Addition square footage
Quality Tier
Standard materials, solid craftsmanship
Scope of Work
Labor
Home Addition Cost in Westminster CO: 2026 Guide
Use the calculator above to get a quick estimate. The guide below explains what drives home addition costs in Westminster CO and what to expect from contractors in Westminster CO.
Typical Home Addition Costs in Westminster CO
| Project Scope | Low | High |
|---|---|---|
| Simple room bump-out (100–200 sqft) | $9,000 | $16,800 |
| Standard bedroom addition (200–350 sqft) | $25,800 | $56,800 |
| Master suite with bathroom (350–500 sqft) | $56,800 | $67,000 |
| Full in-law suite or major addition (600–1,000 sqft) | $67,000 | $154,400 |
What Affects Home Addition Costs in Westminster CO?
Labor rates: Contractors in Westminster CO charge $46–$93/hour for home addition work — close to the national average.
Material costs: Material prices in the Mountain region are close to national average due to local supply, transportation costs, and market demand.
Project complexity: Site conditions, permitting requirements, and non-standard layouts can add 15–30% to total project cost.
Frequently Asked Questions
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Estimated cost in Westminster CO
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