Accessory Dwelling Units (ADUs) are becoming more and more popular nowadays, especially as local laws are changing allowing homeowners more options. But what is the legal definition of accessory dwelling units?
Accessory Dwelling Unit Meaning
As people search for accessory dwelling units to buy or build, it is important to define the term. According to the American Planning Association, an Accessory Dwelling Unit (ADU) is a small residential dwelling located on the same lot as the primary residence (single-family home).
What is called an ADU? In general, ADU is also known as a granny flat, guest house, additional dwelling unit, rental apartment, mother-in-law suite, granny cottage, secondary dwelling, additional dwelling unit, home office, backyard cabin, or carriage house.
As you plan to build or order a prefab ADU for your mother-in-law or aging parents, browse our collection of popular options and suitable floor plans for accessory dwelling units.
1. Whimsical Tiny Cottage Plan Perfect for ADU
Get Whimsical Cottage Plan by AD HERE
Important to realize, that accessory dwelling units come in different styles! You will find the perfect addition to your property in the iconic cottage-style Accessory Dwelling Unit (ADU). Inspired by fairy tales, this charming space is ideal for hosting your in-laws or elderly parents. In fact, with grandparents nearby, you won’t need a babysitter – they can snuggle up by the cozy fireplace and read stories to the kids.
This whimsical cottage can work as a stand-alone ADU on any property (check your zoning laws). Furthermore, it can be a rental apartment, a guest house, or a weekend escape.
As a result, create a comfortable living space with this compact yet functional design for a 300 sq. ft. tiny cottage. The heart of the home boasts a cozy living area complete with a corner fireplace, perfect for winding down after a long day.
To the left, you will find a well-equipped kitchenette with ample storage space. Plus, enjoy the convenience of a bathroom, storage closet, and even a charming porch.
2. Charming 1 Bed Cottage
Get a 544 sqft Charming Cottage Plan HERE
If you need some more space to make your mother-in-law’s cottage even more comfortable, take a look at a similar floor plan boasting 544 square feet on a single level. At the same time, with stone and stucco architectural details, the cottage is reminiscent of charming European rustic homes.
Additionally, in this larger plan, you’ll have a separate private bedroom and a spacious bath. Surprisingly, there is even a linen closet with a stacked washer/dryer. Besides, with lots of nooks and crannies in this cottage, there is even space for a coat closet and pantry.
3. A Modern Single Level Accessory Dwelling Unit
Get an 832 SQFT Modern ADU Plan HERE
In contrast to an idyllic cottage, check out the ultra-modern clean lines of this accessory dwelling unit. Its straightforward design boasts 832 square feet of living space with an optional sleeping loft.
Not only does it have 14-foot high ceilings in the living, kitchen, and dining area, but also has large glass windows to let in plenty of natural light. These important features make small spaces look larger. A convenient sliding door leads to a wrap-around deck to connect indoor and outdoor spaces.
With a separate bathroom, laundry, and storage located in a foyer, there is everything you’d need to feel comfortable in this 800 sq. ft. single-level home. In summary, it makes a perfect home plan for retirees without sacrificing any comforts of life.
4. 2 Bedroom 900 sqft Single-Level Cottage
Get a 900 sqft Cottage Plan HERE
This single-level cottage presents a perfect solution if you need a rental ADU or a granny cottage on your property. Your parents can enjoy their golden years and age in place in this perfect floor plan for retirees.
An open-concept living area has 12′ ceilings, a cozy fireplace, and an island with seating. The person who loves gardening will appreciate a separate entrance through the mud room and a cozy porch to enjoy fresh air in a rocking chair.
Whether you need a rental ADU on your property for extra income or a comfortable place for aging parents, this floor plan with 2 bedrooms provides plenty of flexibility and options.
5. 2 Bedroom Accessory Dwelling Unit (ADU) plan
Get a Modern Cottage 800 sqft plan HERE
Looking for modern plans for accessory dwelling units on your property? In fact, this mid-century modern floor plan with clean lines and a shed-style roof can be an answer.
