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📌 Key Takeaway: Home additions typically cost $125-$250 per sq ft, with second stories $200-$500+. A midrange bathroom remodel averages about $15,600 and kitchen remodels commonly run $35,000-$75,000.
Common Project Types
Room Additions
Adds living space on a new foundation. A 20x20 room (400 sq ft) commonly runs $50,000-$100,000.
Bump-Outs
Extends a wall a few feet without a full addition.
Second-Story Additions
Adds space without using yard, but the existing structure must support it.
Kitchen & Bathroom Remodels
Remodels update existing rooms; layout changes that move plumbing drive costs up.
2026 Addition & Remodel Price Snapshot
| Project | Typical Cost |
|---|---|
| Room addition | $125-$250 per sq ft |
| Bump-out | $85-$200 per sq ft |
| Primary suite addition | $45,000-$135,000 |
| Sunroom | $100-$350 per sq ft |
| Second story | $200-$500+ per sq ft |
| ADU / in-law suite | $100-$300 per sq ft |
| Garage conversion | $50-$200 per sq ft |
| Bathroom remodel (average) | About $15,600 |
| Kitchen remodel (midrange) | $35,000-$75,000 |
Soft Costs to Budget
| Item | Typical Cost |
|---|---|
| Architect / engineer plans | $1,200-$5,000 |
| Building permits | $500-$2,000 |
| Land survey | $400-$1,800 |
| New foundation | $2,400-$10,500 |
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Get Free Quotes →Frequently Asked Questions
Is it cheaper to add on or move?
It depends on your market. Compare the addition cost with the price difference to a larger home, plus moving and closing costs.
How much of an addition's cost is recouped at sale?
Typically about 60-80%, depending on the project and local market.
Do I need an architect?
Most additions need drawn plans for permits. Smaller projects may use a designer or design-build contractor.
🔎 How we research: The ServiCover Editorial Team compiles prices and guidance from published 2026 cost guides, manufacturer information and industry sources. Prices are national ranges and vary by location, home and provider, so always compare written quotes. We don't perform the work ourselves, and we may earn a commission when you request quotes through our partners — see our Advertiser Disclosure.