ADU House Plans (450–800 Sq. Ft.) – Smart, Compact Living with Big Possibilities

Explore affordable ADU floor plans perfect for backyard units, guest suites, rental cottages, in-law spaces, and flexible small-home living.

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Found 2,712 House Plans!

  • Front elevation of Coastal Farmhouse style home with blue lap siding, board and batten accents, and standing seam metal roof

    Plan 15-1530 – Aster Point Retreat | Coastal Farmhouse – 4-Bed, 3.5-Bath, 2,599 SF – House plan details
  • Front exterior view of a New American style suburban house with white siding, stone accents, covered front porch, and attached two-car garage

    Plan 10-1782 – Aster Point Lodge | New American – 4-Bed, 4-Bath, 2,744 SF – House plan details
  • Front view of Modern Farmhouse Cottage home featuring board and batten siding, stone accents, and a welcoming front porch with gable roof design

    Plan 14-2045 – Aster Point Residence | Modern Farmhouse – 3-Bed, 3-Bath, 1,874 SF – House plan details
  • Front exterior view of a Traditional Colonial style home with horizontal siding, symmetrical windows, and classic entry porch

    Plan 16-1138 – Aster Point Villa | Traditional Colonial – 3-Bed, 3.5-Bath, 3,453 SF – House plan details
  • Stunning 2-Story House Plan with Vaulted Ceilings and CAD Blueprints

    Plan 14-1564 – Aster Point Hall – House plan details
  • Front elevation of coastal shingle style house with horizontal clapboard siding, dormer windows, covered porch, and elevated foundation

    Plan 15-1602 – Aster Point Haven | Coastal – 4-Bed, 4.5-Bath, 2,363 SF – House plan details
  • Front view of a Traditional Ranch home featuring brick exterior, gabled rooflines, dormer windows, and an inviting covered entry porch

    Plan 11-1249 – Aster Crossing Cottage | Traditional Ranch – 3-Bed, 3-Bath, 3,276 SF – House plan details
  • Front elevation of a modern farmhouse style two-story home with white lap siding, black shutters, brick accents, and a covered entry

    Plan 14-2179 – Aster Crossing Farmhouse | Modern Farmhouse – 4-Bed, 3.5-Bath, 2,237 SF – House plan details
  • Front elevation of Modern Farmhouse style home with white board and batten exterior, black windows, dormers, and two-car garage

    Plan 17-1094 – Aster Crossing Lodge | Modern Farmhouse – 4-Bed, 4-Bath, 4,370 SF – House plan details
  • Front elevation of coastal Low Country style home with elevated foundation, horizontal lap siding, covered porch, and metal roof

    Plan 14-1640 – Aster Crossing Place | Coastal – 4-Bed, 4-Bath, 2,882 SF – House plan details
  • Front elevation of a New American style two-story home with stone veneer, horizontal siding, gabled rooflines, and covered entry porch

    Plan 17-1784 – Aster Crossing Chalet | New American – 4-Bed, 3.5-Bath, 5,335 SF – House plan details
  • Front exterior view of a modern farmhouse style home featuring board and batten siding, steep gable roof, covered porch, and attached two-car garage

    Plan 11-2068 – Aster Landing Manor | Modern Farmhouse – 5-Bed, 3-Bath, 2,773 SF – House plan details
  • Front angle view of a Modern Farmhouse style home featuring horizontal lap siding, gable rooflines, and a welcoming covered porch entry.

    Plan 20-2132 – Aster Landing Retreat | Modern Farmhouse – 3-Bed, 2.5-Bath, 2,035 SF – House plan details
  • Front elevation of a New American style home with traditional Colonial influences, blue lap siding, white trim, and balanced two-story design

    Plan 18-1360 – Aster Landing Cottage | New American – 3-Bed, 2-Bath, 4,033 SF – House plan details
  • Front elevation of a Southern Farmhouse home with horizontal lap siding, inviting covered porch, and traditional architectural detailing

    Plan 17-1765 – Aster Landing Homestead | Southern Farmhouse – 3-Bed, 2-Bath, 1,636 SF – House plan details
  • Front elevation of a New American Modern Traditional house featuring horizontal siding, stone accents, symmetrical gables, and an attached two-car garage

