Studio to 3-Bedroom ADU Floor Plans Designed for Atlanta Lots
At CottageSmith, we believe every family deserves a space that feels like home. Our thoughtfully designed ADU floor plans combine efficiency, modern amenities, and comfort. Whether you need a space for aging parents, a home office, or a guest house, every plan here is built by CottageSmith for your lifestyle.
Arbor 240
At 240 sq ft, the Arbor 240 is one of our most compact studio ADU floor plans. Designed for efficiency, it features a cozy living space, compact kitchen, and bathroom, perfect for a minimalist lifestyle or guest space.
Arbor 257
A 257 sq ft studio with an open floor plan, this ADU includes a small kitchen, stylish bathroom, and ample natural light for a bright, comfortable space.
Arbor 284 (Garage)
This 284 sq ft studio includes an attached garage, making it perfect for urban settings; complete with a compact kitchen and cozy living area.
Arbor 300
At 300 sq ft, this studio ADU combines comfort and efficiency with a well-designed kitchen, modern bathroom, and open living space ideal for guests or short-term stays.
Arbor 384 (Loft)
This unique 384 sq ft lofted studio ADU offers extra vertical space for a versatile setup, featuring a stylish kitchen, spacious living area, and a cozy loft for flexible living.
Briarwood 436
A cozy 436 sq ft ADU perfect for comfortable living. This one-bedroom tiny home features ADU floor plans with an efficient layout, a sleek kitchen, and an inviting living area for an ideal space.
Briarwood 450
This 450 sq ft casita offers a modern kitchen, ample living space, and a private bedroom, making it an ideal choice for a stylish yet functional accessory dwelling.
Briarwood 515
At 515 sq ft, this spacious one-bedroom ADU features an open floor plan with high-end finishes, a full kitchen, and a cozy living area for a warm, welcoming home.
Briarwood 528 (Garage)
This 528 sq ft ADU includes a convenient attached garage, a well-designed kitchen, and a bright living space for a comfortable and practical setup.
Briarwood 553
With 533 sq ft, this one-bedroom layout offers plenty of room for relaxation, featuring a gourmet kitchen, spacious bathroom, and an airy living area.
Briarwood 576
With 576 sq ft, this one-bedroom layout offers plenty of room, featuring a kitchen, spacious bathroom, and living area.
Briarwood 598 (2 stories)
A unique two-story layout at 598 sq ft, this ADU provides an efficient living space downstairs with a private bedroom retreat on the upper level, combining privacy and style.
Briarwood 720
This 720 sq ft ADU offers a generous layout, including a gourmet kitchen and spacious living area, perfect for anyone looking for comfort and convenience in a compact home.
Briarwood 744
With 744 sq ft, this roomy one-bedroom ADU features an expansive open-concept layout, a chef’s kitchen, and premium finishes for luxurious, compact living.
Chastain 1000
The largest of our ADU floor plans at a spacious 1,000 sq ft. This three-bedroom ADU is ideal for families. It offers a large kitchen, open living area, and well-designed bedrooms for ultimate comfort.
Chastain 535
A compact 535 sq ft two-bedroom layout that maximizes space, featuring a modern kitchen, cozy living area, and two private bedrooms ideal for a small family or guests.
Chastain 585
This 585 sq ft ADU includes a full kitchen, spacious living area, and two well-designed bedrooms, perfect for multi-generational living or rental potential.
Chastain 650
At 650 sq ft, this two-bedroom ADU offers a smart, open layout with a stylish kitchen, two comfortable bedrooms, and a welcoming living area for a complete home feel.
Chastain 748
This 748 sq ft two-bedroom, two-bathroom ADU features a luxurious layout with a sleek kitchen, cozy living area, and ample bedroom space, making it a perfect backyard retreat.
Chastain 775
Offering 775 sq ft, this two-bedroom plan includes a roomy kitchen, a comfortable living space, and two private bedrooms, perfect for comfortable family living or extended stays.
Flexible Financing Options for Your ADU Project in GA
Found the ADU floor plans you're looking for? At CottageSmith, we make it easy to turn your vision into reality with various financing options. Whether you're looking for a Home Equity Line of Credit (HELOC), cash-out refinancing, or other flexible solutions, our financing partners are here to help.
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YOUR QUESTIONS, ANSWERED
Floor Plans FAQs
What is the smallest backyard cottage you build?
The Arbor 240: a 240-square-foot studio with a full bath and a compact kitchen. It is a reading room, an office or a guest room for one.
What is the largest?
The Morningside 1475, a three-bedroom family cottage. Most metro Atlanta jurisdictions cap detached units well below that size, so the Morningside family is for lots and cities that allow it. We’ve built plenty of custom ADU’s that exceed 2,000 square feet – an ADU, with full basement and a connected garage. We customize each plan to fit your needs – the sky is the limit with your design.
Do I have to use one of your plans?
No. About two thirds of our clients start with a plan from our portfolio of plans and customize it. About a third start from a blank page. Same team, same standard either way.
Can I customize a plan?
Yes, and almost everyone does: a moved bedroom, a bigger porch, a kitchen laid out for the way you cook, finishes to match the main house.
Can a backyard cottage have two bedrooms?
Yes. The Chastain family runs from 535 to 1,003 square feet with two and we also offer three bedroom options. Whether your lot allows it depends on the size cap in your jurisdiction.
Can a cottage have a loft?
Yes. The Arbor 462 with Loft adds a 119-square-foot sleeping loft over the living room. Lofts have ceiling-height rules that vary by county, and some jurisdictions count the loft toward the size cap; we check both.
Can a cottage be two stories?
Yes, where height limits allow. The Briarwood 598 is a two-story one-bedroom, and the Highland carriage houses put living space over the garage. Many jurisdictions cap accessory structures at a height lower than the main house; we check first.
What styles do you build?
Craftsman, farmhouse, brick traditional, contemporary and cabin, among others. The rule is that the cottage belongs to the main house; we match or complement its materials and roof pitch rather than impose a style.