While the 800 sq. ft. plan is equally divided into 2 parts, it creates an open living/dining area and two bedrooms each with access to a separate full bath. Additionally, there is plenty of space to enjoy outdoors and entertain with a covered and open patio.
6. 1 Bedroom Accessory Dwelling Unit
GET 1 BEDROOM MODERN ADU PLAN HERE
If you are looking for an ADU floor plan to accommodate a narrow lot, take a look at the spacious design of this dwelling. The versatile features of the plan offer endless possibilities for hosting guests, an additional income, or multi-generational living arrangements.
This modern solution gives a comfortable bedroom (with a closet, laundry, and bath) and an open-concept main area. On the negative side, the patio looks too small, according to the plan, but you can always request some modifications.
7. 952 sq. ft. Modern ADU with Garage (or Shop)
GET A RUSTIC COUNTRY 952 SQFT FLOOR PLAN HERE
Check out this rustic country house plan as a possible solution for a spacious ADU or house for retirees. With a little under 1000 sq.ft., 2 bedrooms, 2 porches, and even a 2-car garage, there is plenty of space for living and hobbies.
If you enjoy the popular barnhouse-style for your country home, this plan is for you. As an illustration, a dark color scheme, wooden beams, and a metal roof complete the look for this simple yet appealing architectural style.
8. Small Cottage ADU (800 sq. ft.)
GET 884 SQFT COTTAGE PLAN HERE
In general, you would want the style of an accessory dwelling unit to match the architectural style of your main house. For this reason, it is important to feature different sizes and styles of plans so you can pick the ADU that fits your needs.
With this plan, you can build a perfect mother-in-law cottage that any retiree would appreciate. With a vaulted living/kitchen area and 2 spacious 10′ x 11′ bedrooms, anyone can enjoy life in style. Furthermore, relax on your covered porch, even when it is raining.
9. Granny Flat (Accessory Dwelling Unit)
This simple yet spacious floor plan gives you plenty of options for a comfortable ADU, backyard rental, downsizing, or a small vacation home.
Notably, with an open-concept living area and two bedrooms with separate bathrooms, there is enough room for a couple of retirees or a small family. Also, 2 sets of French doors connect the living area with an open patio and let in plenty of natural light.
10. 675 sq. ft. Modern Accessory Dwelling Unit
GET 675 SQ.FT. MODERN ADU PLAN HERE
Step inside this modern accessory dwelling unit to appreciate how well-designed this compact space is. Firstly, you are greeted by an entry area with a coat closet and a comfortable bench.
Next, step into an open living room with a sloped high ceiling with lots of natural light. Lastly, a private bedroom is designed for relaxation with a separate laundry area and a walk-in closet to keep your stuff well-organized.
11. Lake House ADU
GET THE LAKE HOUSE ADU PLAN HERE
Enjoy the comforts and flexibility of this compact cottage plan which is perfect as an ADU or a vacation lake house. With the shed-style roof, there is enough room for an additional set of windows above the sliding doors to enjoy the views.
If you are working from home, there is a comfortable and stylish home office. Furthermore, you may want to enlarge the deck for the enjoyment of outdoor grilling and entertainment.
12. DIY Backyard ADU – 430 sq. ft.
GET RYLEE FLOOR PLAN BY PINUPHOUSES
If you are concerned about construction costs for your granny pod accessory dwelling unit, take a look at an affordable floor plan ‘Rylee’ by PinUp Houses with a DIY option. Of course, you need to have some construction experience to complete the project from start to finish.
Most importantly, it comes with a complete set of construction plans, a step-by-step guide, and a full list of materials and supplies. Furthermore, you can ask an architect for small modifications. As a result, you can have a simple backyard ADU for a modest DIY building cost of $20,500* (*an estimate based on the cost of materials at the time of writing).
13. Single-Level DIY Granny Pod ‘Lucas’
This portable single-level granny pod is an example of another affordable DIY project if you decide to build an ADU yourself. With a straightforward floor plan and an option for solar panels, it is the epitome of eco-friendly independent living.
