Custom Pole Barn Builder
You can customize your pole barn to fit your style, needs and budget by using our 3D Design Tool below and selecting the style, size, colors, doors, windows and more.
SKU: KBP-304000-CL
30×40 Enclosed Pole Barn
$10,786.00
30×40 Enclosed Pole Barn – 1,200 sq ft closed in on all four sides. Steel siding over 8×8 pressure-treated posts with a Galvalume metal roof, certified for 150 MPH wind. Pick your height (10′ to 20′), add windows, insulation and doors, and buy it as a DIY kit or fully installed in Florida & Georgia.
- Lockable four-sided steel siding – ready to insulate and finish
- Stamped engineered plans included for permitting
Enclosed Post-Frame Pole Barn - FL & GA
The 30x40 pole barn: 1,200 sq ft of lockable, finished space
The 30x40 enclosed pole barn gives you 1,200 square feet closed in on all four sides with steel siding - lock it up as a workshop, garage, secure storage or a finished barn. Engineered and certified for 150 MPH wind, built on 8x8 pressure-treated posts with a Galvalume metal roof, and ready for windows, insulation and doors. Take it as a DIY kit or fully installed.
1,200Sq Ft Enclosed
150 MPHWind Rated & Certified
10-20 FtHeight Options
FL & GAPro Install Available
Building Specifications
Standard 30x40 enclosed pole barn build
Every Keen's 30x40 pole barn is engineered and certified before it ships. The specs below are the standard enclosed configuration. Customize any line with your specialist or in the 3D designer.
- Style
- Enclosed post-frame, Gable
- Width
- 30'
- Length
- 40'
- Height
- 10', 12', 14', 16', 18', 20'
- Post Size
- 8x8
- Square Footage
- 1200 sq ft
- Cubic Feet
- 12000 cu. ft.
- Snow Rating
- Up to 35 PSF engineered (optional 90 psf upgrade)
- Wind Rating
- Engineered up to 150 MPH
- Roof Panel Gauge
- 29-gauge (optional 26-gauge upgrade)
- Trusses
- Engineered steel / metal-web
- Eave Heights
- 10'-20'
- Roof Pitch
- 3/12
- Warranty
- 20-year Structural
- Roof Panels
- Galvalume metal
- Post Spacing
- 12' on center (10' upgrade)
- Plans
- Stamped & engineered for permitting
Roof & Trim Colors
15 colors to match your property
Every 30x40 includes your choice of roof and trim color at no extra cost. Galvalume is standard; the 14 painted colors carry a 40-year paint warranty. Swatches below are approximate - ask your specialist for physical color samples.
Galvalume
White
Light Stone
Ivory
Sahara Tan
Clay
Koko Brown
Burnished Slate
Ash Gray
Charcoal Gray
Black
Hawaiian Blue
Forest Green
Barn Red
Burgundy
Common Uses
What people build in a 30x40
Wide-open interiors and the lowest cost per square foot in the business mean a Keen's 30x40 works as hard as you do. These are the setups our specialists see most often.
Enclosed Garage & Shop
Lock up multiple vehicles and a full workspace. Add windows, walk doors and roll-up garage doors as needed.
Insulated Workshop
Wire it, insulate it and climate-control it for a true four-season shop, studio or small business space.
Horse Barn w/ Stalls & Tack
An enclosed barn for two to three stalls plus a secure, weather-tight tack and feed room.
Secure Equipment Storage
Four-sided steel keeps tractors, tools and inventory locked and protected from sun, rain and theft.
Climate-Sensitive Storage
Enclosed and insulatable for items that can't take heat or humidity - electronics, documents or finished goods.
Finished Barn / Barndo Shell
A weather-tight shell ready to finish as a barndominium, office or living-plus-work space.
Two Ways to Buy
DIY kit or professionally installed
Both options ship with the same engineered, certified plans and the same quality materials. The only difference is who puts it up.
DIY Pole Barn Kit
Pre-cut lumber and metal, all hardware, and step-by-step instructions, delivered to your site. Ships to 13 Southeast states (AL, AR, FL, GA, KY, LA, MS, NC, SC, TN, TX, VA, WV). Typically saves 15 to 25 percent versus installed.
Professionally Installed
Our own crews set the posts, raise the trusses, and finish the roof and trim anywhere in Florida and Georgia. Builds go up on a prepared, level site. Delivery is quoted by distance to your site.
Why Keen's
Buy direct from a 26-year pole barn builder
26 Years in BusinessFamily-owned and direct since 1999, with crews on the road five days a week.
75,000+ Buildings InstalledOne of the Southeast's most-installed brands, so your barn is built by people who do this daily.
