Tiny Home on FoundationPlan HG-1009
482 Sq Ft (16x30) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
482
Sq Ft
1
Beds
1
Baths
16x30
Shell
Shell Est: $24,000
Curated Collection • 10 Floor Plans
400 Sq Ft Tiny Home on Foundation Floor Plans (IRC Vetted)
Permanent IRC R304-compliant tiny home blueprints from 300 to 500 sq ft on slab or crawlspace foundations with full baths, kitchens, and zero wasted corridor space.
10 Plans
10 Plans
Tiny Home on FoundationPlan HG-1048
322 Sq Ft (16x20) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
322
Sq Ft
1
Beds
1
Baths
16x20
Shell
Shell Est: $15,500
Tiny Home on FoundationPlan HG-1051
386 Sq Ft (16x24) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
386
Sq Ft
1
Beds
1
Baths
16x24
Shell
Shell Est: $19,000
Tiny Home on FoundationPlan HG-1056
450 Sq Ft (16x28) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
450
Sq Ft
1
Beds
1
Baths
16x28
Shell
Shell Est: $22,500
Tiny Home on FoundationPlan HG-1061
482 Sq Ft (16x30) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
482
Sq Ft
1
Beds
1
Baths
16x30
Shell
Shell Est: $24,000
Tiny Home on FoundationPlan HG-1066
512 Sq Ft (16x32) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
512
Sq Ft
1
Beds
1
Baths
16x32
Shell
Shell Est: $25,500
Tiny Home on FoundationPlan HG-1102
432 Sq Ft (18x24) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
432
Sq Ft
1
Beds
1
Baths
18x24
Shell
Shell Est: $21,000
Tiny Home on FoundationPlan HG-1107
504 Sq Ft (18x28) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
504
Sq Ft
1
Beds
1
Baths
18x28
Shell
Shell Est: $25,000
Tiny Home on FoundationPlan HG-1143
402 Sq Ft (20x20) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
402
Sq Ft
1
Beds
1
Baths
20x20
Shell
Shell Est: $19,500
Tiny Home on FoundationPlan HG-1148
482 Sq Ft (20x24) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan
482
Sq Ft
1
Beds
1
Baths
20x24
Shell
Shell Est: $23,500
400 Sq Ft Tiny Home Plans — Build Cost Guide & FAQs
Planning tips, cost estimates, and related floor plan collections
400 Sq Ft Tiny Home Plans — Build Cost Guide & FAQs
Planning tips, cost estimates, and related floor plan collections
Spatial Layout & Structural Bay Optimization
Permanent IRC R304-compliant tiny home blueprints from 300 to 500 sq ft on slab or crawlspace foundations with full baths, kitchens, and zero wasted corridor space. Each of the 10 blueprints curated in this search silo has been solved on a true structural grid with zero dead-space corridors, consolidated wet-wall plumbing cores, and verified furniture/appliance clearance zones.
Comparing Shell Kits, Financing & Contractor Takeoffs
With an average turnkey build estimate of $89,900 across this collection, homeowners and builders frequently compare pre-engineered shell packages against local stick-frame lumber takeoffs. Select any blueprint above to customize regional labor multipliers, review concrete and stud quantities, and download the vector CAD drawing.
What makes these 400 sq ft tiny home on foundation floor plans (irc vetted) IRC code-compliant?
All 10 blueprints in the "400 Sq Ft Tiny Home Plans" collection are verified by our spatial solver for IRC R304 minimum room dimensions, R310 bedroom emergency egress windows, 36-inch clear entryways, and unobstructed doorway swing clearances—scoring 100/100 on our automated CAD geometric audit.
What is the average turnkey cost for 400 sq ft tiny home plans?
Across the 10 matching floor plans on this page, the average turnkey construction cost is $89,900. Every individual blueprint page includes an interactive regional cost estimator and full structural material takeoff so you can compare shell-only vs. turnkey pricing.
Can I download the scalable CAD vector files (.SVG) for free?
Yes. Click any floor plan card above to open its interactive CAD blueprint viewer, inspect exact room-by-room dimensions and builder material takeoffs, and download the scalable vector CAD file (.SVG) and printable spec sheet at no cost.