Attached Metal Garages

You’ve spent an evening searching attached metal garage prices and come up with nothing but vague starting-at numbers. Delivery, installation, and add-ons are never in that first figure, so you’re left guessing at the real total, and calling around just gets you more of the same runaround.

That vagueness leads somewhere bad. You either overpay because you didn’t know what was included, or pick the cheapest option and end up with hidden fees, subpar materials, or an installation crew that just drops supplies in your driveway and calls it done.

We sell attached metal garages with the real installed price upfront — delivery and professional installation included, no surprise line items, no runaround. Call us at (866) 941-4072 or schedule a free consultation to get a straight number on your project.

An attached metal garage runs between $5,500 and $35,000+ installed, depending on size and customizations — and our prices include nationwide delivery and professional installation.

Standard Attached Metal Garage Pricing (Installed)

These prices cover delivery anywhere in the continental United States and full professional installation. Most competitors advertise lower ‘starting’ prices, then tack on $1,500-$3,000 for delivery and another $2,000-$5,000 for installation. That’s not transparency — it’s a trap.

Every attached metal garage we install comes with:

• Nationwide delivery to any location in the continental US
• Professional installation by experienced crews
• All framing and structural components
• Proper attachment to your home with weatherproof flashing
• One standard walk-in door (36′ steel door)
• One garage door opening (framed, ready for your door)
• Complete cleanup of installation materials
• Manufacturer’s warranty (20-year rust-through, 1-year workmanship)

Not included: Concrete foundation (typically $4-$8 per square foot additional), building permits, site preparation beyond basic leveling, utility connections, interior finishing, and the actual garage door itself.

Your final price hinges on several factors beyond basic size:

Steel gauge: Moving from 14-gauge to 12-gauge steel adds $800-$1,500 depending on size, but you get noticeably better durability and wind resistance. Worth it if you’re in a coastal or high-wind area.

Roof style: Lean-to roofs cost the least. Gable roofs add $500-$1,200, while gambrel roofs add $800-$1,800.

Additional openings: Extra garage door openings run $300-$800. Additional walk-in doors are $200-$500. Windows? $150-$300 each.

Insulation: Full insulation adds $1.50-$2.50 per square foot but makes a massive difference in climate control — especially if you’re planning workshop use.

Premium colors: Custom colors add $200-$400 to your total.

Wainscoting and trim: Decorative touches that match your home’s look add $400-$800.

The right attached metal garage size depends on how many vehicles you’re storing and whether you want extra room for storage or workshop use — standard sizes range from 12×21 for a single car up to 30×40 for three cars, with custom dimensions available.

Single car (12×21 or 12×24): Gives you 252-288 square feet for one standard vehicle with minimal storage. Good for protecting a daily driver when yard space is tight.

1.5 car (18×21 or 18×24): You get 378-432 square feet — room for one vehicle plus real storage space for lawn equipment, tools, or a small workbench. This is our most popular size, and honestly, it’s the sweet spot for homeowners who want more than just a parking spot.

2-car standard (20×20 or 24×24): Provides 400-576 square feet for two vehicles side by side. Go with the 24×24 if you want comfortable clearance between cars and along walls for storage.

2-car extended (24×30 to 24×36): Now we’re talking — 720-864 square feet for two vehicles with real workshop or storage area. Perfect if you need project workspace or room for ATVs and lawn equipment.

3-car (30×40 or larger): Opens up 1,200+ square feet for three vehicles or two vehicles with serious workshop space. Popular with hobbyists, contractors, and families with multiple drivers.

RV and boat storage (14×40 to 16×50): Dimensions depend on your vehicle length. A 14×40 fits most Class C motorhomes and travel trailers up to 35 feet. We always recommend adding 5 feet to your vehicle length for comfortable maneuvering.

Most homeowners underestimate their space needs by 20-30% when planning a garage. Happens all the time. Think beyond your current vehicles — will you buy something larger down the road? Got teenage drivers who’ll need parking soon? Planning to pick up a space-hungry hobby?

