1-bedroom ADU floor plans

Accessory dwelling units (ADUs) are a smart way to add living space and increase your home’s value. Choosing between 1- or 2-bedroom designs depends on your construction budget, lot size, and intended use. If a larger unit isn’t an option, a 1-bedroom ADU is an excellent choice for a rental, granny flat, guest house, workspace, or private retreat.

3D renderings and floor plans of a studio ADU showcasing various layout options, highlighting efficient use of space and modern design elements for a functional and stylish living environment.

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360 sq. ft. - 1200 sq. ft.

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Maximize Your Space

1 bedroom ADU floor plan sizes

1-bedroom ADUs are versatile, functional, and efficient. Their size, design, and customization options make them an excellent choice for maximizing your property’s value and functionality while aligning with your lifestyle.

1-bedroom ADUs range from compact layouts to California’s 1200 sq. ft. max (or 1000 sq. ft. in some San Diego areas). Your lot size and how you’ll use the ADU—full-time housing or a guest space—will guide your choice.

Smaller ADUs can feel spacious with smart layouts. Open designs, multi-functional spaces, and clever storage make every square foot count.

Design your ADU around your needs. Bigger bedrooms, functional kitchens, or in-unit laundry—focus on what adds value and comfort to your space.

A 1-bedroom ADU gives more privacy than a studio. Thoughtful designs—like fencing, landscaping, and smart window placement—keep it comfortable for everyone.

Your lot’s size and shape are key to your ADU design. Maximize space while meeting setback rules, like California’s 4-foot requirement. Position the unit for privacy and natural light.

Finding the right balance between cost and functionality is key. Focus your budget on essentials like a comfortable bedroom and efficient kitchen, and consider cost-effective upgrades that make a big impact, like durable materials or energy-efficient fixtures.

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1 Bedroom ADU Plans

Why choose a one-bedroom ADU floor plan?

A 1-bedroom ADU strikes the perfect balance of privacy, functionality, and added value, making it an excellent upgrade over a studio apartment. With separate living and sleeping areas, it provides more comfort, flexibility, and income potential—all while staying budget-friendly.

Better in-law suite

Loved ones get privacy & comfort while staying close.

Boost rental income

Higher rents & better returns.

Launchpad for adult kids

Ideal for grown kids gaining independence.

Private retreat

A detached ADU offers a quiet space for work or relaxation.

Adds property value

Increase your home’s worth and appeal.

Smart investment

A versatile unit that strengthens your portfolio.

OUR PHILOSOPHY

Custom vs. pre-approved plans

Built around your needs

Custom plans for 1-bedroom ADUs let you design the perfect space. Want a larger bedroom, a full kitchen, or smart storage? Customize your layout to fit your lifestyle and make every square foot count.

Long-term value

While pre-approved plans are quicker and more affordable upfront, custom designs can increase your property value and deliver better functionality—especially for compact 1-bedroom layouts where thoughtful design matters most.

Lot-friendly and compliant

Custom plans are tailored to your lot’s unique dimensions and comply with local zoning rules, including California’s 4-foot setback requirements. This ensures a smooth permitting process and a layout that fits seamlessly on your property.

What’s the ROI for
1-bedroom ADUs?

Our calculator offers a clear look at what your return on investment will be for your 1-bedroom ADU project.

$ Maximum value ranges from 1$ to 1000000$
$ Maximum value ranges from 1$ to 1000000$
Total Return on Your ADU Investment

1,739%

Compare to other investments:

Real Estate

Avg. 6-8%

Stocks

Avg. 5-7%

Savings Account

Avg. 2-4%

Elevate your one bedroom ADU

Customize your 1-bedroom ADU with stylish finishes and smart upgrades. From efficient storage to luxury features, create a space that fits your lifestyle perfectly.

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Outdoor entertainment

Create the perfect outdoor entertainment space for your 1-bedroom ADU.

Vaulted ceilings

Add height and elegance to your ADU with vaulted ceilings, creating an open, airy feel even in compact spaces.

Exposed beam

Bring character to your ADU with exposed beams. They add rustic charm and a sense of craftsmanship to your space.

Built-in storage

Include built-in features like wine racks or pantry storage for a touch of luxury and practicality in your ADU.

Bi-fold doors

Use bi-fold doors to seamlessly connect your 1-bedroom ADU to outdoor spaces, perfect for entertaining or relaxation.

Smart home

Add smart lighting, thermostats, and security systems to make your ADU energy-efficient and easy to manage.

Towel warmer

Enhance your bathroom with features like towel warmers or upgraded fixtures for added comfort and style.

ADA-compliant design

Create a space that works for everyone by incorporating ADA-compliant features like wide doorways and accessible showers.

Pot filler

Add a pot filler, pull-out pantry, or custom cabinetry to make your 1-bedroom ADU kitchen both efficient and elegant.

