How Do I Find a Trustworthy Contractor for Window or Door Installation?

This is the right question to ask first. A poor installation — even with a great product — leads to drafts, leaks, and callbacks. Here's what to look for:

1. Licensed and insured in Washington State — verify the contractor's license number on the L&I website and confirm they carry both liability and workers' comp coverage
2. Itemized written estimate — materials, labor, permit fees, and disposal should each be listed separately; be skeptical of vague lump-sum bids
3. Clear policy on hidden conditions — ask specifically how they handle wood rot or damaged framing discovered mid-project, and how that's priced
4. Reasonable payment structure — a deposit to order materials is standard; never pay more than 50% upfront, with final payment at completion
5. References from similar projects — a company that installs 50 windows a week operates very differently from a craftsman who treats each opening as its own problem to solve

At Crest & Level, we specialize in the finish work that makes doors and windows perform and look right — proper shimming, trim integration, and weather sealing included.