The term "museum quality work" is a truly apt description of the high level of construction workmanship that John O'Hara brings to its museum, library, organizational and non-profit projects. The firm knows and understands the unique needs of museums to have the highest quality workmanship, because of their high public visibility and traffic. 

The firm is skilled at working with designers to organize work on a phased and/or fast track basis, according to the client's needs. Heating, ventilation, de-humidification and air conditioning systems cannot be "good enough"—they must be perfect to protect exhibits and archives against deterioration from airborne and other pollutants. Security systems, fire protection measures, art storage areas and crucial access/egress requirements for exhibit shipping and storage are only a few of the other special concerns for cultural institutions. When you really do need "museum quality work", you need the John O'Hara Company.

Selected clients include:

Newark Museum, NJ
The Morgan Library & Museum, NY
American Museum of Natural History, NY
Visiting Nurse Association of Northern NJ, Inc., NJ
Seaman’s Church Institute, NY
National Civil War Museum, PA
Catholic Charities Bronx Community Center, NY