As a result, you can build a 10′ x 40′ backyard ADU for your aging parents for a modest DIY Building Cost of $31,400* (*an estimate based on the cost of materials at the time of writing). Also, add a 7-foot cozy deck for relaxation and enjoyment.
14. Eco-Friendly One-Story ADU
Eco-friendly plan Noah boasts 792 sq. ft. in this 41′-10″ x 18′-11″ dwelling which is reminiscent of famous earthships. Designed with energy efficiency in mind, it can be easily transformed into an off-grid ADU equipped with solar panels.
After reviewing the ADU floorplans, let’s analyze the PROS & CONS of building one on your property. If you are considering building an accessory dwelling unit, it is important to understand every detail of such an endeavor.
14. Prefab ADUs by Abodu
If you don’t want to deal with the construction process, there is an innovative approach to backyard ADUs offered by Abodu located in Redwood City, CA. They offer several models of prefab ADUs and the whole process, from ordering to delivery, takes about 6 months.
What is great about Abodu, is their design process and straightforward approach to pricing. As a result, you can pick your model, choose from available exterior and interior finishes, and decide if you need any extra upgrades. In the end, you will see the price of your model with all the upgrades.
Currently, Abodu offers 5 models:
- Abodu Studio – 340 sqft, base price $228,800
- Abodu One – 500 sqft, base price $268,800
- Abodu Two – 610 sqft, base price $312,800
- Abodu Two+ – 800 sqft, base price $392,800
- Dwell House – 540 sqft, base price $439,000
PROS & CONS of Accessory Dwelling Units (ADUs)
As the popularity of ADUs is steadily rising, homeowners are advised to do their homework before they decide to create an ADU in their backyard. In brief, here are the PROS & CONS of accessory dwelling units to consider, according to realtor.com:
Pros of Accessory Dwelling Units:
- Additional usable space
- Affordability
- Passive Income
- Increased property value
- Flexibility
Cons of Accessory Dwelling Units
- Space limitations
- Building and zoning regulations
- Cost of permits
- Privacy concerns
- Increased property taxes
- Complications of being a landlord and managing renters
- Maintenance and utilities cost
- Limited resale options
Find more information about the pros and cons of granny pods & ADUs here:
Creating a Perfect ADU
As you review your options for building an ADU, let’s analyze the main features of these floor plans.
Usually, Accessory Dwelling Units are called granny flats, guest houses, additional dwelling units, rental apartments, mother-in-law suites, granny cottages, or secondary dwellings.
So, if you are planning to build a granny flat or empty-nesters dwelling, make sure they are thoughtfully designed with retirees in mind.
In fact, children are grown and the elderly are looking for a low-maintenance compact place to relax and enjoy life. But downsizing doesn’t mean downgrading the quality of life.
More info: Coolest Granny Pods and Tiny Modular Homes for Sale
What Empty-Nesters Look for in a Home
Looking for a stylish and efficient home for your golden years? Usually, the empty nester house plans are designed with seniors in mind.
These empty-nester designs come in a variety of architectural styles and offer all the features you need to make your retirement dreams a reality. Let us help you find the perfect home plan to plant your roots in.
According to real estate agents, empty-nesters are mostly looking for:
- less square footage;
- single-floor living;
- safety;
- luxurious high-quality finishes;
- high-quality appliances;
- low maintenance;
- low property taxes;
- proximity to services and relatives;
- home office/craft room space.
Also known as retirement floor plans, these homes offer a simple and hassle-free living environment. With enough space for a couple or individual, as well as occasional guests, they can enjoy retirement without the burden of a larger house and its expenses.
Simplify and Enjoy Life with ADU House Plans
One-story and single-level floor plans are in demand for seniors. Accessibility for every member of the family with a variety of abilities is a must.
Consequently, the focus is on wheelchair-friendly plans with no steps or stairs. As illustrated above, there are numerous design options for retirement house plans suitable for both seniors and young families with small children.
