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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 view of a Traditional Colonial New American style home featuring a blend of brick, stone, and horizontal siding with black shutters and teal front door

    Plan 8-1329 – Aster Pass Villa | Traditional – 4-Bed, 2.5-Bath, 2,392 SF – House plan details
  • Front elevation of a New American Craftsman style home featuring stone exterior, horizontal siding, board and batten accents, and decorative wood shutters

    Plan 15-1139 – Aster Pass Hall | New American – 3-Bed, 3-Bath, 2,527 SF – House plan details
  • Front elevation of New American Traditional style house with stone facade, white lap siding, gabled roof, and covered front porch

    Plan 19-1922 – Aster Pass Haven | New American – 3-Bed, 3-Bath, 3,010 SF – House plan details
  • Front elevation of a Modern Farmhouse style home featuring board and batten siding, symmetrical gables, black windows, and a welcoming covered front porch

    Plan 20-1118 – Aster Pass Place | Modern Farmhouse – 4-Bed, 5-Bath, 2,699 SF – House plan details
  • Front elevation of a New American modern traditional suburban house with horizontal siding, stone porch columns, covered front porch, and two-car garage

    Plan 15-1461 – Aster Pass Farm | New American – 3-Bed, 4-Bath, 3,080 SF – House plan details
  • Elevated coastal beach house with lap siding, open balconies, exterior stairs, and pier foundation designed for waterfront living

    Plan 19-1073 – Aster Pass Chalet | Coastal – 4-Bed, 5-Bath, 3,218 SF – House plan details
  • Front elevation of a New American modern traditional house featuring painted brick, board and batten accents, steep gables, and black framed windows

    Plan 20-2073 – Aster Fork Manor | New American – 5-Bed, 5-Bath, 1,721 SF – House plan details
  • Front view of a Modern Farmhouse featuring stone and horizontal siding, gabled rooflines, and inviting front porch entryway

    Plan 16-1769 – Aster Fork Estate | Modern Farmhouse – 2-Bed, 2.5-Bath, 3,309 SF – House plan details
  • Front exterior of a New American style home with painted brick, horizontal siding, arched entry, and manicured lawn

    Plan 18-1940 – Aster Fork Retreat | New American – 5-Bed, 5-Bath, 5,199 SF – House plan details
  • Front elevation of a New American modern traditional house with painted brick exterior, steep gables, symmetrical windows, and classic entry porch

    Plan 19-1560 – Aster Fork House | New American – 5-Bed, 0.5-Bath, 4,000 SF – House plan details
  • Front exterior of a New American style two-story home with stone accents, horizontal siding, and covered front porch

    Plan 18-1891 – Aster Fork Homestead | New American – 4-Bed, 3-Bath, 2,811 SF – House plan details
  • Front view of Modern Farmhouse style home featuring board and batten siding, shingle gables, and a two-car garage with craftsman details

    Plan 20-1453 – Aster Fork Farmhouse | Modern Farmhouse – 3-Bed, 2-Bath, 1,571 SF – House plan details
  • Front elevation of a New American Modern Traditional house with horizontal siding, stone accents, covered porch, and attached garage

    Plan 9-1244 – Aster Fork Lodge | New American – 4-Bed, 4-Bath, 3,609 SF – House plan details
  • Front view of a Colonial Traditional style two-story home with white lap siding, stone accents, black shutters, and a covered front porch

    Plan 10-1615 – Aster Fork Residence | Colonial – 3-Bed, 2.5-Bath, 2,294 SF – House plan details
  • Front elevation of a Traditional Craftsman style home with brick exterior, lap siding accents, gabled rooflines, and attached two-car garage

    Plan 13-1967 – Aster Fork Villa | Traditional Craftsman – 3-Bed, 2-Bath, 3,200 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.