Looking for an addition contractor in Swansea, SC? Describe your project once and up to five addition contractors who work in Swansea and Lexington County get back to you with a quote. It's free and there is no obligation.
Swansea is home to about 771 people (2024 Census Bureau estimate), a growing community (+6.5% since 2020). With 370 people per sq mi, it is a semi-rural area. Growing families here often add space instead of moving.
Swansea at a glance
- Population (Census Bureau estimate, 2024)
- 771 (+6.5% since 2020)
- Rank in South Carolina
- 166th of 271 cities and towns
- Land area
- 2.1 sq mi
- Population density
- 370 people per sq mi (semi-rural)
- Type
- Town (Swansea town)
- Main county
- Lexington County
What to check before hiring in Swansea
- Zoning: check Swansea's setbacks, lot coverage and height limits first.
- License and permit: in South Carolina, additions are built by licensed contractors under a permit.
- Structure: second stories need an engineer to check the existing house.
- Price drivers: size, foundation, roof tie-in, plumbing and finishes.
Useful official resources
-
ICC: International Code Council
Official information and guidance.
-
NAHB
Official information and guidance.
Services available in Swansea
-
Room addition
Ground-floor addition with foundation, framing, roof and finishes.
-
Second-story addition
New floor over the existing house, with structural engineering.
Frequently asked questions in Swansea
How much does an addition cost in Swansea, SC?
It depends on size, foundation and finishes. Describe your project: contractors who serve Swansea reply with a quote.
How long does it take?
Often a few months, plus design and permits.
Does an addition raise property taxes?
Usually, since it increases the assessed value.
Which addition contractors will contact me?
Up to five independent addition contractors who serve Swansea and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.