Large Sheds

Large Sheds — DuraMax workshops, garages, and insulated buildings from 120 to 189 square feet

The Large Sheds collection at Durasheds is where DuraMax stops making storage buildings and starts making backyard structures — substantial outbuildings for serious workshops, hobby rooms, vehicle storage, contractor-grade equipment, and year-round usable space. Every product in this collection delivers more than 120 square feet of usable interior, and several function as small backyard buildings rather than traditional sheds.

This collection includes 6 products across three distinct sub-categories: premium uninsulated sheds (Apex Pro and WoodBridge Plus), prefab vinyl garages (10.5x15 and 10.5x18), and insulated buildings (Flat Top and Garden Glass). Every product ships free with curbside lift-gate delivery automatically included and carries DuraMax's limited warranty (15-year on uninsulated, 7-year on the Garden Glass Room).

Three sub-categories within large structures — and how to choose

1. Premium uninsulated sheds — Apex Pro 15x8 and WoodBridge Plus 10x13

The premium uninsulated tier delivers the largest traditional shed footprints DuraMax makes, with fire-retardant vinyl construction, metal-reinforced wall columns, and the same aesthetic and durability standards as the smaller premium lines — just at meaningfully larger sizes.

• DuraMax WoodBridge Plus 10.5 x 13 at $1,659 (regularly $2,199) — 137 square feet of walk-in storage in the signature WoodBridge Plus two-tone beige-and-brown aesthetic. The largest WoodBridge Plus configuration, with foundation framing kit included, built-in side window, and tall walk-in interior. The most popular large traditional shed for serious hobbyist and contractor use.
• DuraMax Apex Pro 15 x 8 at $1,989 (regularly $2,599) — 120 square feet with the premium Apex Pro aesthetic: two roof skylights, two large front windows, dual double-door entry (front AND side access), and a galvanized-steel apex-lift foundation. Designed to "look more like a home than a shed" — the most architecturally distinctive large shed in the DuraMax catalog.

Choose the WoodBridge Plus 10.5 x 13 if you want maximum interior floor space at a value price; choose the Apex Pro 15 x 8 if you want the most natural light, dual-direction access, and the most premium exterior aesthetic.

2. Prefab vinyl garages — 10.5x15 and 10.5x18

DuraMax's prefab vinyl garage line scales the same 10.5-foot-wide front facade of the WoodBridge series into larger depths designed specifically for vehicle storage. These aren't traditional sheds — they're full prefab garages, engineered as a faster, more affordable alternative to stick-built construction for buyers who need to park a car, truck, motorcycle, ATV, or workshop equipment under cover.

• DuraMax 10.5 x 15 Vinyl Garage — 158 square feet of interior space, enough for a compact car, midsize SUV, or substantial workshop equipment. The most affordable path into prefab garage ownership.
• DuraMax 10.5 x 18 Vinyl Garage — 189 square feet of interior space, the largest single-bay vinyl garage in the DuraMax catalog. Accommodates full-size sedans, mid-size pickup trucks, or workshop setups with vehicle plus equipment alongside.

Choose a 10.5 x 15 or 10.5 x 18 vinyl garage if you need vehicle storage (car, truck, motorcycle), substantial workshop space at a single-bay footprint, or want a prefab alternative to a $15,000–$25,000 stick-built garage. Browse our full DuraMax garages collection for additional configurations.

3. Insulated buildings — Flat Top 13x10 and Garden Glass 13x10

The insulated tier is a completely different product category than the rest of the large-sheds collection — engineered for year-round comfortable human occupancy rather than storage or vehicle use. Both 13x10 buildings deliver 130 square feet of climate-controlled space with 25-gauge galvanized steel construction, PU foam insulation, and electrical-ready design.

• DuraMax Flat Top Insulated Building 13x10 — 130 square feet of climate-controlled space with solid insulated wall panels (no glass walls). Engineered for buyers who want temperature control without the bright sun-room aesthetic — year-round hobbyist workshops, home gyms, climate-sensitive storage, photography studios, or backyard man-cave/game-room retreats.
• DuraMax Garden Glass Building 13 x 10 at $15,789 — 130 square feet of insulated, glass-walled space for buyers who want maximum natural daylight. Full home offices, art and photo studios, yoga and Pilates studios, plant conservatories, or (with buyer-supplied modifications including bathroom and kitchenette) ADU-grade backyard living space.

Choose the Flat Top if your use case is workshop, gym, or climate-sensitive storage where natural light isn't a priority; choose the Garden Glass if you want a bright, sun-filled backyard room for office, studio, or potential ADU use. Browse our full insulated buildings collection for additional configurations.

How to choose between the three large-shed sub-categories

• Pick a premium uninsulated shed (WoodBridge Plus 10.5x13 or Apex Pro 15x8) if your use case is storage, occasional workshop work, or hobby setups, and you don't need temperature-controlled comfort. Best dollars-per-square-foot value in the large range, with prices starting at $1,659.
• Pick a vinyl garage (10.5x15 or 10.5x18) if you need to park a car, truck, or motorcycle under cover, or want the largest possible interior footprint for workshop and equipment storage. Garages give you more floor space per dollar than sheds and accommodate vehicles that sheds can't.
• Pick an insulated building (Flat Top 13x10 or Garden Glass 13x10) if you'll be inside the building for hours at a stretch year-round and need climate-controlled comfort. Premium price point ($15,789+ for the Garden Glass) but a completely different product category than the rest of this collection.

The price-to-square-foot breakdown

Approximate dollars-per-square-foot for the products with confirmed pricing:

• WoodBridge Plus 10.5 x 13 — $1,659 / 137 sq ft = $12.11 per sq ft (best traditional-shed value in the large range)
• Apex Pro 15 x 8 — $1,989 / 120 sq ft = $16.58 per sq ft (premium tier — paying for aesthetics and features)
• Garden Glass 13 x 10 — $15,789 / 130 sq ft = $121.45 per sq ft (insulated building tier — different product category, different value math)

The WoodBridge Plus 10.5 x 13 is the best dollars-per-square-foot value in the entire Durasheds catalog. The Garden Glass costs roughly 10x per square foot, but that price reflects the steel-and-glass insulated construction that lets you occupy the building year-round — a fundamentally different use case than uninsulated storage.

Need less space than a large shed offers?

If 120 square feet feels excessive for your needs, browse our medium sheds collection (48 to 110 square feet, 7 products including the popular WoodBridge Plus 10.5x8 and the value-tier DuraMate 8x6 at $889). For under-50-square-foot compact storage, browse our small sheds collection with SideMate, YardMate Plus, and StoreAway deck boxes.

Why buy your large shed or building from Durasheds

Every order at Durasheds.com ships free to the continental United States, with free curbside lift-gate delivery automatically included — essential on large-shed kits that weigh 1,500–4,500 pounds depending on whether you're ordering a traditional shed, vinyl garage, or insulated building. We back every product with our Lowest Price Guarantee, register your DuraMax warranty for you (15-year on traditional sheds and garages, 7-year on the Garden Glass Room), and offer Shop Pay financing at checkout — particularly meaningful on the premium Garden Glass Building where monthly financing makes the $15,789 price more accessible.

Comparing the WoodBridge Plus 10.5x13 to the Apex Pro 15x8, deciding between a vinyl garage and a traditional shed, or weighing the Flat Top Insulated Building against the Garden Glass Room? Our team of real DuraMax experts is available Monday–Friday, 9 AM to 5 PM EST. We'll help you compare specs, walk you through foundation prep and assembly considerations, and order in under 20 minutes — or learn more about who we are and why thousands of homeowners trust Durasheds as their authorized DuraMax dealer.