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Home Addition Cost in Georgia (2026 Guide) — illustrated 2026 guide

Home Addition Cost in Georgia

Updated October 2026 · Based on Georgia contractor data

$38,000
Low Estimate
$76,000
State Average
$136,800
High Estimate

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Total Cost
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Cost per Sq Ft
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Home Addition Costs in Georgia (400 sq ft)

Addition Type Cost in GA Per Sq Ft National
Bedroom $43,700 $109/sqft $46,000
Bathroom $83,600 $209/sqft $88,000
Garage $26,600 $67/sqft $28,000
Sunroom $53,200 $133/sqft $56,000
Second Story $110,200 $276/sqft $116,000
Adu $87,400 $219/sqft $92,000

Home Additions in Georgia

Home addition costs in Georgia run near the national average. Georgia construction costs align with U.S. averages.

What's Included in Home Addition Costs

  • • Design and architectural drawings: $2,000–$8,000
  • • Permits and inspections: $1,425–$4,750
  • • Foundation: $4,750–$19,000 depending on type
  • • Framing, roofing, exterior: $24–$57/sqft
  • • Interior finishes: $38–$114/sqft

Planning Tips

  • • Budget 10–20% contingency for unexpected issues
  • • Get quotes from at least 3 licensed general contractors
  • • Confirm zoning setback requirements before designing
  • • Consider financing options: HELOC rates vary by state

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Frequently Asked Questions

How much does a home addition cost in Georgia?
Home additions in Georgia cost $38,000–$136,800, with an average around $76,000.
How much does it cost to add a bedroom?
Adding a bedroom in Georgia costs $43,700–$61,180 for a typical 400 sq ft room.
Is a home addition worth it?
Home additions typically recoup 50–80% of cost at resale. ADUs offer the best ROI through rental income potential.
How long does a home addition take?
A bedroom/bathroom addition takes 1–3 months. A second-story addition or ADU takes 3–6 months. Include 4–8 weeks for permitting.
What is the cheapest type of home addition?
A garage or sunroom addition is typically cheapest at $26,600–$53,200 for 400 sq ft.