900 sqft ADU floor plans

Approaching 1,000 sq ft, this layout blends spaciousness with thoughtful flow. The Sumac floor plan offers two private bedrooms—each with ample closet space—and dual full baths for added convenience. A well-organized kitchen design and open dining area allow for entertaining and daily ease. It’s a timeless setup that works for small families, guests, or income-generating rentals.

This layout stands out with its architectural appeal, featuring a vaulted ceiling and elevated loft for added function. The main level includes a large bedroom, open living area, and full bath with plenty of natural light. Use the loft for a guest room, studio, or reading nook—it’s perfect for homeowners seeking a flexible layout. Optional features like a screened porch or enhanced roofline elevate both style and usability.

Our Tamarind layout brings together two large bedrooms and two full bathrooms, giving each occupant privacy and comfort. The spacious Master Suite and secondary room are positioned for convenience, and the living-dining-kitchen flow creates a welcoming central hub. Modern roof plan considerations ensure energy efficiency and ventilation. It’s an excellent option for extended family or long-term rental use.

Designed for flexibility, this layout features two comfortable bedrooms and a den that works perfectly as a home office or creative space. A central bathroom supports both bedrooms, and the open kitchen and living areas allow for effortless daily use. There’s even space to implement custom storage solutions that add function without clutter. It’s a smart choice for families who want a little extra room to grow.

This layout combines privacy and shared living with two well-placed bedrooms and two full baths. Ideal for families or roommates, it includes space for entertaining and relaxing without compromise. Choose from our Sandalwood or Pine layouts—both offering well-lit interiors, intuitive Electrical Layout Plans, and premium finishes. With balanced room separation and open living areas, it truly feels like a full home.

A 900 sq ft ADU floor plan is a compact, efficient layout for a secondary living space that typically includes 1–3 bedrooms, 1–2 bathrooms, and an open-concept kitchen, dining, and living area. Designed to maximize comfort and functionality within a modest footprint, these plans often feature smart design elements like vaulted ceilings, built-in storage, or L-shaped layouts for outdoor space. They're ideal for small families, guests, or rental use, and can be customized to meet zoning rules and personal needs.

The most popular styles for 900 sq ft ADU floor plans focus on maximizing space, comfort, and flexibility. Common options include Modern/Contemporary with open layouts and clean finishes, Country/Farmhouse with rustic charm and porches, and L-Shaped designs that create private outdoor areas. Other favorites include Minimalist/Urban for efficiency, Traditional/Cottage for cozy appeal, and Open Concept layouts to enhance flow and natural light. Most styles prioritize functional storage, seamless transitions, and customizable features to suit different living needs.

To maximize space in a 900 sq ft floor plan, focus on open-concept layouts that eliminate unnecessary walls and improve natural light flow. Use multi-functional furniture, built-in storage, and vertical solutions like tall cabinets or lofted areas to make every inch count. Opt for L-shaped or flexible layouts to separate private and public zones efficiently. Add large windows, consistent flooring, and outdoor living areas to visually expand your space and enhance functionality.

A well-designed 900 sq ft ADU should include 1–3 bedrooms (typically 2), 1–2 bathrooms, and an open-concept kitchen, living, and dining area to maximize space and flow. Key features also include built-in storage, a compact laundry area, and ample natural light through large windows or glass doors. Efficient layouts should minimize hallways, offer a functional entry space, and connect seamlessly to outdoor living areas. Optional flex space, smart circulation, and energy-efficient design further enhance comfort and long-term value.

Zoning rules in San Diego County affect your 900 sq ft ADU’s size, placement, and layout. Setbacks (typically 4 ft from rear and side property lines), height limits (up to 16 ft by right), and a required 6 ft separation from the main home shape where and how your ADU can be built. Floor plans may also be influenced by lot coverage rules, access requirements, and parking exemptions near transit. These regulations ensure compliance, safety, and neighborhood compatibility—ultimately guiding your ADU’s footprint, style, and features.

In 2025, building a 900 sq ft tiny house typically costs between $90,000 and $225,000, or $100 to $250 per square foot. The final price depends on factors like location, materials, labor, finishes, and whether you choose a custom build or prefab option. Basic builds start around $90K, while high-end, fully customized versions can reach $225K. DIY or prefab routes may reduce costs but can limit design flexibility.

In 2025, building a 900 sq ft house typically costs between $90,000 and $225,000, or $100 to $250 per square foot. Pricing depends on location, materials, labor, and the level of customization. Basic builds may cost around $90K, while high-end designs with premium finishes can reach $225K or more. Urban locations and custom features significantly increase overall cost.

A 900 sq ft home typically includes 3 to 5 rooms, depending on the layout. Most common configurations feature 1–2 bedrooms, 1–2 bathrooms, and a combined living, dining, and kitchen area. Some plans also include a flex space like a small office or guest room. The exact number varies based on how efficiently the space is designed and whether rooms are multi-functional.