Smart 1 Bedroom ADU Plans for Guest Houses and Rentals
As housing demand increases and property prices continue to rise, many homeowners are looking for practical ways to add living space without purchasing additional land. One of the most effective solutions is building an Accessory Dwelling Unit (ADU) in the backyard.
Among the most popular layouts are 1 bedroom ADU plans, which offer more privacy and comfort than studio ADUs while still maintaining a compact and efficient footprint. These small secondary homes are ideal for rental units, guest houses, or housing for family members.
Modern modular construction has also made building ADUs easier and faster than ever. Companies such as Prefahb.co provide modular housing models that can function effectively as backyard ADUs while offering flexible design options.
In this guide, we explore common layouts for one-bedroom ADUs, their benefits, and examples of compact modular designs that work well for backyard living.
What Is a 1 Bedroom ADU?
A 1 bedroom ADU is a small secondary residential unit that includes a separate bedroom in addition to the main living space. Unlike studio ADUs where the sleeping area shares the same space as the living room, one-bedroom layouts provide greater privacy and functional zoning.
These units typically range between 300 and 600 square feet, depending on local zoning regulations and design choices.
Most 1 bedroom ADU plans include:
a private bedroom
a living room or lounge area
a kitchenette or small kitchen
a full bathroom
Because of their compact size, careful planning is required to ensure the space remains comfortable and efficient.
If you want to explore the full range of accessory dwelling unit layouts, you can start with our complete guide to ADU plans, which explains the different types of backyard housing options.
Benefits of 1 Bedroom ADU Plans
One-bedroom ADUs offer several advantages compared with studio units.
More Privacy
A separate bedroom allows residents to maintain privacy between sleeping and living areas. This makes the space more comfortable for long-term living.
Comfortable Living Space
The additional room separation helps create a more traditional home layout, which many tenants prefer.
Better Rental Potential
Many renters prefer one-bedroom units over studio apartments, which can increase the attractiveness of an ADU rental property.
Flexible Use
One-bedroom ADUs can serve many purposes, including:
long-term rental units
guest houses
housing for family members
backyard vacation rentals
Because of their versatility, this layout has become one of the most common choices for backyard housing.
Typical Layouts for 1 Bedroom ADU Plans
Different layout styles can be used when designing a one-bedroom ADU.
Linear Layout
In this configuration, the rooms are arranged along a single corridor or axis. The living room is usually located near the entrance, followed by the kitchen and bedroom.
This layout works well for narrow backyard spaces.
L-Shaped Layout
An L-shaped configuration separates the bedroom from the main living area, creating greater privacy between spaces.
This design can also allow for more natural light through multiple exterior walls.
Open Living Layout
Some ADU plans emphasize a larger living room area while keeping the bedroom more compact. This approach works well for homeowners who prioritize shared living space.
Example 1 Bedroom ADU: Model P201
Prefahb.co proudly introduces "Model P201," our innovative high cube shipping container dwelling designed for convenience and style, with prices starting at $59,950 USD. Available in single 20' or 40' configurations, this adaptable micro-home provides a living space ranging from 180 to 360 square feet. The Model P201 comes equipped with a side-wall bump-out that includes essential features like a comfortable Murphy bed, a functional desk area, a compact kitchenette, and a complete bathroom with a shower. To enhance the living experience, buyers can opt for optional packages such as "The Green Package," including a Green/Garden Roof and Circular Staircase for rooftop access, and "The Nomadic Package," featuring an Outdoor Fireplace, covered deck, and a solar panel system. With RV 220 plug-in capability and water hookups, this unit caters to individuals pursuing a nomadic lifestyle, offering a mobile and off-grid housing solution from Prefahb.co.
The "Model P" units are ideal for compact backyard offices or guest rooms. These units feature a Murphy Bed nook space, providing additional sleeping space, and a fold-down desk for flexible office use. They also come equipped with a full bath with a shower, along with a kitchenette for light cooking needs.
Begin your "Model P" purchase with a fully refundable deposit. Following the "site evaluation," we'll collaborate to decide whether to move forward with the order. Should the order be canceled after the "site evaluation," we will ensure your reservation deposit is promptly returned.
