| Average cost | $15,000 |
| Medium | $13,000 - $17,000 |
| Low end and high end | $10,500 - $22,000 |
A homeowner can use contractor verification tool to check out if a contractor meets WA state requirements:
A contractor registration is required by the State of Washington if a homeowner project involves any work that increases or decreases the value of real estate or consulting on a construction project. Contractors are not required to be registered if the customer needs gutter cleaning or pruning or lawn care or window washing to be performed.