Three-Season Room Addition in Baltimore, MD — Costs $10,916 to $88,689
What does three-season room addition cost in Baltimore? Average $34,111, ranging $10,916–$88,689. Labor runs $44.03/hr locally — 36% above the national average. Free breakdown with material + labor split.
Baltimore, MD Market
+36% vs nationalLabor Rate
$44.03/hr
Material Index
128
Avg Permit Cost
$2,405
Median Home Price
$462,921
As one of the largest metros in Maryland, Baltimore has a competitive contractor market with hundreds of licensed professionals. This typically gives homeowners more leverage on pricing, though high demand for renovations can offset that advantage. At 36% above the national average, Baltimore is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. The median home in Baltimore is valued at $462,921, putting this project at about 7.4% of home value — a moderate investment with a projected 50% ROI.
Low Estimate
$10,916
National: $8,000
Mid-Range
$34,111
National: $25,000
High End
$88,689
National: $65,000
Per Sq Ft
$130
National: $95
Three-Season Room Addition Cost Calculator for Baltimore
Adjusted for Baltimore's labor rate ($44.03/hr) and material costs (index 128).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Baltimore
$34,111
Based on 200 sq ft at mid quality, adjusted for Baltimore market rates.
Local Cost Breakdown
At Baltimore's average rate of $44.03/hr (47% above national avg)
Material cost index 128 (28% above national baseline of 100)
Three-Season Room Addition vs. Home Value in Baltimore
| Metric | Baltimore | National Avg |
|---|---|---|
| Three-Season Room Addition (Mid-Range) | $34,111 | $25,000 |
| Median Home Price | $462,921 | $350,000 |
| Project as % of Home Value | 7.4% | 7.1% |
| Estimated ROI | 50% | 50% |
| Median Household Income | $82,298 | $75,000 |
What Affects the Price in Baltimore
- 1Local labor rates ($44.03/hr in Baltimore)
- 2Material cost index (128 vs national 100)
- 3Size
- 4Foundation type
- 5Screen vs window panels
- 6Roof style
Popular Upgrades
- Interchangeable screen and window panels
- Ceiling fans
- Outdoor-rated furniture
Other Projects in Baltimore, MD
Second Story Addition
$274,767
Accessory Dwelling Unit (ADU) Construction
$206,075
Room Addition
$123,645
Swimming Pool Installation
$88,079
Home Addition
$109,156
Inground Swimming Pool
$87,469
Attic Conversion
$76,077
Swimming Pool Construction
$69,161
Three-Season Room Addition in Other Maryland Cities
Planning a Three-Season Room Addition in Baltimore
Building permits are typically required for a three-season room addition in Baltimore. The average permit fee in this area is $2,405, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 2-4 weeks from start to finish.
A three-season room addition is a complex project best left to licensed professionals. In Baltimore, skilled contractors charge an average of $44.03/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
With a median household income of $82,298, many Baltimore residents can budget for this project through savings. The mid-range cost of $34,111 represents 41% of the typical household's annual income.
Three-Season Room Addition — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
All Construction Costs in Baltimore
View labor rates, material costs, and project estimates for Baltimore, MD.
Explore All Project Cost Guides
Compare costs across 120+ home improvement projects in 3,636 cities nationwide.
View All Project Costs