $100 per square foot on HomeGuide — $30,000 to $120,000 for a 1,200-square-foot structure (January 2026)1. The marketplace platforms publish much lower averages drawn from their own job data: Angi reports a national average of $3,372 across 715 verified Angi Pro projects, with most homeowners paying $1,579 to $5,306 (October 2026)2, and Thumbtack’s page gives both a $5,371 national average ($114 to $19,590 range) and a separate headline of $260 to $2,557 with most people paying around $645 — figures as published; the two Thumbtack averages don’t match each other and the page doesn’t reconcile them (July 2026)3. Neither page establishes that its projects match the scope of a ground-up barn build, so the lower marketplace figures shouldn’t be treated as like-for-like new-barn estimates.
Cost by size
HomeGuide’s size table, selected rows1:
| Size | Square feet | Average cost |
|---|---|---|
| 20’x20′ | 400 | $10,000 – $40,000 |
| 20’x30′ | 600 | $15,000 – $60,000 |
| 30’x30′ | 900 | $22,500 – $90,000 |
| 30’x40′ | 1,200 | $30,000 – $120,000 |
| 30’x60′ | 1,800 | $45,000 – $180,000 |
| 40’x60′ | 2,400 | $60,000 – $240,000 |
| 40’x80′ | 3,200 | $80,000 – $320,000 |
| 50’x100′ | 5,000 | $125,000 – $500,000 |
| 60’x100′ | 6,000 | $150,000 – $600,000 |
Angi’s size table is framed around its $30 to $150 per-square-foot range: 800 square feet at $25,000 to $35,000, 1,500 at $40,000 to $75,000, and 3,000 at $80,000 to $120,0002. Thumbtack prices a traditional 1,200-square-foot hay barn with a slab foundation, wood framing, and interior buildout as starting around $45,0003.
Wood vs metal vs timber frame
HomeGuide splits the structure cost by material: prefab metal pole barn $15 to $40 per square foot, wood barn (dimensional lumber) $20 to $100, and timber frame $50 to $100, with the timber frame requiring a poured foundation1. Thumbtack, citing Buildings Guide, puts a metal barn at $7 to $25 per square foot against about $45 for wood, and its own standard wood-barn range at $45 to $65 per square foot without electricity or plumbing3. Angi’s type table covers full project totals: pole barn $25,000 to $65,000, metal barn $30,000 to $85,000, timber frame $50,000 to $120,000, prefab kit $20,000 to $50,0002.
Cost by barn style
HomeGuide’s style table1:
| Style | Cost per sq ft installed |
|---|---|
| Hoop barn | $7 – $15 |
| Pole barn | $15 – $40 |
| Gambrel barn | $25 – $60 |
| Bank barn | $30 – $50 |
| Monitor barn | $30 – $100 |
| Shed row barn | $40 – $60 |
| Post & beam barn | $60 – $160 |
| Round barn | $100 – $250 |
Thumbtack separately prices straight-wall barns at $7 to $25 per square foot and Quonset-style at $5 to $153 — both well below HomeGuide’s ranges for comparable shapes; ranges as published.
Cost by use
HomeGuide’s use table, selected rows1:
| Use | Average installed cost |
|---|---|
| Storage shed or shop | $20 – $100 per sq ft |
| Hay barn | $15 – $40 per sq ft |
| Cattle barn | $600 – $1,600 per cow |
| Hog barn | $50 – $300 per pig |
| Barn house (finished) | $50 – $160 per sq ft |
| Barn wedding venue | $50 – $170 per sq ft |
For horse barns, HomeGuide’s body text prices a 20×40-foot metal or pole barn at $24,000 to $56,000 and a timber-frame post-and-beam barn of the same size at $56,000 to $80,0001. (Its table labels a horse-barn row on a per-horse basis with figures its own body contradicts, so the per-horse row is omitted here.) Thumbtack adds that horse stalls cost $2,000 to $2,500 each to build3.
Labor, pros, and site work
HomeGuide’s split: pole barn materials $10 to $30 per square foot with labor at $5 to $10; post-and-beam materials $50 to $100 with labor at $10 to $601. Hourly rates differ by publisher — as published: HomeGuide lists a general contractor at $50 to $150 per hour, structural engineer $100 to $220, electrician $50 to $130, plumber $45 to $150, carpenter $40 to $1001; Thumbtack lists a general contractor at $30 to $85 per hour, carpenter $35 to $75, electrician $50 to $125 for wiring installation, plumber $50 to $1303; Angi prices a general contractor at 10% to 20% of total project cost, framing labor at $25 to $60 per hour, and foundation work at $4 to $12 per square foot, with labor overall at 30% to 60% of the total2.
Site work, as published: HomeGuide lists land clearing at $1,200 to $8,000, grading at $0.40 to $2.00 per square foot, a land survey at $200 to $1,200, and a concrete slab at $5 to $10 per square foot1; Angi prices overall site preparation at $2,000 to $10,000 with grading at $1,000 to $5,000 and a surveyor at $400 to $1,2002.
Permits and timeline
Permit rules are set locally — confirm with your building department before starting. Published estimates: $500 to $2,000 on HomeGuide, against $500 to $3,000 on Angi12. On timing, HomeGuide puts a simple pole barn at a few days and a larger enclosed barn at 6 to 12 weeks or longer with utilities1.
DIY vs hiring a pro
Angi estimates DIY barn construction cuts total expenses by 30% to 50% by removing labor, framing the comparison as $10,000 to $50,000 DIY against $25,000 to $120,000 with a pro — and notes permits and inspections apply either way2. Thumbtack notes pole barn kits start at a few thousand dollars and can exceed $20,000 depending on size and materials3. HomeGuide calls a pole barn built without a foundation the cheapest route1 — its claim, attributed.
Related cost guides
See pole barn cost for the dedicated post-frame breakdown, barndominium cost for a finished barn-style home, and workshop cost for a backyard shop.
Sources
- HomeGuide, How Much Does It Cost to Build a Barn? (2026), updated January 16, 2026
- Angi, How Much Does It Cost to Build a Barn?, updated October 2, 2026
- Thumbtack, 2026 Cost to Build a Barn, updated July 8, 2026