How Much Does Room Addition Cost in Portland, ME?
Portland pricing is near the national average. Updated for 2026.
Based on local labor rates, varied climate conditions, and Portland's diversified economy.See our methodology
Room Addition Pricing in Portland, ME
In Portland, room addition costs are 8% above the national average, reflecting the city's diversified-driven economy. The balanced labor market means you have decent options when shopping for quotes. Most residents with a population base of 68K find the pricing competitive relative to the local cost of living.
Local climate plays a direct role in room addition costs here. Cold winters and mild summers create seasonal pricing patterns for outdoor work.
Market-specific factors matter in Portland: established contractor market with competitive pricing.
Portland 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.
Portland vs National Average
What Affects Room Addition Cost in Portland?
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
Portland Market Conditions
established contractor market with competitive pricing
Local Climate Impact
cold winters and mild summers create seasonal pricing patterns for outdoor work
📐 Room Addition in Portland Cost Calculator
Get a personalized estimate based on your project details
Get Free Renovation Estimates
Connect with licensed contractors for your project.
Top-Rated Room Addition Pros in Portland, ME
6 providersCraftsman Renovations
✅ VERIFIEDArtisan Kitchen & Bath
Creative Home Design
Are You a Room Addition Professional?
Get listed on CostWhale and reach thousands of customers searching for room addition in Portland, ME.
🔍 Get Free Quotes from Local Pros
Compare prices from pre-screened contractors in your area. Free, no-obligation estimates.
* CostWhale may earn a commission. This doesn't affect our pricing data or recommendations.
Tips to Save on Room Addition in Portland
- 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 Portland Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $41,280 | — |
| 2021 | $43,014 | +4.2% |
| 2022 | $45,810 | +6.5% |
| 2023 | $47,093 | +2.8% |
| 2024 | $48,600 | +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 Portland
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 Portland than other cities?
Portland's costs reflect local labor rates driven by the diversified economy, varied climate conditions that affect materials and scheduling, and moderate permitting requirements. The balanced labor market also influences competitive pricing.
Room Addition Cost in Nearby Cities
Related Cost Guides for Portland
Popular Services in Portland
💰 Get Weekly Cost-Saving Tips
Join 10,000+ smart homeowners. Unsubscribe anytime.