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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

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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 New American Modern Traditional house featuring horizontal siding, stone accents, black shutters, and a symmetrical two-story design

    Plan 13-1317 – Aster Fork Hall | New American – 4-Bed, 3.8-Bath, 4,100 SF – House plan details
  • Front exterior view of a Traditional Colonial style home featuring brick façade, dormer windows, white trim, and a side-entry garage

    Plan 20-1277 – Aster Fork Haven | Traditional Colonial – 4-Bed, 5-Bath, 2,466 SF – House plan details
  • Front elevation of a Cape Cod Traditional house plan featuring white horizontal lap siding, stone veneer wainscot, black shutters, dormer windows, and a covered front porch with columns

    Plan 14-1820 – Aster Fork Place | Cape Cod – 4-Bed, 5-Bath, 4,379 SF – House plan details
  • Front elevation of blue Craftsman Cottage style home with horizontal lap siding, white trim, gabled rooflines, and covered front porch at sunset

    Plan 10-1806 – Aster Fork Farm | Craftsman Cottage – 3-Bed, 3-Bath, 2,587 SF – House plan details
  • Plan 19-1766 - Aster Fork Chalet | Tudor-Style - 5-Bed, 5+-Bath, 4,183 SF

    Plan 19-1766 – Aster Fork Chalet | Tudor-Style – 5-Bed, 5+-Bath, 4,183 SF – House plan details
  • Front elevation of a Traditional Colonial home featuring horizontal siding, brick foundation accents, and a symmetrical two-story design with black shutters and gable rooflines

    Plan 9-1121 – Aster Crest Manor | Traditional Colonial – 4-Bed, 3-Bath, 3,017 SF – House plan details
  • Front elevation of a New American Modern Traditional house with lap siding, board-and-batten gables, and a covered front porch

    Plan 18-1173 – Aster Crest Estate | New American – 4-Bed, 3.5-Bath, 2,806 SF – House plan details
  • Front elevation of modern farmhouse ranch style home with white board and batten siding, gable rooflines, and covered front porch

    Plan 10-1812 – Aster Crest Retreat | Modern Farmhouse – 3-Bed, 3.5-Bath, 3,176 SF – House plan details
  • Front exterior of a modern farmhouse coastal style home with white board and batten siding, covered porch, gabled roof, and detached garage

    Plan 19-1441 – Aster Crest Cottage | Modern Farmhouse – 4-Bed, 4-Bath, 2,472 SF – House plan details
  • Front elevation of a Modern Farmhouse style home featuring board and batten siding, gabled rooflines, and a welcoming covered front porch

    Plan 14-1671 – Aster Crest House | Modern Farmhouse – 4-Bed, 3.5-Bath, 3,552 SF – House plan details
  • Front elevation of a Traditional Ranch style home featuring a blend of horizontal siding, board and batten, and stone wainscoting with a two-car garage

    Plan 19-2357 – Aster Crest Homestead | Traditional Ranch – 3-Bed, 2-Bath, 1,536 SF – House plan details
  • Front elevation of a Coastal Traditional Shingle Style house featuring cedar shingle siding, stone accents, covered porch, and attached garage

    Plan 15-1427 – Aster Crest Farmhouse | Coastal Traditional – 4-Bed, 3.5-Bath, 3,978 SF – House plan details
  • Front exterior of a New American style home featuring brick construction, stone accents, multi-gable rooflines, and classic suburban curb appeal

    Plan 10-1929B – Aster Crest Lodge | New American Duplex – 4-Bed, 3.5-Bath, 8,754 SF – House plan details
  • Front elevation of a Cape Cod style home with Colonial Revival symmetry, lap siding, gabled roof, and centered entry

    Plan 14-1489 – Aster Crest Residence | Cape Cod – 6-Bed, 5.5-Bath, 5,507 SF – House plan details
  • Front elevation of a Modern Farmhouse style home featuring board and batten siding, stone entry arch, black shutters, and symmetrical New American design

    Plan 13-1094 – Aster Crest Villa | Modern Farmhouse – 5-Bed, 4.5-Bath, 3,160 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.