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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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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 Craftsman Cottage style house featuring stone accents, board and batten siding, and a welcoming double-garage entry

    Plan 11-1383 – Aster Crest Hall | Craftsman – 4-Bed, 3-Bath, 2,595 SF – House plan details
  • french-country-craftsman-house-plan

    Plan 10-1296 – Aster Crest Haven | French Country Craftsman – 3-Bed, 3.5-Bath, 3,385 SF – House plan details
  • Front elevation of a luxury Modern Southern Farmhouse with white board and batten siding, stone accents, large wrap porch, and an arched breezeway connecting the home to the garage

    Plan 10-1670 – Aster Crest Place | Modern Farmhouse – 5-Bed, 5-Bath, 7,500+ SF – House plan details
  • Front exterior view of a Traditional cottage-style garage apartment with horizontal lap siding, gable roof, and two-car garage below

    Plan 18-1280 – Aster Crest Chalet | Traditional Garage – 3-Bed, 3-Bath – House plan details
  • Front elevation of a New American modern traditional house with lap siding, board and batten gables, stone accents, and a covered front porch

    Plan 12-2224 – Aster Woods Manor | New American – 4-Bed, 3.5-Bath, 3,620 SF – House plan details
  • Front elevation of a New American Traditional Colonial style home featuring stone veneer, horizontal siding, symmetrical windows, and a covered front porch

    Plan 12-2916 – Aster Woods Estate | New American – 4-Bed, 3.5-Bath, 3,270 SF – House plan details
  • Front elevation of a Traditional Colonial style home with horizontal siding, symmetrical windows, gabled rooflines, and a welcoming covered front porch

    Plan 20-1274 – Aster Woods Retreat | Traditional Colonial – 4-Bed, 5-Bath, 4,236 SF – House plan details
  • Front elevation of a New American Modern Traditional style home with horizontal siding, stone accents, steep gabled rooflines, and symmetrical windows

    Plan 15-1243 – Aster Woods Cottage | New American – 4-Bed, 5-Bath, 5,052 SF – House plan details
  • Front elevation of a Cape Cod Cottage style home featuring white horizontal siding, black shutters, dormer window, and a classic gable roof design

    Plan 17-2123 – Aster Woods House | Cape Cod – 3-Bed, 2.5-Bath, 5,029 SF – House plan details
  • Front exterior of a Traditional Colonial style home featuring brick facade, horizontal siding, symmetrical windows, gabled rooflines, and a side-entry garage

    Plan 12-2299 – Aster Woods Homestead | Traditional Colonial – 6-Bed, 3.5-Bath, 8,185 SF – House plan details
  • Front elevation of a Traditional Colonial style home featuring a red brick exterior, arched entry doorway, multi-pane windows, and balanced two-story symmetry

    Plan 8-1461 – Aster Woods Lodge | Traditional Colonial – 3-Bed, 4-Bath, 4,347 SF – House plan details
  • Front elevation of a Modern Farmhouse and New American style home featuring board and batten siding, black window accents, gabled rooflines, and a welcoming covered front porch

    Plan 18-1137 – Aster Woods Residence | Modern Farmhouse – 5-Bed, 3.5-Bath, 3,701 SF – House plan details
  • Front exterior view of a modern farmhouse style two-story house featuring board and batten siding, stone accents, black windows, and a covered front porch

    Plan 19-2130 – Aster Woods Villa | Modern Farmhouse – 4-Bed, 3.5-Bath, 2,722 SF – House plan details
  • Front elevation of a Modern Farmhouse style home with board-and-batten siding, gable dormers, covered porch, and wood shutters

    Plan 16-1580 – Aster Woods Hall | Modern Farmhouse – 4-Bed, 3.5-Bath, 3,595 SF – House plan details
  • Front elevation of Coastal Traditional home with white horizontal lap siding, classical columns, covered porches, and symmetrical Colonial-inspired facade

    Plan 15-1388 – Aster Woods Place | Coastal Traditional – 4-Bed, 4.5-Bath, 3,537 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.