For vehicle storage, add 4-6 feet to each dimension beyond the minimum. Want workshop space? Plan for at least 8-12 feet of depth past your vehicle parking area so you’ve got room for workbenches, tool storage, and enough elbow room to actually work.

With attached garages specifically, proportions matter. How does the building look next to your home? We walk you through those aesthetic considerations during planning so nothing looks like an afterthought.

Every attached metal garage we sell can be tailored to your exact specifications. And custom sizing is especially valuable for attached garages — you’re working around existing home dimensions, property lines, setback requirements, and landscape features that don’t budge.

Yes — you can attach a metal garage to virtually any existing home with the right planning and installation techniques. Our crews regularly attach metal garages to wood frame, brick, vinyl siding, and stucco homes while maintaining weathertight seals and structural integrity.

Before we touch anything, we evaluate your home’s structure at the proposed attachment point. That means examining wall framing, siding condition, roof overhang, and how the garage roof will tie into your home. Most homes built to code in the past 50 years have adequate structure for garage attachment.

The attachment point needs to handle lateral loads from the garage and accommodate expansion and contraction with temperature swings. We use proper flashing techniques to create a weathertight seal that prevents water infiltration — and frankly, this is the single most important aspect of any attached garage installation. Get this wrong and you’ve got problems for years.

For brick or stone exteriors, we attach to the underlying wall structure. With vinyl or aluminum siding, we remove sections at the attachment point to access wall sheathing and framing, then reinstall siding so your home’s appearance stays intact.

Our installation turns your garage into a permanent, weathertight addition:

• Wall preparation: We identify wall studs and prep the surface, removing siding sections as needed
• Ledger installation: A treated lumber ledger board gets securely fastened to wall studs
• Flashing and waterproofing: Step flashing and waterproof membranes go in at every connection point
• Roof integration: Your garage roof ties into your home’s roofline for proper water drainage
• Finishing: Siding goes back on, all penetrations get sealed, and we inspect for potential leak points

When done right by experienced professionals, a properly attached garage with correct flashing carries no higher risk of water damage than your original home structure.

Most jurisdictions require building permits for attached structures. We provide detailed engineering drawings and specifications with every garage purchase — that gives you the documentation you need for permit applications.

Common code requirements include: minimum setbacks from property lines (typically 3-5 feet), fire-rated wall at the attachment point if sharing a wall with living space, foundation specs based on local frost depth, and minimum roof snow load capacity for northern states.

For most applications, 14-gauge steel delivers excellent durability and longevity. But 12-gauge steel is the better pick for high-wind areas, coastal regions, or northern states dealing with heavy snow loads.

14-Gauge Steel (Standard)

• Thickness: 0.0747 inches
• Wind rating: Certified to 140 mph winds
• Snow load: 35-40 PSF
• Best for: Moderate climates, standard residential use
• Lifespan: 25-30+ years with proper maintenance

12-Gauge Steel (Premium)

• Thickness: 0.1046 inches (40% thicker than 14-gauge)
• Wind rating: Certified to 170+ mph winds
• Snow load: 50-60+ PSF
• Best for: Coastal areas, high-wind regions, heavy snow areas
• Price: Adds $800-$1,500 depending on building size
• Lifespan: 30-40+ years with proper maintenance

Lower gauge numbers mean thicker, stronger steel. That 12-gauge upgrade gives you 40% more steel thickness, which translates directly to significantly better performance when weather gets extreme.

How long does installation take? Most attached metal garages go up in 1-3 days depending on size and complexity. We coordinate scheduling around what works for you.

Do I need a concrete foundation? Yes — a concrete slab foundation is required and typically costs $4-$8 per square foot. We can recommend local concrete contractors, or you can arrange this on your own.

Can you match my home’s color and style? We offer a wide range of colors and can add architectural details like wainscoting, trim, and gable roofs to complement your home’s look.

What maintenance is required? Very little. An occasional wash and inspection of seals and fasteners is about it. No painting, no wood treatment.

How does the warranty work? Our garages come with a 20-year rust-through warranty on steel panels and a 1-year workmanship warranty on installation.

Ready to get started? Call us today at (866) 941-4072 for a free quote on your attached metal garage — transparent pricing, no hidden fees.