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, 40X55 Metal Building - Pro Shop Or Rv Garage With Work Bay, Kmb-405512-213
Keen's Buildings, 40x55 Metal Building - Pro Shop or RV Garage with Work Bay, KMB-405512-213
SKU: KMB-405512-213

40×55 Metal Building – Pro Shop or RV Garage with Work Bay

Original price was: $41,880.00.Current price is: $33,504.00. Installed

The 40x55x12 metal building delivers 2,200 sq ft of clear-span space -” enough length to store a Class A RV plus a rear work bay, or a spacious 4-5 car garage. Comes standard with (2) 10×10 roll-up doors, (1) 36-in. walk-in door, and (3) 30×36 windows. Free delivery and installation included.

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SKU: KMB-405512-213
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4.96 1,100+ reviews Jump to customer reviews across all Keen's Buildings products
Pro Shop / Rv Garage

Why the 40x55 is one of our most-ordered sizes

The 40x55x12 Keen's metal building gives you 2,200 square feet of clear-span interior (26,400 cu ft of volume) -” enough length to store a Class A RV plus a rear work bay, or a spacious 4-5 car garage. Factory-direct, free delivery, and free installation are included with every quoted price.

2,200Sq Ft Clear-Span
26,400Cubic Ft Volume
20 YrsStructural Warranty
FREEDelivery & Install
Building Specifications

Standard 40x55x12 Configuration

Every Keen's 40x55 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 40x55

2,200 square feet is enough to support a wide range of uses. Here are the four most common configurations our specialists see for the 40x55x12.

3-4 Car Garage

Comfortable for 3-4 full-size vehicles with room around each for doors to open and work to happen. Add a second roll-up and a walk-in door for easy in/out access.

Home Workshop or Mancave

Enough depth for a workbench, tool cabinets, and a dedicated hobby area. Popular for woodworkers, gunsmiths, metal fabricators, and classic-car enthusiasts.

RV or Toy-Hauler Garage

Most Class-A and fifth-wheel RVs fit in this size range -” raise the walls to 14 ft and upsize the roll-up door to 12x12 or 14x14 for full clearance.

Landscaping / Trade Shop

Covered truck parking, trailer storage, and a secure tool room for contractors, landscapers, and small trades who need a professional base of operations.

Financing

Payment options on a 40x55

The 40x55x12 base package starts in the mid $27s 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 $27,500Installed, base package
$367/mo$0 Down Financing
$764/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 40x55

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 40x55 say

Real, verified reviews collected through Reviews.io. See how our 40x55 customers -” garage owners, RV owners, contractors, and ag operators -” have reviewed their installation and the building itself.

Frequently Asked

40x55 metal building questions, answered

What's included with a standard 40x55 metal building from Keen's?
Every Keen's 40x55x12 enclosed building ships standard with (2) 10x10 roll-up doors, (1) 36-in. walk-in door, (3) 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 40x55 metal building cost?
A base 40x55x12 Keen's enclosed building starts in the mid $27s 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 40x55 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 40x55 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 40x55 metal building best used for?
A 40x55 gives you 2,200 square feet of clear-span space and 26,400 cubic feet of enclosed volume. It's enough length to store a Class A RV plus a rear work bay, or a spacious 4-5 car garage. 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 40x55 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 40x55 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 40x55 in our catalog.

40x50 Metal Building 40x60 Metal Building 30x55 Metal Building 40x45 Metal Building 40x65 Metal Building 50x55 Metal Building 40x40 Metal Building 40x70 Metal Building 40x35 Metal Building 60x55 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.