Barndominium permitting is limited statewide; extra approvals or variances may be needed.
The Maryland Department of Labor adopts the state building code. Counties and municipalities administer and enforce it locally.
Primary Code
Maryland Building Performance Standards
Code Version
2021 IBC / 2021 IRC with MD amendments
Adoption Level
Statewide
Statewide Enforcement
Yes
Plan review is thorough. Critical area review applies in Chesapeake Bay watershed. Stormwater management requirements can add complexity.
Residential
Required
Commercial
Required
Agricultural
Not Required
Size threshold: structures under 200 sq ft may be exempt.
Agricultural buildings on farms may qualify for exemptions from certain building code requirements. Must be used exclusively for agricultural purposes.
Small structures under 200 sq ft may be exempt.
Coastal wind loads on the Eastern Shore. Moderate to heavy snow loads in western Maryland mountains.
Wind Load
100–140 mph
high zone
Snow Load
20–40 psf
Seismic
A–B
Category
Flood
FEMA Regulated
Energy Code
IECC
Version
2021 IECC
Strict energy code enforcement statewide.
License Type
Home Improvement Contractor (MHIC) license
Maryland requires MHIC licensing for residential contractors. Commercial contractors also need appropriate licensing.
Front
25–50 ft
Side
10–25 ft
Rear
20–35 ft
Strict setbacks in most jurisdictions. Critical area buffers near Chesapeake Bay.
Frost depth 30-36 inches. Basements common in western MD. Sandy soils on Eastern Shore.
Full permits required. Zoning restrictions in suburban areas.
Agricultural exemptions in rural counties on the Eastern Shore and western Maryland.
Challenging in most jurisdictions. Strict aesthetic and zoning requirements. Eastern Shore and western MD are most flexible.
Full permits required.
Full state building code compliance required.
HOAs very common in Montgomery, Howard, Anne Arundel, and Baltimore County suburbs. Metal buildings restricted in most HOA communities.
Extensive flood zones along Chesapeake Bay, Potomac River, and coastal areas.
Verify the information above directly from these official sources. Regulations change — always confirm with your local building department before starting construction.
Disclaimer: This guide is for informational purposes only and does not constitute legal or professional advice. Building codes, permit requirements, and zoning regulations change frequently. Always verify current requirements with your local building department, planning office, or a licensed professional before starting construction. Homestead Steel Structures & Design is not a legal authority on building codes or zoning regulations. Last updated February 2026.
