Description
If you’re searching for a compact, build-ready tiny house plan that feels much larger than its square footage… this is it.
The TMS-058-CF1 is a thoughtfully engineered 21’ x 26’ small house design offering 548 sq ft of conditioned living space plus 152 sq ft of outdoor deck area, bringing total usable coverage to 700 sq ft.
Designed with U.S. homeowners in mind, this layout works beautifully as:
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Backyard ADU
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Lake or mountain cabin
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Starter home
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Rental investment property
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Downsizing solution
Smart Layout That Maximizes Every Inch
Step in from the 75 sq ft covered front deck, and you’re welcomed into a warm 123 sq ft living room with a clean furniture layout and excellent wall space for entertainment setup.
Moving inward, the heart of the home opens into a 184 sq ft kitchen + dining area. The L-shaped kitchen design provides efficient workflow between sink, stove, and refrigerator. A rear door leads directly to the 77 sq ft back deck, making indoor-outdoor entertaining effortless.
Comfortable Private Zones
The primary bedroom (10’0” x 10’11”) is strategically placed for privacy. It connects to a generous 10’ walk-in closet, a rare luxury in homes under 600 sq ft.
The full bathroom includes:
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Enclosed shower
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Vanity
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Toilet
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Dedicated circulation space
A stacked washer/dryer niche is integrated into the plan, eliminating the need for off-site laundry—perfect for full-time occupants.
Technical Construction Details
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Overall Dimensions: 21’ Width x 26’ Depth
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Conditioned Area: 548 SQ FT
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Unconditioned Area: 152 SQ FT (Decks)
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Total Coverage: 700 SQ FT
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Livable Area: 539 SQ FT
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Foundation: Crawlspace
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Exterior Framing: 2×6 Wood
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Interior Framing: 2×4 Wood
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Main Roof Pitch: 8:12
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Ceiling Height (First Floor): 10 Feet
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Garage: None
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Stories: 1
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Bedrooms: 1
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Full Baths: 1
The 8:12 roof pitch gives this home charming cottage proportions while allowing for excellent water runoff and structural durability in snow-prone U.S. regions.
The 2×6 exterior framing enhances insulation potential—ideal for meeting energy efficiency standards across various U.S. climate zones.
Why This Plan Works for U.S. Buyers
✔ Meets growing ADU demand
✔ Compact yet full-featured
✔ Affordable to build
✔ Low maintenance footprint
✔ Ideal for rural or suburban lots (0.11 acre lot analysis shown)
✔ Energy-efficient framing system
✔ Perfect short-term rental layout
Built for Simplicity. Designed for Comfort.
At TM Studio-Small House Design, we create small homes that feel intentional—not cramped.
The TMS-058-CF1 proves that 548 sq ft can deliver comfort, privacy, storage, laundry, outdoor living, and smart design—all in one efficient structure.
If you’re planning to build a tiny house, ADU, or cozy cottage in the U.S., this floor plan is a practical and beautiful solution.

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