The Diocese of New York Property Support Committee maintains a web library of property maintenance references that is available to the whole Church. Articles on a variety of maintenance topics can be downloaded here:
Partners for Sacred Places is a non-denominational non-profit organization that assists churches in finding ways to preserve historic religious properties. They maintain a web library of useful maintenance resources.
The General Services Administration has developed Historic Preservation Technical Procedures, many of which are relevant to church properties. These can be accessed at:
The Interfaith Coalition on Energy offers a number of helpful articles on energy conservation for religious structures:
The U.S. Energy Star program offers assistance and a detailed manual of energy conservation for congregations at:
A resource list of Stained Glass conservators is provided at:
The World Floor Covering Association (WFCA) has great information on high traffic floor coverings, durability and cleaning techniques.
An excellent resource for paint issues is maintained by Rohm and Haas at:
The American Institute of Architects maintains a directory of architectural firms, which you can sort by geography and project type, at: