20x30 Pole Barn Cost 2026: $5,000-$26,000 Kit vs Built

A 20x30 pole barn costs $5,000 to $26,000 in 2026 depending on kit vs. contractor-built and how many features you add. The most common build — a contractor-built shell with a concrete slab and basic electrical — averages $15,000 to $20,000 nationally.

20x30 pole barn cost at a glance (2026):

Kit only (materials): $5,000 – $8,500

Kit + hired labor: $9,000 – $14,500

Contractor-built shell: $10,500 – $17,000

With concrete slab: $13,700 – $22,500

Slab + electrical: $15,500 – $24,500

Fully finished (insulated, wired, doors): $16,000 – $26,000

Per-square-foot: $8 – $43 (600 sqft)

National average (contractor + slab + basic electrical): $15,000 – $20,000

The 20x30 is one of the smallest practical pole barn sizes — 600 square feet of covered space at the lowest possible price point above a basic shed. It’s the most popular pick for a single-car garage with extra storage, a small workshop, ATV/lawn equipment storage, or as an accessory building on a residential lot.

20×30 Pole Barn Price Summary

Configuration	Price Range
Kit only (materials)	$5,000–$8,500
Kit + hired labor	$9,000–$14,500
Contractor-built (shell only)	$10,500–$17,000
With concrete slab	$13,700–$22,500
With slab + electrical	$15,500–$24,500
Fully finished (insulated, wired, doors)	$16,000–$26,000

The national average for a contractor-built 20x30 with a concrete slab and basic electrical is approximately $15,000 to $20,000.

Kit vs Contractor-Built Pricing

20×30 Pole Barn Kit: $5,000–$8,500

A typical 20x30 kit from Morton, Lester, Wick, or Menards includes:

Pre-cut treated posts (typically 6x6, qty 6–8)
Pre-engineered trusses (8 trusses at 4’ spacing)
Purlins, girts, 29-gauge steel roofing and siding
Ridge cap, trim, and all fasteners
One overhead door frame opening + one walk-in door
Hardware and detailed assembly instructions

What’s NOT included: concrete slab, the actual overhead door, electrical, insulation, site prep, or permits. Budget another $4,000–$8,500 for those finishing items.

Contractor-Built: $10,500–$17,000

A pole barn contractor charges $10,500–$17,000 for a 20x30 shell (no slab). In Indiana, Ohio, or Kentucky pole barn country, expect $10,500–$13,500. In the Northeast or West Coast, plan on $14,000–$17,000.

Concrete Slab Cost for a 20×30

Slab Type	Cost
4” standard slab (gravel base)	$3,200–$4,400
4” slab with wire mesh	$3,800–$5,000
6” reinforced slab	$4,500–$5,800

At 600 sq ft, you’re paying $5–$10/sqft including site prep and finishing.

What Affects 20×30 Pole Barn Pricing?

Height: Standard 10’ eaves. Going to 12’ adds $1,200–$2,400.
Overhead doors: 9x7 residential garage door $700–$1,400; 10x10 work-truck door $900–$2,000.
Steel gauge: 26-gauge upgrade adds $800–$1,500.
Insulation: $900–$1,800 vinyl-backed; $2,500–$4,500 spray foam.
Electrical: Basic $1,800–$3,000; workshop with subpanel $3,000–$4,500.
Location: Midwest cheapest; West Coast and Northeast 25–35% higher. Check our state cost guides for your area.

20×30 Pole Barn Cost by Use

Single-Car Garage with Storage

Total cost: $15,000–$22,000 Concrete slab, one 9x7 overhead door, walk-in door, basic electrical, partial insulation. Most popular configuration for residential lots.

Small Workshop

Total cost: $17,000–$25,000 Insulated for year-round use, workshop electrical with 220V circuits, dedicated workbench area. Common for woodworkers and hobbyists.

ATV / Equipment Storage

Total cost: $11,000–$17,000 Shell with one large overhead door, gravel floor, no insulation, minimal lighting. Most affordable configuration for storage of ATVs, mowers, snowblowers, or seasonal equipment.

Garden / Hobby Building

Total cost: $13,000–$20,000 Slab, walk-in door only (no overhead), windows for natural light, basic electrical. Common as a potting shed, art studio, or “she shed.”

Sample Cost Breakdown: 20×30 Single-Car Garage

Item	Cost
Post-frame shell (materials + labor)	$13,000
4” concrete slab with wire mesh	$4,200
One 9×7 overhead door	$1,100
One walk-in door	$400
Two 3×3 windows	$550
Electrical (100A panel, outlets, lights)	$2,500
Vinyl-backed insulation	$1,500
Site prep and gravel base	$1,000
Building permit	$250
Total	$24,500

You could trim $3,000–$5,000 by skipping insulation, doing a gravel floor, and adding fewer outlets. Or upgrade $2,000–$4,000 for spray foam and a workshop subpanel.

How to Get the Best Price on a 20×30

Get at least 3 quotes. Request free estimates from local builders — pricing on a 20x30 can swing $3,000+ between contractors.
Build in the off-season. October through February brings the lowest bids.
Do site prep yourself. Clearing and grading can save $700–$1,500.
Order a kit and DIY. A 20x30 is one of the friendliest sizes for a DIY build — short truss spans, manageable wall heights, achievable in 3–5 weekends.

Frequently Asked Questions

How much does a 20x30 pole barn kit cost? A 20x30 pole barn kit costs $5,000 to $8,500 from major suppliers like Morton, Lester, or Menards. This includes posts, trusses, steel roofing/siding, trim, and fasteners — but not the slab, overhead door, electrical, or insulation.

Can I build a 20x30 pole barn myself? Yes — the 20x30 is one of the easiest pole barn sizes for a DIY build. Two people can erect a 20x30 kit in 3–5 weekends with basic framing tools, a post hole digger, and a way to lift the trusses (an 8-foot ladder works for the 10-foot eaves). The concrete slab still typically requires hiring a contractor.

Is a 20x30 big enough for a 2-car garage? The 20-foot width is too narrow for two full-size vehicles parked side-by-side comfortably. It works as a single-car garage with storage, or as a 2-car garage for compact cars only. For a true 2-car garage with full-size vehicles, you need 24 feet of width minimum.

What can fit in a 20x30 pole barn? A 20x30 (600 sq ft) fits one full-size vehicle with workshop space, or a riding mower plus ATV plus garden equipment, or a single-bay workshop with workbench and tool storage. It’s the smallest pole barn size that still functions as a “real” garage rather than a glorified shed.

How much does it cost to build a 20x30 pole barn with a concrete slab? A 20x30 pole barn with a concrete slab costs $13,700 to $22,500 contractor-built. The shell runs $10,500–$17,000 and the 600 sq ft slab adds $3,200–$5,500.

How long does a 20x30 pole barn take to build? A professional crew can erect the shell in 2–4 days. Add 1 day for the concrete slab (plus 3–7 days cure time) and 1–2 days for electrical. Total project timeline: 1–3 weeks with a contractor. DIY builds typically take 3–6 weeks.

Get Your Free 20×30 Pole Barn Estimate

Ready to price out your 20x30 pole barn? Get free quotes from local builders who know your area’s soil conditions, codes, and pricing. Compare at least three estimates before committing.

For other sizes, see our complete pole barn cost guide or browse state-specific pricing.