Accessory & Storage Buildings
Residential storage and garage solutions built with Sherman quality.
Accessory and storage buildings are post-frame pole structures built for the things that matter outside your house — vehicles, RVs, boats, lawn equipment, snowmobiles, tools, and seasonal gear. Sherman Buildings engineers every garage and storage building to the specific snow and wind loads for your Minnesota or Northwest Wisconsin site, with wide overhead doors, ground-contact pressure-treated columns, and finishes designed to match your home.
Built to Match Your Home and Your Stuff
From single-car detached garages to large multi-bay storage buildings, Sherman Buildings has designed and built residential accessory structures across Minnesota for 50 years. Post-frame construction delivers superior strength, faster build times, and long-term value — all customizable to match your home and property.
A post-frame garage or storage building gives you wide-open interiors without load-bearing walls in the way. That means you can park trucks, RVs, boats, and trailers comfortably — and still have room left for a workshop, lawn equipment, seasonal storage, or a finished living space upstairs.
Sherman Buildings has been constructing residential accessory structures across Minnesota for 50 years. Our crews understand what homeowners actually need from a detached garage or storage building, and we build accordingly — on time, on budget, and built to last.
Gallery
Every Project Includes
Custom Layout
Bay widths, ceiling heights, door placement, and interior partitions are configured to your vehicles, equipment, and storage needs — no off-the-shelf templates.
Wide Overhead Doors
Overhead doors sized for trucks, RVs, boats, and trailers — single-car openings through extra-tall RV-clearance doors and multi-bay configurations.
Steel Roofing
Heavy-gauge, Kynar-coated steel roofing panels rated for Minnesota snow loads. Long service life with minimal maintenance.
Treated Lumber
Ground-contact pressure-treated posts and bottom plates anchor the structure for the long haul, even in wet or freeze-thaw conditions.
Insulation Ready
Framed to accept fiberglass batts, spray foam, or rigid foam if you want a heated, finished interior — now or later.
Snow & Wind Engineering
Every building is engineered to the specific snow and wind loads of your site — no generic specs that leave safety margins to guesswork.
Material That Lasts
Sherman supplies all materials from our own full-service lumber yard, which means tighter quality control and more consistent results than sourcing from multiple suppliers. Every garage and storage building uses the same high-quality components that have made Sherman buildings synonymous with longevity.
Steel roofing panels are heavy-gauge, Kynar-coated for UV and corrosion resistance, and available in a wide range of colors designed to complement your home. Treated lumber posts rated for ground contact form the structural core, anchored in concrete footings sized for your building’s specific loads.
Hardware — anchor bolts, truss plates, girt connections — meets or exceeds structural requirements. Nothing is underspecified. We’d rather overbuild by a margin than have a customer call us about a problem five years later.
Efficient Layouts for Real Garages
Clear-span interiors are the defining feature of a post-frame garage. Without interior columns interrupting the floor plan, you can pull a long-bed truck, a boat on a trailer, or a Class A motorhome straight in without maneuvering around structural posts. Widths from 24 feet up to 60 feet and beyond are achievable with engineered trusses.
Door choice and placement is where most residential garages live or die. We size overhead doors around the vehicles you actually own — 9′ or 10′ tall for standard cars and trucks, 12′–14′ tall for RVs, boats on tandem trailers, and lifted pickups. Single-bay, two-bay, three-bay, and split-side door configurations are all common, and we’ll lay out the bays so you can park and pull without choreographing every move.
If you plan to add a workshop bench, hobby area, lawn-equipment corner, or finished upstairs space, we frame for that from day one. Stairs, lofts, mezzanines, and partition walls can all be designed in — or framed for later if you want to phase the cost.
Built for Minnesota Weather
Minnesota demands more from buildings than most states. Ground snow loads routinely exceed 40 psf in central and northern Minnesota. Wind speeds, frost depth, and temperature swings from −30°F to 100°F all influence the engineering of a properly designed structure.
Every Sherman garage and storage building is engineered to the specific climate data for your county — not generic regional averages. Truss design, post sizing, anchor bolt spacing, and roofing attachment are all calculated to meet or exceed local building code requirements.
This isn’t just regulatory compliance. It’s the difference between a garage roof that holds up through a February blizzard and one that doesn’t. Our crew has been building in Minnesota winters long enough to know what matters.
