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ADU house Plans (450-800 sq. ft.) – Smart, Compact Living with Big Possibilities

Explore Affordable ADU Floor Plans Perfect for Backyard Units, Guest Suites, or Rentals

Find Your Dream house

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"ADU5 portable GPS tracking device"

ADU House Plans – Smart, Stylish, and Perfect for Compact Living

If you’re looking for a smart way to expand your living space, generate rental income, or create a private guest suite, our collection of ADU house plans is the perfect place to start. Also known as Accessory Dwelling Units, these compact designs are ideal for backyard cottages, in-law suites, guest houses, or tiny rental properties. Every one of our ADU house plans comes with editable CAD files, printable PDFs, and an unlimited-build license, giving you total control and maximum flexibility.

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Found 2,712 House Plans!

  • Front elevation of a French Provincial luxury home featuring full stone exterior, grand entry, symmetrical windows, and refined European architectural detailing

    Plan 11-1872 – Aster Willow Place | French Provincial – 5-Bed, 5-Bath, 9,456 SF – House plan details
  • Southern Farmhouse style home featuring board and batten siding, standing seam metal roof, wraparound porch, and detached garage wing

    Plan 13-1370 – Aster Willow Farm | Farmhouse – 3-Bed, 3.5-Bath, 2,397 SF – House plan details
  • Elegant 4-Bedroom House Plan with French Country Charm

    Plan 14-1637 – Aster Willow Chalet – House plan details
  • Front exterior view of a Craftsman New American style home featuring stone veneer entry tower, horizontal siding, gabled rooflines, and an attached two-car garage

    Plan 13-1453 – Aster Oak Manor | Craftsman – 5-Bed, 4-Bath, 4,529 SF – House plan details
  • Front exterior view of a New American Coastal Craftsman style home with board-and-batten siding, stone accents, gabled rooflines, and covered front porch

    Plan 15-1920 – Aster Oak Estate | New American – 4-Bed, 3.5-Bath, 2,919 SF – House plan details
  • Craftsman Traditional house exterior with stone entry, gable roof, and front porch

    Plan 12-2322 – Aster Oak Retreat | Craftsman – 4-Bed, 3-Bath, 2,802 SF – House plan details
  • Front view of a three-story Coastal Low Country style home featuring modern farmhouse design and crisp white board and batten siding with wraparound porches.

    Plan 20-2159 – Aster Oak Cottage | Coastal – 3-Bed, 2.5-Bath, 3,057 SF – House plan details
  • Craftsman Ranch house with blue lap and shingle siding, white trim, red shutters, centered gables, and 4pm daylight with realistic depth and shadows

    Plan 13-1366 – Aster Oak House | Craftsman Ranch – 4-Bed, 3-Bath, 3,096 SF – House plan details
  • Front elevation of a New American Modern Traditional house featuring horizontal siding, stone accents, and a welcoming covered porch

    Plan 16-1024 – Aster Oak Homestead | New American – 4-Bed, 3-Bath, 2,910 SF – House plan details
  • Front elevation of Traditional Craftsman 2-story house with brick exterior, shake siding accents, covered porch, and 2-car garage

    Plan 10-1517 – Aster Oak Farmhouse | Traditional Craftsman – 4-Bed, 3.5-Bath, 2,547 SF – House plan details
  • Front elevation of Craftsman Farmhouse style home with lap siding, stone veneer accents, gabled rooflines, and wide covered front porch at sunset

    Plan 10-1918 – Aster Oak Lodge | Craftsman Farmhouse – 3-Bed, 3-Bath, 2,890 SF – House plan details
  • Front elevation of a Southern Farmhouse home featuring lap siding, dormer windows, and a wide covered front porch

    Plan 8-1757 – Aster Oak Residence | Southern Farmhouse – 2-Bed, 2-Bath, 3,472 SF – House plan details
  • Front exterior of a Classical Southern style home with wraparound porch, horizontal siding, dormers, and symmetrical façade

    Plan 10-1716 – Aster Oak Villa | Classical Southern – 4-Bed, 3.5-Bath, 3,932 SF – House plan details
  • Front exterior view of a contemporary modern two-story house featuring smooth stucco walls, standing seam metal roof, black-framed windows, and a curved driveway

    Plan 20-1818 – Aster Oak Hall | Contemporary – 4-Bed, 3-Bath, 6,062 SF – House plan details
  • Front exterior view of a luxury Traditional Colonial style home featuring a brick façade, symmetrical design, gabled rooflines, and manicured landscaping

    Plan 10-1861 – Aster Oak Haven | Traditional Colonial – 3-Bed, 3.5-Bath, 3,404 SF – House plan details

at Is an ADU?

ADU stands for Accessory Dwelling Unit. It’s a smaller, self-contained residential structure that sits on the same lot as a primary home. Our ADU house plans are designed to meet a variety of uses, including:

  • Backyard rental units
  • Multigenerational housing
  • Guest cottages or studios
  • Home offices with living space
  • Vacation or short-term rental units

Why Choose Our ADU House Plans?

  • Every Plan Includes CAD + PDF Files – Customize and build with ease.
  • Unlimited Build License – Use your ADU plan multiple times, anywhere you want.
  • Structural Engineering Included – All plans are engineered and code-compliant.
  • Free Foundation Changes – Choose slab, crawlspace, or basement at no extra charge.
  • Plans Built After 2008 – Modern layouts designed to reflect today’s zoning and space efficiency.

Who Are ADU House Plans Perfect For?

ADU house plans are ideal for:

  • Property owners in urban areas where land is limited
  • Homeowners wanting a flexible guest suite or rental opportunity
  • Families needing private space for elderly parents or grown children
  • Contractors and developers building multiple ADUs across lots

Common Features in Our ADU Designs

Our ADU house plans may be small in square footage, but they’re big on livability. Typical features include:

  • Open floor plans with combined living and dining areas
  • Efficient kitchens with full appliance layouts
  • 1–2 bedrooms with closet space
  • Full bathrooms
  • Separate entrances for privacy
  • Loft or attic storage options

Build Anywhere With Confidence

Our ADU house plans are designed with flexibility and code compliance in mind. Whether you’re building in California, Texas, Oregon, or beyond—our plans are crafted with local building practices and energy efficiency in mind. And with full CAD files and engineering support, your builder can make adjustments for your exact site or city requirements.

Explore Related Small Living Designs

What’s Included in Every ADU House Plan Package

  • CAD files for editing
  • PDF files for printing
  • Floor plans with dimensions
  • Elevations and cross-sections
  • Roof framing and structural layouts
  • Electrical layout
  • Foundation plan (customizable for free)
  • Preview all plan sheets here

Frequently Paired Features

Learn More About ADU Development

Ready to Build Smarter?

Our ADU house plans offer unbeatable flexibility and affordability. Whether you're adding an income-producing rental or designing a backyard guest home, we give you everything you need—engineered drawings, editable CAD files, and the freedom to build on your terms. No hidden fees, just great designs you can trust.

Explore ADU House Plans Now →

Frequently Asked Questions

 

What does ADU stand for?
ADU stands for Accessory Dwelling Unit—a smaller home that shares a lot with a main residence.

Can I build multiple ADUs from one plan?

Yes! Our ADU house plans come with an unlimited-build license.

Are ADU house plans legal in my area?

ADU legality depends on local zoning laws, but our plans can be modified to meet most codes.

Do your plans include engineering?

Yes! All ADU house plans include structural engineering.

Can I customize the foundation or roof of my ADU plan?

Absolutely. We offer free foundation changes and affordable layout edits.