    Plan 13-1213 – Aster Landing Lodge | New American – 3-Bed, 3-Bath, 3,072 SF – House plan details
  • Front elevation of a Modern Farmhouse New American style home featuring horizontal siding, stone accents, black shutters, and a welcoming covered entry

    Plan 13-1482 – Aster Landing Residence | Modern Farmhouse – 3-Bed, 3.5-Bath, 2,871 SF – House plan details
  • Front elevation of Traditional Colonial style two-story home with white horizontal siding, black shutters, covered porch, and detached two-car garage at sunset

    Plan 11-1466 – Aster Landing Villa | Traditional Colonial – 4-Bed, 3-Bath, 3,292 SF – House plan details
  • Front elevation of a modern farmhouse style home featuring board and batten siding, standing seam metal roof, covered porch, and symmetrical design

    Plan 16-1239 – Aster Landing Hall | Modern Farmhouse – 4-Bed, 3-Bath, 6,001 SF – House plan details
  • Front elevation of a Modern Farmhouse style home with white horizontal lap siding, gabled rooflines, black shutters, and a two-car garage

    Plan 10-1271 – Aster Landing Farm | Modern Farmhouse – 6-Bed, 6-Bath, 4,471 SF – House plan details
  • Front exterior of a New American style home with brick and siding exterior, dormer windows, gabled rooflines, and side-entry garage

    Plan 10-1929 – Auburn Meadow Residence | Traditional Duplex – 4-Bed, 3.5-Bath, 8,754 SF – House plan details
  • Front exterior of a Traditional New American style home with horizontal siding, brick accents, symmetrical gables, and attached two-car garage

    Plan 11-1394 – Aster Springs Cottage | New American – 5-Bed, 4-Bath, 3,137 SF – House plan details
  • Front exterior view of a New American style home with brick facade, shingle siding accents, steep gabled rooflines, and side-entry garage

    Plan 11-1245 – Aster Springs Farmhouse | New American – 4-Bed, 4.5-Bath, 4,710 SF – House plan details
  • Front view of a Traditional Colonial home with red brick exterior, symmetrical design, dormer windows, and black shutters on manicured lawn

    Plan 16-1237 – Aster Springs Residence | Traditional – 3-Bed, 3-Bath, 2,529 SF – House plan details
  • Front elevation of a New American style two-story home featuring board and batten siding, stone accents, symmetrical windows, and an attached two-car garage

    Plan 20-1085 – Aster Springs Villa | New American – 4-Bed, 4-Bath, 1,978 SF – House plan details
ADU House Plans

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, home offices, tiny rentals, or flexible small-home living.

Modern ADU house plan with compact backyard living design

What Is an ADU?

ADU stands for Accessory Dwelling Unit. It is a smaller, self-contained residential structure located on the same property as a primary home. ADUs are commonly used as backyard rental units, private guest cottages, in-law suites, compact home offices with living space, or short-term vacation rentals where local rules allow.

Designed for Smart, Compact Living

ADU house plans make it possible to add valuable living space without building a full-size home. These efficient layouts are designed to make every square foot count while still offering privacy, comfort, storage, and everyday functionality.

1

Backyard Rental Potential

Create an income-producing rental unit, long-term tenant space, or short-term stay option where local zoning allows ADU use.

2

Guest or In-Law Suite

Give family members, aging parents, adult children, or guests a private living space close to the main home but still independent.

3

Efficient Small Footprints

Compact layouts combine living, dining, kitchen, bedroom, bathroom, and storage needs into a smaller, smarter residential design.

4

Flexible Property Value

An ADU can add usable square footage, improve property flexibility, and create more options for changing family or investment needs.

Premium Plan Features Included With Every ADU Design

Every ADU house plan includes editable CAD files and printable PDFs, giving you more control when working with builders, designers, engineers, or local permitting offices. These compact plan packages are built for flexibility from the start.

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CAD & PDF Files

Your ADU plan package includes editable CAD files and printable PDFs, making it easier to customize the design for your site and local requirements.

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Unlimited Build License

Use your ADU plan more than once without paying for a new license every time, especially useful for builders, investors, and repeat projects.

