386-339-1676 Mon - Fri 8am - 5pm | Sat 8am - 1pm
★★★★★ 4.96 out of 5 Based on 1,100+ reviews
★★★★★ 4.96 out of 5 Based on 1,100+ reviews
Free Delivery Free Delivery
Free Installation Free Installation
20 Year Warranty 20 Year Warranty
Over 75,000 Buildings Installed Over 75,000 Buildings Installed
Since 1999 - 26 Years in Business Celebrating 26 Years in Business
Sheds 2-Story Sheds Carports Garages Workshops Commercial Metal Barns Pole Barns
Keen'S Buildings, 40X35 Metal Building - Wide Garage &Amp; Small Shop, Kmb-403512-213
Keen's Buildings, 40x35 Metal Building - Wide Garage & Small Shop, KMB-403512-213
SKU: KMB-403512-213

40×35 Metal Building – Wide Garage & Small Shop

Original price was: $28,830.00.Current price is: $23,164.00. Installed

The 40x35x12 metal building delivers 1,400 sq ft of clear-span space -” a wider format for those who want the short footprint of a garage but more interior work space. Comes standard with (2) 10×10 roll-up doors, (1) 36-in. walk-in door, and (2) 30×36 windows. Free delivery and installation included.

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SKU: KMB-403512-213
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4.96 1,100+ reviews Jump to customer reviews across all Keen's Buildings products
Wide Garage / Small Shop

Why the 40x35 is one of our most-ordered sizes

The 40x35x10 Keen's metal building gives you 1,400 square feet of clear-span interior (14,000 cu ft of volume) -” a wider format for those who want the short footprint of a garage but more interior work space. Factory-direct, free delivery, and free installation are included with every quoted price.

1,400Sq Ft Clear-Span
14,000Cubic Ft Volume
20 YrsStructural Warranty
FREEDelivery & Install
Building Specifications

Standard 40x35x10 Configuration

Every Keen's 40x35 enclosed metal building ships as a complete, installed package. Customize any line item through your specialist or our online designer -” the specs below are the out-of-the-box standard, pulled live from the product record.

Common Uses

What people build with a 40x35

1,400 square feet is enough to support a wide range of uses. Here are the four most common configurations our specialists see for the 40x35x10.

Residential 2-3 Car Garage

Park two full-size vehicles plus lawn equipment, bikes, and a workbench. Add a garage door opener and LED lighting package and this becomes your daily-driver garage.

Backyard Workshop

Ideal for woodworkers, hobbyists, and homeowners who need a dedicated shop separate from the house. Insulation and a walk-in door make it a comfortable year-round work space.

Household Storage

Keeps ATVs, kayaks, holiday decor, and seasonal gear locked up and out of the weather. 29-gauge walls and a 20-year Structural warranty protect what's inside.

Home Business / Hobby

Great for a side business, photography studio, or a detailing bay -” the clear-span interior takes whatever layout you need without columns in the way.

Financing

Payment options on a 40x35

The 40x35x10 base package starts in the mid $18s delivered and installed. Final price depends on height, gauge, colors, doors, insulation, and your state's engineering requirements -” your specialist will build a firm, out-the-door number in one call.

From $18,900Installed, base package
$252/mo$0 Down Financing
$525/moRent-to-Own · No Credit Check

Starting prices are estimates based on a base configuration in Florida. Your actual quote may be lower or higher depending on upgrades and state certification. Call 386-339-1676 for a same-day firm price.

Why Keen's

The difference of a factory-direct, 26-year installer

26 Years in Business Keen's Buildings has been a family-owned, factory-direct operation since 1999.
75,000+ Buildings Installed One of the Southeast's most-installed brands, with crews on the road five days a week.
4.96-Star Reviews 1,100+ verified customer reviews -” independently collected through Reviews.io.
Free Delivery & Installation Every price quoted is delivered and installed on your prepared, level site -” no setup surprises.
20-Year Warranty 20-year Structural warranty on your galvanized frame, plus manufacturer warranties on panels.
$0 Down Financing & RTO $0-down financing and rent-to-own with no credit check -” apply online or over the phone.

Get a firm, installed price on your 40x35

Our specialists build your quote in under 10 minutes. Financing, concrete, insulation, and upgrades all included in one number.

Customer Reviews

What buyers of the 40x35 say

Real, verified reviews collected through Reviews.io. See how our 40x35 customers -” garage owners, RV owners, contractors, and ag operators -” have reviewed their installation and the building itself.