Roof top

Add a rooftop patio to your one bedroom ADU for relaxation, entertaining, or taking in the views—perfect for smaller lots.

Fire place

Make your 1-bedroom ADU a warm and inviting space with a fireplace that adds charm and comfort year-round.

Common layouts for 1-bedroom ADUs

1-bedroom ADUs are versatile and efficient designs that work for small lots, rental spaces, or private retreats. Below are some popular layouts that can suit a variety of lot sizes and lifestyles.

For homeowners with larger lots, a 1000-square-foot ADU layout feels like a true home. It features a spacious bedroom with room for a sitting area, a full-sized kitchen, a large living room, and even a separate office nook. This is perfect for those looking to create a luxurious private retreat.

This compact 400-square-foot layout is ideal for smaller lots or those seeking minimalistic living. It features an open-concept living area with a combined kitchen and dining space, a cozy bedroom, and a full bathroom. Smart storage solutions like built-in shelves and multifunctional furniture can make the most of the space.

Measuring just 440 square feet, this one bedroom ADU floor plan balances privacy and functionality. The bedroom offers space for a queen bed and built-in closet, while the open kitchen and living area flow seamlessly together. This design works well for guest houses or short-term rentals.

A 500-square-foot design offers a slightly larger layout, making room for additional amenities like a small dining nook or in-unit laundry. The kitchen provides ample counter space, and the bedroom includes a built-in wardrobe for storage.

With a more spacious feel, this ADU provides a 623-square-foot one-bed, one-bath layout that is perfect for full-time living. It includes a larger kitchen with space for full-sized appliances, a generous bedroom, and a private patio for outdoor living.

A 750-square-foot plan is ideal for those who want more comfort and flexibility. It includes room for a dedicated dining area, a walk-in closet in the bedroom, and plenty of living space. This layout is often chosen for long-term rentals or multigenerational living.

1 bedroom ADU Design

Tips from our designer

Use open floor plans, high ceilings, and compact kitchens.
Your ADU’s size depends on your lot and local zoning laws.
Create separation with fencing, landscaping.
Large windows, skylights, and glass doors bring in sunlight.

Top FAQs for 1-bedroom ADUs

Answers to your most common 1-bedroom ADU building questions.

1-bedroom ADUs are designed for efficiency and comfort. Key features include a private bedroom, an open living area, a fully equipped kitchen, and a bathroom. Many designs also include outdoor spaces like patios or decks to enhance indoor-outdoor living.

Use smart design strategies like open floor plans, multifunctional furniture, and built-in storage to make the most of compact spaces. Features like large windows and light color schemes can also create a sense of openness.

Popular layouts range from compact designs under 500 sq. ft. to spacious options up to 1000 sq. ft. Options include square layouts, L-shaped plans, or even ADUs built above garages. Each layout can be customized to fit your property and needs.

Yes, 1-bedroom ADUs are versatile. They’re ideal as rental units, offering a private bedroom and functional layout that attracts tenants. They’re also great for housing family members, providing independence and comfort within proximity.

1-bedroom ADUs can range from 400 sq. ft. for compact designs to 1000 sq. ft. for more spacious living. California regulations allow detached ADUs up to 1200 sq. ft. in some areas, with local limits varying.

Think about how you’ll use the space—full-time living, rentals, or guest housing. Consider features like in-unit laundry, a larger kitchen, or outdoor access. Always check local zoning regulations for size limits and setbacks.

1-bedroom ADU floor plans are perfect for maximizing small spaces while providing privacy and functionality. Sizes range from compact 400 sq. ft. layouts to spacious 1000 sq. ft. designs, with options for garage conversions, narrow lots, and even ADUs above garages.

While 1-bedroom ADUs are ideal for small families or rental units, 2-bedroom and 3-bedroom ADUs offer more space for multigenerational living. Studio ADUs are great for minimalists, and 2-story ADUs are perfect for smaller lots needing vertical space.

Absolutely! Custom ADU plans can optimize small or narrow lots, incorporate features like in-unit laundry or patios, or convert garages into living spaces. Whether you need a compact 500 sq. ft. plan or a 1200 sq. ft. layout, we can help you design the perfect fit.

Bring your ADU to life

We make designing and building your 1-bedroom ADU easy by managing every step, ensuring a smooth and stress-free process from start to finish.

1

Discovery chat

Share your vision and goals with our team. We’ll discuss your property, budget, and how you plan to use your ADU.

2

Custom design

Collaborate with our in-house designers to create a tailored floor plan that fits your needs and property layout.

3

Detailed proposal

Receive a clear proposal with timelines, costs, and next steps to bring your ADU to life.

4

Ready to build

With plans in place, we handle permits, construction, and everything else needed to complete your ADU.