How Much Does Room Addition Cost in Denver, CO?
Denver pricing is 15% above the national average. Updated for 2026.
Based on local labor rates, semi-arid climate conditions, and Denver's tech-energy-aerospace economy.See our methodology
Room Addition Pricing in Denver, CO
In Denver, room addition costs are 15% above the national average, reflecting the city's tech-energy-aerospace-driven economy. The tight labor market means you have decent options when shopping for quotes. Most residents with a population base of 715K find the pricing competitive relative to the local cost of living.
Local climate plays a direct role in room addition costs here. Altitude and dry climate affect materials differently; heavy snow loads impact roofing; rapid temperature swings stress HVAC systems.
Market-specific factors matter in Denver: rapid growth has created contractor shortages; altitude requires special considerations for HVAC sizing and combustion equipment.
Denver has moderate permitting requirements. Depending on the scope of your room addition project, you may need local permits. A licensed contractor will handle the permitting process as part of the job in most cases.
Denver vs National Average
What Affects Room Addition Cost in Denver?
Size
Small (100 sq ft): $15,000-$25,000. Average (200 sq ft): $30,000-$50,000. Large (400+ sq ft): $60,000-$100,000+
Room Type
Basic bedroom: $20,000-$40,000. Bedroom + bathroom: $35,000-$65,000. In-law suite: $50,000-$100,000+
Per Sq Ft
Budget: $80-$150/sq ft. Mid-range: $150-$250/sq ft. High-end: $250-$400+/sq ft
Denver Market Conditions
rapid growth has created contractor shortages; altitude requires special considerations for HVAC sizing and combustion equipment
Local Climate Impact
altitude and dry climate affect materials differently; heavy snow loads impact roofing; rapid temperature swings stress HVAC systems
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Tips to Save on Room Addition in Denver
- 1.A bump-out (extending an existing room 2-4 feet) costs $5,000-$15,000 — much less than a full addition
- 2.Building over an existing garage or patio saves on foundation costs
- 3.A dormer addition (expanding attic space) costs 30-50% less than a ground-floor addition
- 4.Act as your own general contractor if you have experience — save 15-25% on management fees
📈 Room Addition in Denver Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $43,956 | — |
| 2021 | $45,802 | +4.2% |
| 2022 | $48,779 | +6.5% |
| 2023 | $50,145 | +2.8% |
| 2024 | $51,750 | +3.2% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Room Addition in Denver
Recent Reports
Frequently Asked Questions
Does a room addition increase home value?
Yes, though ROI varies: 50-65% for a standard room addition, 60-75% for a bedroom + bathroom addition. The value also depends on whether the addition fits the neighborhood — over-improving for your area yields lower returns.
How long does a room addition take?
Typical timeline: 2-4 weeks for permits and planning. 8-16 weeks for construction. Total: 3-5 months. Complex additions with full bathrooms or custom features can take 6-12 months.
Why does room addition cost different in Denver than other cities?
Denver's costs reflect local labor rates driven by the tech-energy-aerospace economy, semi-arid climate conditions that affect materials and scheduling, and moderate permitting requirements. The tight labor market also influences competitive pricing.
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