BUILDING CODES

Code Check- Help with Building Codes 

International Association of Electrical Inspectors (IAEI) 

National Fire Protection Agency (NFPA)

International Code Council

Southern Pine Council

CONSTRUCTION

National Concrete Masonry Association 

American Wood Council

Fire Retardant Wood 

Find Reliable Contractors 

Sound Home Resource

North American Deck & Railing Association

Simpson Strong-Tie

James Hardie Building Products

ELECTRICAL

Holt's National Electrical Code 

Hometime

International Association of Electrical Inspectors (IAEI)

ENVIRONMENTAL

Pollution Online 

U.S. Environmental Protection Agency

FIREPLACES & CHIMNEYS

Chimneys.com 

Chimney Safety Institute of America (CSIA)

GOVERNMENT AGENCIES

Maryland Dept of Labor, Licensing, and Regulation (DLLR) - Division of Occupational and Professional Licensing

US Army Corps of Engineers Information Network  

Consumer Product Safety Commission  

OSHA - Occupational Safety and Health Administration 

FEMA - Federal Emergency Management Agency

HEATING & COOLING

Preston's HVAC Guide Books list Mfgs, Models, Capacity, Etc. 

The TRANE Company

Lennox 

Carrier 

Oil & Energy Service Professionals

REAL ESTATE

International Real Estate Digest (IRED) 

National Association of REALTORS