A contractor
is defines any person, firm, partnership, corporation, association,
or other organization, or a combination of them, which undertakes
to or offers to undertake to, or submits a bid to, or does himself/herself
or by or through others, construct, alter, repair, add to, subtract
from, improve, move, wreck, or demolish any building, highway, road,
railroad, excavation, or other structure, project, development or
improvement, or perform any work to build, erect, construct, improve,
repair, remodel, expand or otherwise construct, reconstruct, alter
any structure or permanent physical improvement on real property,
or to do any part thereof, including the erection of scaffolding or
other structure or works in connection therewith and includes subcontractor,
electrical contractor, plumbing contractor, and special trade contractor,
including acoustical, air conditioning, and heating insulation.