This sleek accessory dwelling unit (ADU) plan delivers **832 sq ft** of heated living space, featuring **1 bedroom**, **1 full bathroom**, and an **optional sleeping loft** of about 170 sq ft. It’s designed to maximize light, views, and efficient use of space. 0
Floor Plan:
Exterior Design
The exterior is distinctly modern: clean lines, expansive glazing, and a minimal roof profile. The structure’s width is **38′-0″**, depth **34′-0″**, and the maximum roof ridge height is **15′-9″**. 1
Exterior walls are built with **2×6** framing to allow higher insulation performance. 2 The roof uses stick framing with a gentle **3:12 pitch**, helping maintain a modern low-slope aesthetic. 3 Large sliding glass doors open up to a semi-wraparound deck (≈ 394 sq ft), enhancing indoor-outdoor connection. 4
Interior Layout & Flow
You enter into the open living / dining / kitchen zone, which enjoys a vaulted slope from **8′** at the bedroom side up to **14′** in the great room. 5 This sloping ceiling establishes volume and drama without compromising efficiency.
The ADU features a split between the sleeping and living zones. The main bedroom lies on one side, with direct adjacency to the bathroom. The loft, when added, sits above part of the living zone and is intended strictly for sleeping or storage, not included in the main square footage. 6
Bedrooms & Bathrooms
The primary bedroom fits standard bedroom furniture and benefits from proximity to the full bath. It’s sized for everyday comfort rather than luxury. 7
The bathroom is laid out compactly, with efficient use of fixtures, circulation, and plumbing. With the ADU’s small footprint, wasted space is minimized. 8 The optional loft is accessed via ladder or stair and adds sleeping area without adding on footprint. 9
Living & Dining Spaces
The living room is the emotional heart. With the vaulted ceiling rising toward the exterior glazing, the space feels generous. The layout allows for flexible furnishing and clear sightlines to the kitchen and outdoors.
The dining area is adjacent to both the kitchen and living zones, making serving easy and preserving continuity of space. Its proximity to the sliding doors fosters a strong indoor-outdoor relationship.
Kitchen Features
The kitchen is compact but smart. It wraps around the dining zone and supports a workflow straight to prep and dining. Cabinets, counters, and storage are scaled to the footprint without overreach.
The openness ensures that cooking remains part of the life of the home. With visibility to the living and views beyond, the kitchen never feels secluded.
Outdoor / Deck & Access
The semi-wraparound deck (≈ 394 sq ft) is a standout feature, opening from the living/dining zone to extend usable area. It invites lounging, dining, or connection to nature. 10
Given the large glazed walls and sliding doors, the indoor-outdoor transition is seamless. This deck becomes a key component of daily life.
Storage & Utility
Closets in the bedroom and built-in storage under the loft help manage belongings. Given the ADU’s compact nature, storage is lean but carefully planned.
Plumbing is clustered (bath, kitchen) to minimize run lengths and reduce cost. Mechanical systems are tucked into efficient zones to preserve the clean interior aesthetic.
Construction & Efficiency Notes
The first-floor ceiling slope from 8′ to 14′ gives drama without excess expense. The 2×6 exterior walls provide insulation depth. 11 The low roof pitch reduces structural complexity and helps blend the modern form with compact scale. 12
Large glazing invites daylight but should be paired with high-performance glass and shading to control heat gain. The compact volume helps reduce energy load.
Estimated Building Cost
The estimated cost to build this home in the United States ranges between $110,000 – $200,000, depending on location, finishes, site conditions, and labor.
Why This Modern ADU Plan Works
This plan strikes a refined balance between modest size and generous experience. The vaulted interior, smart layout, and deck integration make it feel larger than its footprint. The optional loft gives flexibility without expanding the envelope.
For those seeking a stylish, efficient, and compact living solution—whether as a guest house, rental, or primary home—this 1-bed modern ADU delivers with elegance, clarity, and practicality.
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