Looking for a special inspection agency in Irwin, PA? Describe your project once and up to three special inspection agencies who work in Irwin and Westmoreland County get back to you with a quote. It's free and there is no obligation.
Irwin is home to about 3,798 people (2024 Census Bureau estimate), a shrinking community (−2.2% since 2020). With 4,533 people per sq mi, it is a densely built-up area. Commercial and multifamily projects here require special inspections for structural work.
Irwin at a glance
- Population (Census Bureau estimate, 2024)
- 3,798 (−2.2% since 2020)
- Rank in Pennsylvania
- 268th of 1,013 cities and towns
- Land area
- 0.8 sq mi
- Population density
- 4,533 people per sq mi (densely built-up)
- Type
- Borough (Irwin borough)
- Main county
- Westmoreland County
What to check before hiring in Irwin
- Statement: the building official approves the statement of special inspections.
- Independence: in Pennsylvania, the owner usually hires the agency.
- Certifications: ask for ICC, ACI or AWS credentials.
- Price drivers: scope, site visits, lab tests and reports.
Useful official resources
-
ICC: International Code Council
Official information and guidance.
-
ACI: American Concrete Institute
Official information and guidance.
Services available in Irwin
-
Special inspections and testing
IBC chapter 17 special inspections and materials testing for a construction project.
Frequently asked questions in Irwin
How much do special inspections cost in Irwin, PA?
It depends on the scope, visits and tests. Describe your project: agencies who serve Irwin reply with a proposal.
How fast can inspectors come on site?
Many agencies offer next-day scheduling.
Do they test materials too?
Most agencies run a materials lab for concrete, soils and steel.
Which special inspection agencies will contact me?
Up to three independent special inspection agencies who serve Irwin 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.