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Estimate Your Project Budget
Before You Build

Planning a home addition or remodel? Our Construction Cost Calculator gives you a quick, ballpark estimate based on project type and square footage—no sales pressure, no sign-up required. Whether you’re adding living space, renovating interiors, or building a detached structure, this tool helps you understand potential costs early in the process so you can move forward with clarity and confidence.

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Select your project type, enter the size, and see an instant estimate to get started.

Average Room Sizes (For Reference)

Not sure how much square footage to enter? Here are common size ranges to help you estimate. Actual dimensions vary based on layout, finishes, and design standards.

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Living Spaces

  • Primary Bedroom Suite: 250–400 sq ft

  • Standard Bedroom: 120–180 sq ft

  • Living Room / Family Room: 250–400 sq ft

  • Dining Room: 120–200 sq ft

  • Home Office: 100–150 sq ft

  • Playroom / Bonus Room: 200–350 sq ft

 

Kitchen & Bathrooms

  • Kitchen (Standard): 150–250 sq ft

  • Kitchen (Expanded / Open Concept): 250–400 sq ft

  • Full Bathroom: 40–80 sq ft

  • Primary Bathroom: 90–160 sq ft

  • Half Bath / Powder Room: 18–30 sq ft

 

Additions & Specialty Spaces

  • Sunroom / Enclosed Porch: 120–240 sq ft

  • Laundry / Mudroom Combo: 80–140 sq ft

  • Detached Garage (2-Car): 400–500 sq ft

  • Detached Studio / ADU: 350–600+ sq ft

  • Covered Patio / Outdoor Kitchen: 150–350 sq ft

 

Note: These sizes are averages to help you estimate costs. Your project may be smaller or larger depending on layout, zoning, and design goals.

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