Home › Maryland › Baltimore City › Baltimore › Bobby C. Holderby

Bobby C. HolderbyLicensed

Licensed septic contractor based in Baltimore, Baltimore City, MD

License details

Company	A2Z Environmental Group, LLC
License number	00939
License type	Registered On-Site Wastewater (Septic) Professional
License status	Current, MD State Board of On-Site Wastewater Professionals
License expires	December 31, 2026
Based in	Baltimore, Baltimore City, Maryland 21224

"Based in" is the city and county of the address on the business's license record.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #00939 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: MD State Board of On-Site Wastewater Professionals - registered individuals, last checked 2026-08-17. Look it up at the issuing agency.

Compare licensed contractors based in Baltimore

All listings based in Baltimore 50

Other septic contractors based in Baltimore

Aaron M. DorseyLicensed

Septic

Based in Baltimore, MD · License #01824

Phillip B. StrayerLicensed

Septic

DSI, Inc. · Based in Baltimore, MD · License #02005

Brian R. DietzLicensed

Septic

Dietz Surveying, Inc · Based in Baltimore, MD · License #01448

Mike SteeleLicensed

Septic

Atlantic Mechanical, LLC · Based in Baltimore, MD · License #02250

Brian M. Bates, Jr.Licensed

Septic

Based in Baltimore, MD · License #02041

Ruddy R. SedaLicensed

Septic

Based in Baltimore, MD · License #02039

Other licensed septic contractors based in Baltimore City

Bernard TillmanLicensed

Septic

Bernella's Plumbing · Based in Brooklyn, MD · License #01005

Timothy M. ShotzbergerLicensed

Septic

HomeLand Environmental · Based in Towson, MD · License #02083

Christopher GeorgeLicensed

Septic

Based in Baltimore, MD · License #00520

Vincent E. GreeneLicensed

Septic

Vincent Greene Architects · Based in Baltimore, MD · License #01405

James ChapoliniLicensed

Septic

Tech Contracting Co., Inc · Based in Baltimore, MD · License #01048

See every listing based in Baltimore City or in Baltimore.