Home improvement contractors are generally companies that manage and construct improvements to existing residences—whether kitchens, bathrooms, bedrooms, or complete remodels.

A contract for home improvement includes a description of the scope of the work to be performed; the materials to be used; the general contractor’s obligations to hire and manage subcontractors to construct the various components of the building; the payment terms for the construction of the building and the management of the construction; the time for completion of the work; insurance requirements; and the filing and removal of mechanic’s and materialmen’s liens (also known as construction liens or contractor liens) for labor and materials provided to improve the real estate.

In Washington State, home improvement contractors must navigate a series of regulations to ensure compliance with state law. Contractors are required to register with the Washington State Department of Labor & Industries, which involves showing proof of insurance and a bond. Contracts for home improvement must be in writing and include specific details such as the scope of work, materials to be used, payment terms, and a timeline for completion. Washington law also mandates that contractors provide information about lien rights to the homeowner. This is to ensure that homeowners are aware that subcontractors and suppliers have the right to place a lien on the property if they are not paid. The contractor is responsible for managing the construction process, including hiring and managing subcontractors. If a lien is filed, the contractor must follow the procedures for filing and removing mechanic's and materialmen's liens as outlined in the Washington State's lien law, which is designed to protect both the homeowner's and the contractor's interests.