Understanding Aging in Place
While understanding the concept of aging in place is essential, incorporating universal design principles is equally important to ensure that your home can meet your evolving needs as you age.
What are the main features of Aging-in Place home plans?
- open floor plan
- single-level design
- wheelchair access, including bathroom and shower
- pull-out shelves
- smart home features
- remote controlled lights & blinds
- safety
Incorporating Universal Design Principles
Incorporating universal design principles means creating a living space that is not only beautiful but also functional and accessible for people of all ages and abilities. These design principles focus on making your home easy to navigate, minimizing clutter, and ensuring that essential features are within reach.
By incorporating universal design principles into your ADU home, you can create a space that will seamlessly adapt to your changing needs over time. This flexibility is especially important as you navigate the transition into retirement and beyond.
Creating a home with universal design principles sets the foundation for simple single-level floor plans, which can further enhance the accessibility and flow of your living space.
Flexibility of Single-Level Home Plans
Creating a home with universal design principles sets the foundation for simple single-level floor plans, which can further enhance the accessibility and flow of your living space. Above all, these floor plans offer seamless navigation without the need for stairs, minimizing potential hazards.
By opting for a single-level layout, you can future-proof your home and ensure that it remains functional and comfortable as you age.
Future-Proofing Your ADU
When future-proofing your home, it’s important to consider not just the layout, but also the various features and amenities that can enhance your quality of life as you age. From installing grab bars in the bathroom to lowering countertops in the kitchen, these simple adjustments can make a big difference in ensuring your home remains safe and accessible for years to come. By incorporating these thoughtful details now, you can set the stage for creating functional living spaces that cater to your evolving needs.
Creating Functional Living Spaces
When planning for retirement living, it’s essential to design functional living spaces that can accommodate your changing needs over time. By considering elements such as ease of movement, storage solutions, and adaptability, you can create a home that not only meets your current requirements but also allows for future adjustments. This thoughtful approach to space design sets the foundation for maximizing safety and accessibility as you age.
Maximizing Safety and Accessibility
To maximize safety and accessibility in your home as you age, there are key design considerations to keep in mind. Start by ensuring that pathways are wide enough for easy navigation with mobility aids, such as walkers or wheelchairs.
Furthermore, installing grab bars in bathrooms and near staircases can provide additional support and prevent falls. Moreover, consider replacing traditional doorknobs with lever-style handles for easier use, and opt for slip-resistant flooring to reduce the risk of accidents.
Additionally, proper lighting throughout the home is crucial for visibility and safety as eyesight may deteriorate over time. As a result, you can create a living environment that promotes independence and peace of mind.
This thoughtful approach to designing a safe and accessible home sets the stage for embracing technology to further enhance your ability to age in place.
Source: Modular Cottages for Aging in Place
Embracing Technology for Aging in Place
In today’s digital age, there are endless possibilities for integrating technology into your home to make aging in place even more convenient and secure. Of course, smart home devices like voice-activated assistants, motion-sensor lights, and smart thermostats can help you manage daily tasks with ease and efficiency.
Remote monitoring systems can provide peace of mind to both you and your loved ones by allowing for real-time health and safety alerts. Wearable technology, such as smartwatches with fall detection features, can provide an added layer of security in case of emergencies.
Embracing these technological advancements can not only streamline your daily routine but also help you maintain your independence for longer.
By incorporating technology into your aging-in-place plan, you can stay connected, informed, and safe in the comfort of your own home. As you continue to make intentional design choices and integrate innovative solutions, you can create a living space that not only grows old with you but also supports your evolving needs and desires.
Creating a Perfect Accessory Dwelling Unit
Firstly, in creating a home that grows old with you, it’s crucial to consider the principles of aging in place, universal design, future-proofing, functional living spaces, safety, accessibility, and smart home technology. As a result, you can ensure a comfortable and secure living environment.
So, start planning your accessory dwelling today and take the first step towards a fulfilling future. As the demand for accessory dwelling units continues to grow, homeowners and DIY builders have a unique opportunity to find answers to this growing market. As a result, you will be building a foundation for a strong financial future.