Minnesota Engineering Standards
- ✓Ground snow load engineering (40–60 psf depending on location)
- ✓90+ mph wind speed design ratings
- ✓Frost-depth concrete footings (42–60 inches)
- ✓Pressure-treated ground-contact posts
- ✓Insulation-ready framing for finished interiors
- ✓Thermal movement allowances for steel panels
- ✓Condensation control with proper ventilation
Why Sherman Buildings?
50 Years of Experience
Sherman Buildings has been constructing post-frame buildings across Minnesota since 1976 — that's 50 years of proven craftsmanship and local expertise.
Fully Custom Design
Every project starts with your vision. We design around your site, your usage, and your budget — no cookie-cutter packages.
On-Site Lumber Yard
We operate our own lumber yard, so every build uses consistent, quality materials sourced and managed in-house.
Minnesota-Engineered
Our buildings are designed for upper Midwest snow loads, wind requirements, and frost depth — code-compliant from day one.
Family Business
Founded by the Kelling family, Sherman Buildings is a family-owned operation. You deal with real people who stand behind their work.
Free Consultations
Not sure where to start? We'll talk through your project, walk your site, and help you understand your options — no obligation.
Garage & Storage Building FAQ
What is a post-frame garage or storage building?
A post-frame (pole) garage is a residential storage building constructed using engineered laminated columns and clear-span trusses. The result is a strong, weather-tight structure with wide-open interiors — ideal for vehicles, boats, RVs, lawn equipment, and household storage — built faster and at lower cost than a comparable stick-framed garage.
What sizes of garages and storage buildings do you build?
Anywhere from a 24′×24′ two-car detached garage to large 40′×60′ (or bigger) multi-bay storage buildings. Common eave heights range from 10′ to 16′, with overhead doors sized to your vehicles — including extra-tall openings for RVs and boats on trailers. We size everything around what you actually park inside, not a catalog template.
Can I park an RV or boat inside?
Yes. RV and boat storage is one of the most common requests we get. We typically design 14′–16′ eave heights with 12′–14′ tall overhead doors, plus extra depth to accommodate longer Class A motorhomes, boats on tandem trailers, and tow vehicles parked behind them. Tell us the longest, tallest thing you need to store and we design around it.
Can I heat and finish the interior?
Yes. Many of our customers finish the interior either at the time of build or down the road. We frame for insulation, run electrical to your specifications, and can rough in for radiant tube heaters, in-floor heat, or forced-air systems. If you plan to finish later, we frame and detail the building so it stays straightforward — no torn-out walls.
Does a storage building need a concrete floor?
For most residential garages and storage buildings, yes — a concrete slab is ideal for vehicle storage, workshop use, and easy cleaning. For seasonal or lawn-equipment storage, some customers choose a compacted gravel floor with a concrete apron at the door. We can pour the slab during the build or rough in for a future pour if you want to defer the cost.
How long does it take to build a residential garage or storage building?
Weather and site permitting, most residential garages and storage buildings are framed, sheathed, and dried-in within one to three weeks of crew arrival. Total project length depends on material delivery, site work, permitting, and any interior finish. Your project manager will give you a realistic schedule before construction starts.
Do I need a permit for a detached garage in Minnesota?
In nearly every Minnesota municipality and township, yes — a permit is required for any detached accessory structure above a small square-footage threshold (typically 120–200 sq ft, depending on jurisdiction). We handle the permit drawings and submit them on your behalf, so you don't have to navigate the county zoning office yourself.
Can the garage match the style of my house?
Absolutely. We offer a wide range of siding, roofing, and trim options — including LP SmartSide lap siding, board-and-batten, stone wainscot, multiple steel roof colors, and trim packages designed to complement traditional homes, modern farmhouses, and cabin-style residences. Bring us a photo of your house and we'll design a building that looks like it belongs.
What is the difference between a garage and a pole barn?
A residential post-frame garage is essentially a smaller, residence-focused version of a pole barn. Both use the same engineered post-and-truss construction, but garages are sized and detailed for residential use — matching house aesthetics, residential-grade overhead doors, and finishes more typical of attached garages. A pole barn is usually larger and more utility-focused, often for ag or commercial storage.
What Our Customers Say
The team was on point from start to finish. Absolutely turnkey and phenomenal — I couldn’t be more pleased with the result.
First-class service all the way. The Mora crew was fast, professional, and a pleasure to work with.
They worked through horrid weather without missing a beat. The crew was a professional representation of everything Sherman stands for.
Ready to Start Your Project?
Let’s talk about your building. Our team offers free consultations with no pressure — just real advice from experienced builders.
Explore More Building Types
Sherman Buildings has been building quality post-frame structures for 50 years. Browse our full range of homes and pole buildings.