FEATURES & OPTIONS
Clients have the option to upgrade the base model of the Model P, which starts at $59,950 USD, by selecting from The Nomadic and The Green Packages. The Nomadic Packages offer a 220 RV plug-in, Roof Solar System, and an outdoor Wood Burning Fire stove, while The Green Packages feature a Spiral Roof-Top Stairway and a Green Garden Roof Top System. Clients can tailor these packages to match their individual needs effectively.
The exterior consists of a single 20' to 40' insulated shipping container wrapped in wood cladding.
Flexible and customizable interior upgrade packages are offered for customization.
Enhancement packages designed for compact building site offices and living spaces are available.
Pricing:
Our team is dedicated to providing competitive, itemized quotes based on the estimates from your order. Once we receive your online refundable reservation deposit, we can collaborate with you to create an accurate itemized price quote that fits your budget, utilizing information from a site installation assessment evaluation. If our price quote doesn't align with your budget, we will promptly refund your deposit. Moreover, if the deposit is approved, it can also be credited towards your Model and/or accessory purchase. Kindly note that shipping times and costs are subject to change.
The Process:
Upon receiving your refundable deposit, the Prefahb.com team will engage with you to discuss your order. We will carefully assess your site evaluation as per the chosen Model and determine the subsequent steps. It's important to note that site evaluations are customized for each unique building site. Once this assessment is finalized and precise estimates for site building installation, shipping, and model upgrade packages are determined, they will be integrated into an itemized quote. Upon confirmation of the itemized quote, a 50% nonrefundable deposit is required to initiate the construction of your model. As the model is readied for shipping to the building site, the remaining 40% balance will be due. Upon receipt of delivery, the final 10% balance is immediately
One example of a compact one-bedroom ADU layout is the Model P201 from Prefahb.co.
This modular container-based design offers a functional layout within a compact footprint. The unit includes:
a dedicated sleeping area with Murphy bed
a fold-down desk workspace
kitchenette for light cooking
full bathroom with shower
Because of its efficient design, this model works well as a backyard ADU, guest house, or rental unit.
Expanded 1 Bedroom ADU: Model P202
Prefahb.co proudly introduces the new 2026 "Model P202," our innovative prefahbricated luxury dwelling thoughtfully designed for both convenience and contemporary style, with prices starting at $109,950 USD. Built from two 20' units and offered in a variety of customizable configurations, this adaptable micro-home provides a comfortable living space beginning at approximately 360 square feet. The Model P202 arrives well-appointed with essential features, including a space-saving Murphy bed, a practical desk area, a compact yet efficient kitchenette, and a full bathroom complete with a luxurious rain shower. To further enhance the living experience, buyers may select optional upgrade packages such as "The Green Package," which adds a second-story walkout eco-composite deck and a modern steel staircase for easy upper-level access, or "The Nomadic Package," which includes an outdoor fireplace, a cantilevered covered deck, and an integrated solar panel system. With RV 220 plug-in capability and standard water hookups, this unit is perfectly suited for individuals embracing a nomadic or modern off-grid lifestyle, offering a mobile, sustainable housing solution from Prefahb.co.
The "Model P202" units are ideal for compact backyard ADU’s, guest rooms, or modern luxuries resort cabins. These units include a Master Suite King Bed area, offering extra comfortable sleeping space, and a fold-down desk for flexible office or study use. Each unit is equipped with a full bath featuring a rain shower and a kitchenette suitable for light cooking and meal prep. For an elevated luxury experience, pair the unit with an additional Prefahb outdoor Swim Spa.
Begin your "Model P202" purchase with a fully refundable deposit to reserve your unit. After the initial "site evaluation," we will work together to decide whether to proceed with the order. If you choose to cancel the order following the "site evaluation," we will promptly return your reservation deposit in full.
FEATURES & OPTIONS
Clients can upgrade the base Model P202, which starts at $109,950 USD, by choosing either The Nomadic or The Green package. The Nomadic package includes a 220V RV plug, a roof solar system, and an outdoor wood-burning fire stove, while The Green package adds a modern stairway and an eco-composite second-floor deck. Each package can be customized so clients can adapt features to suit their individual needs and lifestyle.