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Engineering Included

Structural engineering is included to help support a smoother path toward construction and give your builder a stronger plan package to work from.

These extras can save you thousands compared to competitors who charge separately for CAD files, additional builds, foundation changes, or engineering.

Learn more about our included CAD files, unlimited-build license, free foundation modifications, and structural engineering.

Who Are ADU House Plans Perfect For?

ADU house plans are popular with homeowners, families, investors, and builders who want a compact design that can serve many different purposes. From rental income to multigenerational living, ADUs offer big possibilities in a smaller footprint.

  • Homeowners with extra backyard space who want a guest cottage, rental unit, studio, office, or private retreat.
  • Families needing flexible housing for aging parents, adult children, guests, caregivers, or multigenerational living.
  • Investors and developers looking for compact, repeatable residential designs with broad rental and resale appeal.
  • Urban property owners who want to make better use of limited land with a smaller detached or secondary dwelling.

ADU rules vary by city, county, and state, so always confirm local zoning, setbacks, parking requirements, utility rules, and permitting needs before building.

Common Features in Our ADU Designs

ADU house plans may be small in square footage, but the best designs are big on livability. Smart room flow, built-in storage, efficient kitchens, private sleeping areas, and separate entrances help these compact homes feel complete.

A

Open Living Areas

Combined living, dining, and kitchen areas help small ADUs feel larger, brighter, and easier to furnish.

B

Efficient Kitchens

Compact kitchens can include full appliance layouts, smart storage, and practical prep space without wasting square footage.

C

Private Bedrooms

Many ADU plans include one bedroom, two bedrooms, studio layouts, or flexible sleeping areas depending on the design.

D

Separate Entrances

A private entry helps ADUs work better for guests, tenants, in-laws, home offices, or independent living.

Explore Related Small Living Designs

If you like ADU house plans, you may also want to compare one-bedroom homes, small house plans, modern designs, ranch layouts, and detached garage plans with living space.

1 Bedroom House Plans

Efficient layouts for compact living, guest spaces, rentals, or private backyard homes.

Small Home Plans

Smart, affordable designs that make efficient use of every square foot.

Modern House Plans

Clean lines, simple forms, open interiors, and contemporary curb appeal.

Detached Garage Living

Garage apartments, guest suites, and flexible living space separated from the main house.

All-Inclusive Benefits That Set Us Apart

An ADU plan package should be complete, flexible, and easy to adapt. Our included benefits help homeowners, builders, and investors get more value from every purchase.

Feature Included With Our ADU House Plans?
CAD and PDF files Yes — included
Structural engineering Yes — included
Unlimited build license Yes — included
Free foundation changes Yes — included
Preview all sheets before purchase Yes — included

Our pricing is lower than all major competitors, and our plan sets are more complete. You can preview all plan sheets here, so there is no guesswork about what is included.

Ready to Build Smarter With an ADU?

Our ADU house plans offer unbeatable flexibility and affordability. Whether you are adding an income-producing rental, designing a backyard guest home, creating an in-law suite, or planning a compact private retreat, you get engineered drawings, editable CAD files, printable PDFs, and the freedom to build on your terms.

Explore ADU House Plans Need Custom Modifications?

Frequently Asked Questions About ADU House Plans

What does ADU stand for?

ADU stands for Accessory Dwelling Unit. It is a smaller, self-contained home that shares a property with a main residence.

Can I build multiple ADUs from one plan?

Yes. Our ADU house plans include an unlimited-build license, which gives builders, investors, and property owners more flexibility for repeat projects.

Are ADU house plans legal in my area?

ADU legality depends on local zoning rules, setbacks, parking requirements, utility access, and permitting standards. The plans can be modified to help meet many local requirements, but you should confirm rules with your local building department before construction.

Do your ADU plans include engineering?

Yes. Every ADU house plan includes structural engineering along with CAD files, printable PDFs, and an unlimited-build license.

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

Yes. Foundation changes are included, and affordable layout modifications are available for room adjustments, exterior changes, roof updates, or site-specific needs.

ADU Design Tip

Before choosing an ADU plan, check your local rules for maximum square footage, height limits, setbacks, parking, utilities, fire separation, entrance placement, and whether detached or attached ADUs are allowed on your property.