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home addition cost calculator

Home addition cost calculator

I make this tool for you to calculate your extra Home addition cost calculator all tools are avaliable on our website House cost calculator

Room Addition (Bedroom, Office)$80 – $250  / $125 – $250 $20,000 – $75,000 Size, basic finishes, connection to existing HVAC/electrical 
Kitchen Addition$150 – $250  / $200 – $250 $50,000 – $100,000 Complex plumbing/electrical, cabinetry, appliance quality, countertops 
Bathroom Addition$200 – $300  / $175 – $225 $25,000 – $60,000 Plumbing fixtures, tiling, ventilation 
Second-Story Addition$200 – $500+ $80,000 – $200,000+ Major structural work, foundation reinforcement, new roof, stairs 
Sunroom Addition$100 – $350 $15,000 – $105,000 Insulation, HVAC extension, quality of windows/glass 
Garage Addition$50 – $150 $20,000 – $60,000 Attached vs. detached, foundation, utilities, finishes 
ADU (In-Law Suite)$100 – $300 Varies by sizeIncludes kitchen & bathroom; must function as independent living space 
Attic Conversion$50 – $150 Varies by sizeLess structural work, but may require flooring, windows, and HVAC 
Basement Conversion$50 – $100 Varies by sizeMoisture-proofing, ceiling height, egress windows 

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Home Addition Cost Calculator

Home Addition Cost Calculator

Get an instant estimate for your home addition project

* This is an estimate only. Actual costs may vary based on specific project requirements, materials, and local labor rates. We recommend consulting with professional contractors for accurate quotes.