The exterior consists of two 20' insulated units, thoughtfully joined to create a durable and weather-resistant shell.
Flexible and customizable interior upgrade packages are available to tailor your space to personal preferences.
Enhancement packages specifically designed for compact building sites and small living spaces are available.
Pricing:
Our team is dedicated to providing competitive, itemized quotes based on the estimates from your order. Once we receive your online refundable reservation deposit, we can collaborate with you to create an accurate itemized price quote that fits your budget, utilizing information from a site installation assessment evaluation. If our price quote doesn't align with your budget, we will promptly refund your deposit. Moreover, if the deposit is approved, it can also be credited towards your Model and/or accessory purchase. Kindly note that shipping times and costs are subject to change.
The Process:
Upon receiving your refundable deposit, the Prefahb.co team will engage with you to discuss your order. We will carefully assess your site evaluation as per the chosen Model and determine the subsequent steps. It's important to note that site evaluations are customized for each unique building site. Once this assessment is finalized and precise estimates for site building installation, shipping, and model upgrade packages are determined, they will be integrated into an itemized quote. Upon confirmation of the itemized quote, a 50% nonrefundable deposit is required to initiate the construction of your model. As the model is readied for shipping to the building site, the remaining 40% balance will be due. Upon receipt of delivery, the final 10% balance is immediately
For homeowners who want slightly more interior space, a two-module ADU can provide additional comfort.
The Model P202 is built using two container modules, creating approximately 360 square feet of living space.
Key features include:
sleeping area
workspace desk
kitchenette
full bathroom with rain shower
This expanded layout offers a better separation between spaces while still maintaining a compact backyard footprint.
Interior Design Ideas for 1 Bedroom ADUs
Interior design plays an important role in making small ADUs feel comfortable and spacious.
Some effective design strategies include:
open living room layouts
multifunctional furniture
built-in storage solutions
compact kitchen appliances
large windows for natural light
These strategies are commonly used in modular homes inside design approaches, where space efficiency is a key priority.
Cost Considerations for 1 Bedroom ADUs
The cost of building a one-bedroom ADU can vary depending on several factors.
Important cost considerations include:
size of the unit
construction method
interior finishes
plumbing and utilities
site preparation
Prefabricated modular construction often helps reduce construction time and improve cost predictability.
To learn more about budgeting factors, you can explore our guide on modular home cost.
Prefab 1 Bedroom ADUs vs Traditional Construction
Homeowners today often choose prefabricated ADUs instead of traditional construction.
Advantages of Prefabricated ADUs
faster installation
consistent factory-built quality
predictable project timelines
reduced on-site labor
Challenges of Traditional Construction
longer construction schedules
more complex coordination between contractors
higher risk of cost overruns
Because of these benefits, modular ADUs have become a popular option for backyard housing.
How to Choose the Right 1 Bedroom ADU Plan
When selecting an ADU plan, homeowners should consider several important factors.
These include:
the size of the available backyard space
privacy between the ADU and the main home
the intended use of the unit
long-term rental potential
local building regulations
Choosing the right layout ensures that the ADU remains comfortable and functional over time.
Why 1 Bedroom ADUs Are Ideal for Backyard Homes
One-bedroom ADUs offer an excellent balance between compact size and comfortable living space.
Their advantages include:
efficient use of backyard land
flexible housing options
attractive rental opportunities
relatively simple construction
For many homeowners, these benefits make one-bedroom ADUs one of the most practical types of backyard housing.
Frequently Asked Questions About 1 Bedroom ADU Plans
What size is a typical one-bedroom ADU?
Most one-bedroom ADUs range between 300 and 600 square feet.
Can a 1 bedroom ADU include a full kitchen?
Yes. Many ADU layouts include compact kitchens with full appliances.
Are one-bedroom ADUs good for rentals?
Yes. They are often more attractive to renters than studio units.
Do ADUs require permits?
Most cities require building permits and inspections for ADU construction.
Can prefab ADUs be installed quickly?
Yes. Prefabricated modular ADUs can often be installed faster than traditional builds.