4.96-Star Reviews1,100+ verified customer reviews, independently collected through Reviews.io.
Engineered & CertifiedEvery 30x40 is engineered to meet or exceed 150 MPH wind and local snow loads, with stamped plans for your permit.
Heavy-Duty 8x8 PostsBuilt on heavy-duty 8x8 pressure-treated posts for the load and uplift capacity wider spans need, paired with a Galvalume roof built for the Southeast.
$0 Down Financing & RTO$0-down financing and rent-to-own with no credit check, applied online or over the phone.
Get a firm price on your 30x40 pole barn
Our specialists build your quote in minutes. Height, post size, colors, sides, lean-tos, financing - all rolled into one out-the-door number.
Customer Reviews
What pole barn buyers say about Keen's
Real, verified reviews collected through Reviews.io from Keen's pole barn, garage, and shed customers across Florida and Georgia.
Pole barn customer reviews
Reviews collected by Reviews.io — our 1,100+ customer reviews across all Keen's Buildings products are verified and independent.
Frequently Asked
30x40 pole barn questions, answered
How much does a 30x40 enclosed pole barn cost?
Pricing on the 30x40 depends on your wall height (10 to 20 ft), steel siding on all four sides, and add-ons like windows, walk doors, roll-up doors and a 26-gauge upgrade, plus whether you choose a DIY kit or professional installation. Call 386-339-1676 for a firm, out-the-door quote in your county. Every installed barn qualifies for $0-down financing or rent-to-own with no credit check.
Why is the 30x40 built with 8x8 posts?
On 30x40 and larger pole barns we build with heavy-duty 8x8 pressure-treated posts as standard - the added load and uplift capacity is what these wider clear spans need. 6x6 posts are offered on our smaller buildings up to 24 ft wide.
What's included with a 30x40 enclosed pole barn from Keen's?
Every 30x40 ships as a complete enclosed post-frame building: 8x8 pressure-treated posts, engineered steel or metal-web trusses, a Galvalume metal roof at a 3/12 pitch, steel siding on all four sides, all framing and fasteners, and stamped, certified engineered plans for permitting. Installed orders in FL and GA are set up on your prepared site by our own crews; delivery is quoted by distance.
What can you fit in a 30x40 pole barn?
At 1,200 square feet, the 30x40 fits multiple vehicles, a workshop, two to three horse stalls, an RV or boat with a taller height, or farm equipment and hay. Tell us how you'll use it and we'll help you spec the right height, posts and door layout.
What heights does the 30x40 pole barn come in?
Choose from 10, 12, 14, 16, 18 or 20 foot eave heights. Lower heights suit garages and workshops; 14 ft and up gives clearance for RVs, boats and tall equipment. Select your height in the options above.
Should I buy the DIY kit or have it installed?
A DIY kit ships pre-cut with all hardware and instructions to 13 Southeast states and usually saves 15 to 25 percent. Professional installation is available in Florida and Georgia, where our crews set the whole building. Delivery is quoted by distance to your site.
Do I need a permit for a 30x40 pole barn?
Most counties require a permit for a structure over 200 square feet, and a 30x40 is 1,200 square feet. Keen's provides stamped engineered plans sealed by a licensed Florida Professional Engineer with every pole barn, which is what your building department needs. Your specialist can help coordinate the submission.
How is the building engineered for wind and weather?
Keen's pole barns are engineered and certified to meet or exceed 150 MPH wind loads with posts set on 12-foot centers as standard (10-foot centers available as an upgrade). The Galvalume roof carries a 40-year paint warranty and resists Southeast humidity and salt air.
Can I add windows, insulation and doors?
Yes. The 30x40 enclosed barn comes sided on all four sides, and you can add windows, insulation, walk doors and roll-up garage doors, plus wainscoting and color upgrades. Configure it in the 3D designer or call 386-339-1676.
Does Keen's deliver and install in my state?
Professional installation is available anywhere in Florida and Georgia, with delivery quoted by distance to your site. DIY kits ship to 13 Southeast states: Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas, Virginia and West Virginia. Call 386-339-1676 to confirm coverage.
Other Popular Sizes
Compare nearby pole barn sizes
Not sure 30x40 is right? These are the closest sizes in our catalog.
About this listing
Published and maintained by the Keen's Buildings product team. Keen's Buildings is a pole barn and metal building dealer headquartered at 620 W. Howard St., Live Oak, FL 32064, established in 1999. Configurations reflect our current Florida-base package and may vary by height, post size, options, and state. For a firm price in your county, call 386-339-1676 - Mon-Fri 8am-5pm | Sat 8am-1pm.