Room Addition in Frederick, MD — Costs $42,443 to $242,533
What does room addition cost in Frederick? Average $109,140, ranging $42,443–$242,533. Labor runs $37.96/hr locally — 21% above the national average. Free breakdown with material + labor split.
Frederick, MD Market
+21% vs nationalLabor Rate
$37.96/hr
Material Index
116
Avg Permit Cost
$1,748
Median Home Price
$451,778
In a smaller market like Frederick, Maryland, the pool of contractors specializing in room addition may be more limited. Getting 3+ quotes is especially important to ensure fair pricing. At 21% above the national average, Frederick is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. The median home in Frederick is valued at $451,778, putting this project at about 24.2% of home value — a moderate investment with a projected 55% ROI.
Low Estimate
$42,443
National: $35,000
Mid-Range
$109,140
National: $90,000
High End
$242,533
National: $200,000
Per Sq Ft
$243
National: $200
Room Addition Cost Calculator for Frederick
Adjusted for Frederick's labor rate ($37.96/hr) and material costs (index 116).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Frederick
$109,140
Based on 200 sq ft at mid quality, adjusted for Frederick market rates.
Local Cost Breakdown
At Frederick's average rate of $37.96/hr (27% above national avg)
Material cost index 116 (16% above national baseline of 100)
Room Addition vs. Home Value in Frederick
| Metric | Frederick | National Avg |
|---|---|---|
| Room Addition (Mid-Range) | $109,140 | $90,000 |
| Median Home Price | $451,778 | $350,000 |
| Project as % of Home Value | 24.2% | 25.7% |
| Estimated ROI | 55% | 55% |
| Median Household Income | $80,541 | $75,000 |
What Affects the Price in Frederick
- 1Local labor rates ($37.96/hr in Frederick)
- 2Material cost index (116 vs national 100)
- 3Square footage
- 4Foundation type
- 5Number of stories
- 6Roof integration
Popular Upgrades
- Cathedral ceiling
- En-suite bathroom
- Walk-in closet
Other Projects in Frederick, MD
Second Story Addition
$242,533
Accessory Dwelling Unit (ADU) Construction
$181,900
Swimming Pool Installation
$78,139
Garage Addition
$66,697
Home Addition
$96,592
Inground Swimming Pool
$77,796
Attic Conversion
$66,986
Swimming Pool Construction
$60,897
Room Addition in Other Maryland Cities
Planning a Room Addition in Frederick
Building permits are typically required for a room addition in Frederick. The average permit fee in this area is $1,748, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 3-6 months from start to finish.
A room addition is a complex project best left to licensed professionals. In Frederick, skilled contractors charge an average of $37.96/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
With a median household income of $80,541, many Frederick residents can budget for this project through savings. The mid-range cost of $109,140 represents 136% of the typical household's annual income.
Room Addition — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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