Second Story Addition in Charleston, SC — Costs $72,080 to $450,500
What does second story addition cost in Charleston? Average $180,200, ranging $72,080–$450,500. Labor runs $26.76/hr locally — 10% below the national average. Free breakdown with material + labor split.
Charleston, SC Market
-10% vs nationalLabor Rate
$26.76/hr
Material Index
91
Avg Permit Cost
$857
Median Home Price
$253,378
Charleston is a mid-sized city in South Carolina with a healthy pool of local contractors. Homeowners generally have several options to compare for a second story addition, which helps keep pricing competitive. Charleston offers slightly below-average renovation costs, giving homeowners a small cost advantage compared to most US markets. The median home in Charleston is valued at $253,378, putting this project at about 71.1% of home value — a moderate investment with a projected 60% ROI.
Low Estimate
$72,080
National: $80,000
Mid-Range
$180,200
National: $200,000
High End
$450,500
National: $500,000
Per Sq Ft
$270
National: $300
Second Story Addition Cost Calculator for Charleston
Adjusted for Charleston's labor rate ($26.76/hr) and material costs (index 91).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Charleston
$180,200
Based on 200 sq ft at mid quality, adjusted for Charleston market rates.
Local Cost Breakdown
At Charleston's average rate of $26.76/hr (11% below national avg)
Material cost index 91 (9% below national baseline of 100)
Second Story Addition vs. Home Value in Charleston
| Metric | Charleston | National Avg |
|---|---|---|
| Second Story Addition (Mid-Range) | $180,200 | $200,000 |
| Median Home Price | $253,378 | $350,000 |
| Project as % of Home Value | 71.1% | 57.1% |
| Estimated ROI | 60% | 60% |
| Median Household Income | $54,388 | $75,000 |
What Affects the Price in Charleston
- 1Local labor rates ($26.76/hr in Charleston)
- 2Material cost index (91 vs national 100)
- 3Total square footage added
- 4Structural reinforcement of first floor
- 5Staircase addition
- 6Roof removal and replacement
Popular Upgrades
- Master suite
- Additional bedrooms
- Jack-and-Jill bathroom
Other Projects in Charleston, SC
Accessory Dwelling Unit (ADU) Construction
$135,150
Room Addition
$81,090
Swimming Pool Installation
$58,682
Garage Addition
$49,555
Home Addition
$72,152
Inground Swimming Pool
$58,741
Attic Conversion
$49,506
Swimming Pool Construction
$45,005
Second Story Addition in Other South Carolina Cities
Planning a Second Story Addition in Charleston
Building permits are typically required for a second story addition in Charleston. The average permit fee in this area is $857, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 4-8 months from start to finish.
A second story addition is a complex project best left to licensed professionals. In Charleston, skilled contractors charge an average of $26.76/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median Charleston household earning $54,388/year, this project at $180,200 represents a significant investment. Consider financing options or phasing the work to spread costs over time.
Second Story Addition — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
All Construction Costs in Charleston
View labor rates, material costs, and project estimates for Charleston, SC.
Explore All Project Cost Guides
Compare costs across 120+ home improvement projects in 3,636 cities nationwide.
View All Project Costs