What to know about home addition in Denver
Frost heave and freeze-thaw in Denver can stress foundations, so good drainage and proper footing depth matter for a lasting result.
What affects home addition cost in Denver
Beyond the local market, the same factors that drive home addition cost everywhere apply in Denver:
- Addition size in square feet.
- Type: a bump-out is cheapest, a second-story addition the most expensive.
- Whether it includes a kitchen or bathroom (plumbing).
- Foundation, framing, roof, and tie-in to the existing structure.
Home Addition cost by addition type in Denver
These figures are adjusted for Denver pricing (about 1.12x the national average), so they reflect what local homeowners actually pay.
| Addition type | Cost in Denver | Typical total |
|---|---|---|
| Bump-out (a few feet) | $89.60 to $269 /sq ft | About $35,800 to $107,500 |
| Sunroom | $101 to $302 /sq ft | About $40,300 to $121,000 |
| Single room addition | $112 to $336 /sq ft | About $44,800 to $134,400 |
| In-law / suite with bath | $134 to $403 /sq ft | About $53,800 to $161,300 |
| Second-story addition | $157 to $470 /sq ft | About $62,700 to $188,200 |