Frequently Asked

40x35 metal building questions, answered

What's included with a standard 40x35 metal building from Keen's?
Every Keen's 40x35x10 enclosed building ships standard with (2) 10x10 roll-up doors, (1) 36-in. walk-in door, (2) 30x36 windows, a 14-gauge galvanized primary frame, 29-gauge roof and wall panels, and an A-frame vertical roof. Free delivery and free installation on your level site are included in the price, plus a 20-year Structural warranty on the frame.
How much does a 40x35 metal building cost?
A base 40x35x10 Keen's enclosed building starts in the mid $18s installed. Final price depends on height, gauge, door and window count, color, insulation, and your state's wind/snow certification. Call 386-339-1676 for a same-day custom quote or use our online designer -” we'll match your county's code and deliver a firm, installed price.
How long does delivery and installation take?
Lead time is typically 4-8 weeks from the day you reserve, depending on state, factory queue, and season. Installation on a prepared, level site usually takes 1-3 days for this footprint. Keen's has installed more than 75,000 buildings since 1999, and we schedule your crew, handle delivery, and anchor the building for you.
Do I need a concrete slab for a 40x35 metal building?
A concrete slab is recommended for most enclosed buildings this size, especially if you're parking vehicles, running a workshop, or bolting in equipment. Keen's can pour your slab as part of the project (rolled into your financing) -” plan on roughly $6-$10 per square foot for a 4-inch reinforced slab depending on your region. We can also install on a gravel pad or directly to ground with mobile-home anchors for equipment storage.
Do I need a permit for a 40x35 metal building?
Most counties require a permit for an enclosed building of this size. Keen's will provide engineered drawings, wind/snow certifications, and foundation specs sized to your county -” this is usually all a building department needs. Your Keen's specialist will walk you through the local process, and our state landing pages cover permitting nuances for your area.
What is a 40x35 metal building best used for?
A 40x35 gives you 1,400 square feet of clear-span space and 14,000 cubic feet of enclosed volume. It's a wider format for those who want the short footprint of a garage but more interior work space. With custom door, window, and height options you can adapt the same shell into a garage, workshop, barn, warehouse, or agricultural shelter.
Can I customize a 40x35 metal building?
Yes -” you can upsize doors up to 14x14, add garage door openers, add windows, raise the side walls from 10 ft to 16 ft, add lean-tos, upgrade gauge, and add insulation. Color-match your roof, walls, and trim from 15 standard brand colors. Use our online designer or call 386-339-1676 -” we'll walk you through the configuration.
What warranty comes with a Keen's Buildings metal building?
Every Keen's enclosed building includes a 20-year Structural warranty on the galvanized primary frame, plus a manufacturer's panel warranty on roof and wall sheeting. Our installation labor is warrantied at delivery, and your specialist stays with you for post-install service. Keen's has been in business since 1999 with a 4.96-star customer rating over 1,100+ reviews.
What financing is available for a 40x35 metal building?
Keen's offers $0-down financing and rent-to-own with no credit check on every size in this catalog. Apply online in minutes or call 386-339-1676 -” we'll structure your monthly payment around your budget and roll in concrete, insulation, and upgrades if needed.
Does Keen's deliver and install in my state?
Keen's delivers and installs across the Southeast and Mid-Atlantic -” including Tennessee, Alabama, South Carolina, North Carolina, Georgia, Florida, Virginia, West Virginia, Kentucky, Mississippi, Louisiana, Arkansas, Missouri, and several additional states. Visit our state landing pages or call 386-339-1676 to confirm coverage in your county.
Other Popular Sizes

Related metal building sizes

Comparing sizes? These are the closest alternatives to the 40x35 in our catalog.

40x30 Metal Building 40x40 Metal Building 30x35 Metal Building 40x45 Metal Building 50x35 Metal Building 40x50 Metal Building 40x55 Metal Building 60x35 Metal Building 40x60 Metal Building 40x65 Metal Building

About this listing

Published and maintained by the Keen's Buildings product team. Keen's Buildings is a factory-direct metal building dealer headquartered at 620 W. Howard St., Live Oak, FL 32064, established in 1999. Pricing, configurations, and certifications on this page reflect our current Florida-base package and may vary by state. For a firm price in your county, call 386-339-1676 -” Mon-Fri 8am-5pm | Sat 8am-1pm.