Exterior & Curb Appeal
This 1-bedroom ADU cottage house plan under 500 sq. ft. proves that compact living can still be stylish and highly functional. The design showcases a simple, clean exterior with vertical siding, a gable roofline, and a sheltered carport supported by wood posts. Its cozy aesthetic blends beautifully into suburban backyards, rural landscapes, or even as a stand-alone cottage retreat. Despite its small footprint, the exterior feels welcoming and efficient.
Porch & Carport
A standout feature of this plan is the two-car carport, measuring 20’ by 16’. This space not only provides shelter for vehicles but also doubles as an outdoor shaded area for seating or storage. Its integration into the front of the house gives the cottage an extended presence and enhances usability, particularly for homeowners who value flexibility in outdoor living.
Interior Layout
Inside, the floor plan makes clever use of every square foot. The vaulted ceiling in the living room and kitchen, measuring 9’6” by 10’3” and 7’8” by 10’3” respectively, creates an open and airy atmosphere. A dining nook is tucked beside the kitchen, making meal prep and dining efficient and intimate. The living space is compact but feels much larger thanks to its vertical height and simple open flow.
Bedroom & Bathroom
The bedroom measures 11’4” by 9’6” and includes a closet for storage, making it practical for long-term living. Adjacent to it is a bathroom with a 60” x 30” bath/shower combo, comfortably fitting into the layout without sacrificing functionality. This private retreat provides just the right balance of comfort and simplicity, ideal for singles, couples, or guests.
Storage & Functionality
Despite its size, the home includes thoughtful storage solutions. The closet in the bedroom and designated kitchen cabinetry ensure that essentials can be kept organized. The carport area can also serve as a utility or storage extension, enhancing the plan’s practicality. Every corner of this cottage has a defined purpose, minimizing wasted space.
Lifestyle & Uses
This ADU cottage works perfectly as a guest house, rental property, retirement home, or backyard office. Its under-500 sq. ft. footprint makes it cost-effective to build and easy to maintain, while still providing a comfortable lifestyle. The combination of vaulted ceilings, outdoor carport, and efficient interior layout ensures a versatile living solution that feels bigger than its actual size.
Estimated Construction Cost
Building this compact 1-bed ADU cottage in the United States is estimated to cost between $80,000 and $120,000, depending on location, materials, and finish choices. The lower end of the budget may include standard finishes and simple siding, while the higher end can cover upgrades such as energy-efficient windows, premium kitchen appliances, or enhanced exterior details. For a cost-efficient yet stylish small home, this plan strikes the perfect balance.
