12x20 Garden Sheds, Pool Houses & Dog Kennels

A 12×20 structure offers a generous footprint for homeowners looking to bring purpose and style to their outdoor space. Whether you’re planning a functional garden shed, a relaxing pool house, or a custom dog kennel, this size delivers the flexibility you need to bring your project to life. Built by hand in Indiana, every structure from Miller’s Mini Barns is designed with lasting quality, thoughtful details, and customization options to match your exact vision.

  • 20 year warranty
  • durable & weather resistant
  • low maintenance
  • UV resistant
  • 95% recycled material
  • Durable

Browse 12x20 Garden Sheds, Pool Houses & Dog Kennels

His & Hers

RMB224|1220HH|453

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His & Hers

RMB224|1220HH|471

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His & Hers Metal Shed

RMB225|1220HH|731

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His & Hers Metal Shed

RMB125|1220HH|697

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Lofted Garden Shed

RMB224|1220PLGS|458

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Lofted Garden Shed

RMB224|1220PLGS|475

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Lofted Garden Shed

RMB224|1220PLGS|481

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Lofted Garden Shed

RMB224|1220PLGS|482

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Lofted Garden Shed

RMB224|1220PLGS|443

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Lofted Garden Shed

RMB224|1220PLGS|444

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Metal Dog Kennel

RMB323|1220DG|322

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Painted Garage

RMB325|1220PGRG|758

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Painted Lofted Garden Shed

RMB124|1220PLGS|385

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Pool House

RMB224|1220VPH|398

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Standard Metal Shed

RMB224|1220SM|469

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Standard Metal Shed

RMB224|1220SM|470

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12 x 20 His & Hers Shed – RMB224-420

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His & Hers - RMB0025

His & Hers – RMB0025

RMB0025

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His & Hers - RMB0095

His & Hers – RMB0095

RMB0095

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Lofted Barn Garage - MMB10506

Lofted Barn Garage – MMB10506

MMB1015061220LBG

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Lofted Garden Shed - RMB0004

Lofted Garden Shed – RMB0004

RMB0004

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Metal 12 x 20 H & H Style Ivory with Clay Trim & Clay Metal Roof

Metal 12 x 20 H & H Style Ivory with Clay Trim & Clay Metal Roof

RMB0038

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Metal Garage - RMB0040

Metal Garage – RMB0040

RMB0040

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Model 10111 12 x 20 Clay with White Trim & Green Metal Roof A-Cottage

Model 10111 12 x 20 Clay with White Trim & Green Metal Roof A-Cottage

MMB101111220AC

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Pool House - RMB0017

Pool House – RMB0017

RMB0017

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Standard Metal Garage - RMB0039

Standard Metal Garage – RMB0039

RMB0039

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Model 124417 12 x 20 Wood Pergola

Model 124417 12 x 20 Wood Pergola

MMB124417

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