Looking for an addition contractor in Port Arthur, TX? Describe your project once and up to three addition contractors who work in Port Arthur and Jefferson County get back to you with a quote. It's free and there is no obligation.
Port Arthur is home to about 55,799 people (2024 Census Bureau estimate), a stable community (−0.4% since 2020). With 739 people per sq mi, it is a semi-rural area. Growing families here often add space instead of moving.
Port Arthur at a glance
- Population (Census Bureau estimate, 2024)
- 55,799 (−0.4% since 2020)
- Rank in Texas
- 69th of 1,224 cities and towns
- Land area
- 76 sq mi
- Population density
- 739 people per sq mi (semi-rural)
- Type
- City (Port Arthur city)
- Main county
- Jefferson County
What to check before hiring in Port Arthur
- Zoning: check Port Arthur's setbacks, lot coverage and height limits first.
- License and permit: in Texas, 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
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ICC: International Code Council
Official information and guidance.
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NAHB
Official information and guidance.
Services available in Port Arthur
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Room addition
Ground-floor addition with foundation, framing, roof and finishes.
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Second-story addition
New floor over the existing house, with structural engineering.
Frequently asked questions in Port Arthur
How much does an addition cost in Port Arthur, TX?
It depends on size, foundation and finishes. Describe your project: contractors who serve Port Arthur 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 three independent addition contractors who serve Port Arthur 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.