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Last updated: September 2026
I&

I & S Group, Inc.

Sioux Falls, SD

I & S Group, Inc. is a multidisciplinary architecture, environmental, engineering, and planning firm serving clients nationwide. Founded in 1973, ISG conducts Phase 1 Environmental Site Assessments for real estate development and land-acquisition due diligence and coordinates Phase 2 testing with outside consultants.

phase i environmental site assessmentsphase ii testing coordinationenvironmental due diligencehistorical records searchesregulatory reviewscontamination risk assessment
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Credentials & Experience

Years of Experience
53+

Coverage Area

Serving clients nationwide.

Additional Details

Years of Experience
53 years
Service Types Offered
Phase I ESAPhase II ESA

Location

Sioux Falls, SD

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