How to Start a Roofing Company in Washington

Short answer: To start a roofing company in Washington, register as a specialty contractor with L&I, carry a $15,000 surety bond and liability insurance of at least $250,000 combined, and get a UBI number first. Roofers also need a written fall protection work plan before crews go on a roof.

Updated October 12, 2026. Requirements and fees change; confirm with the agency named on this page.

Washington's weather practically guarantees roofing demand. Between the rain, the wind events on the coast, the snow load east of the mountains, and a housing stock that keeps aging, roofs fail on a schedule homeowners cannot control. If you can run a crew, work safely at height, and show up when you say you will, there is real, steady money in Washington roofing.

The part nobody explains well is what it takes to become a legal roofing business here. There is a real order of operations: naming and structuring the company, getting your state business ID, registering as a contractor with the correct bond, carrying the right insurance, and clearing a few roofing-specific requirements before you ever put a ladder on a house. Skip a step or do them out of order and you lose weeks, or pay for something twice. This is exactly why most people who "look into starting a roofing company" never actually start one.

Ready to skip the guesswork? Build your free Contractor Lane roadmap and get the roofing-specific launch path in the right order, plus startup roadmap tools.

The roofing opportunity in Washington

Roofing sits in a strong spot in the WA market. Storm damage, moss and moisture issues on the west side, ice and snow load on the east side, and a huge inventory of homes built decades ago all create ongoing replacement and repair work. Insurance claims alone keep many roofing companies busy. And because roofing does not require an expensive shop or a large fleet to start, a small, well-run crew can be profitable faster than in trades that need more overhead. The tradeoff is that roofing is physical, higher-risk work, and the state treats it that way when it comes to registration, insurance, and how you can staff a crew.

Your launch roadmap, in order

1. Step 1: Pick a name and a business structure

   Decide whether you will operate as a sole proprietorship, an LLC, or another structure, and confirm your company name is actually available in Washington. This decision affects your taxes and your personal liability if a job goes wrong, which matters more in a physical trade like roofing where accidents and property damage claims happen.

2. Step 2: Get your UBI number and state business license

   Washington issues a 9-digit Unified Business Identifier when you file your state business license application through the Business Licensing Service. Every step after this depends on that number, so it has to be done correctly and in the right order relative to everything else.

3. Step 3: Register as a contractor with L&I

   Nearly all roofing work in Washington requires registration with the Department of Labor & Industries before you can legally advertise or bid a job. Roofing registers as a specialty contractor category, which means a $15,000 continuous surety bond (specialty contractors work one trade; general contractors work across multiple trades and carry a larger bond). The bond amount is the coverage available to a wronged customer, not what you pay out of pocket. The registration itself carries a notarized application and a fee, and you need your UBI in hand before you file.

4. Step 4: Carry the right general liability insurance

   The state sets a minimum of $200,000 public liability and $50,000 property damage, or a $250,000 combined single limit. Roofing crews face more claim exposure than a lot of trades (falls, ladder damage, water intrusion if a job is left exposed), so getting a policy that actually fits roofing work, not just the state minimum on paper, matters.

5. Step 5: Clear the DOSH fall-protection and workers' comp rules

   Roofing is not treated like drywall. Washington runs its own workplace-safety program, the Division of Occupational Safety and Health (DOSH), inside the Department of Labor & Industries, and construction work falls under the safety standards in Chapter 296-155 WAC. Before a crew works at height you need a written fall protection work plan for the job, along with the written Accident Prevention Program every Washington employer must maintain under WAC 296-800-140. These are documents an inspector can ask to see on site, not paperwork you write up afterward. The second half of this trap is money. Washington is unusual: workers' compensation premiums are assessed per hour worked, and each type of work has its own risk classification with its own rate. Roof work sits in one of the higher-rated construction classifications, so the hours you report and the class you report them under drive your premium directly. Reporting roofing hours under a cheaper classification is the kind of error that surfaces in an L&I audit as back premiums and penalties, sometimes years later. Confirm your exact classification and rate with L&I before your first payroll. The paid Contractor Lane roadmap gives you the order to stand up the safety plan and the workers' comp account correctly the first time, with a fill-in Accident Prevention Program template included.

6. Step 6: Get found by your first homeowners

   Being registered does not mean the phone rings. A free Google Business Profile, a Bing Places listing, and one simple web page with your name, service area, phone number, and photos will do more for a new roofing company than an expensive website. Consistency of your name, address, and phone number across every listing matters for local search.

City endorsements and local tax

Getting registered with the state does not finish the licensing question, and this is where a lot of new Washington contractors get a surprise letter. Most Washington cities license businesses through the state Business Licensing Service, so you do not apply for a separate city license: you add a city endorsement to the UBI you already hold, through the Department of Revenue (DOR). A few cities license on their own and have to be handled directly. Which endorsements you owe depends on where you are based and where you actually perform work, so a shop based in Bonney Lake that runs jobs into Tacoma or Puyallup can owe endorsements in each of them. The free DOR Business Licensing Wizard will tell you which ones apply to your situation.

Tax works the same way, in layers. Washington has no state income tax and instead charges a Business & Occupation (B&O) tax on gross receipts, filed with DOR. Separately, some cities, including Seattle and Tacoma, levy their own municipal B&O tax on top of the state one, with their own thresholds, rates, and filing calendars. Two contractors with identical revenue can owe very different local tax depending on which city the work happened in. Confirm your endorsements and local filing obligations with DOR and with each city before you invoice work there.

Why most roofing owners stall before job one

Every one of those steps is manageable on its own. What trips people up is sequencing and the roofing-specific traps hiding inside it. Buy a bond before your business ID exists and you have wasted a step. Assume roofing carries the same bond and insurance profile as a general trade and your numbers are wrong. Skip the safety-at-height and hiring requirements because nobody told you they applied to roofing specifically, and you are exposed the first time you put a helper on a roof. Get registered and then discover no homeowner in your area can find you online. Any one of these is where a capable roofer gives up and goes back to working for someone else's crew.

This is exactly where Contractor Lane closes the gap. We give you the roofing-specific order, flag the traps before you hit them, and give you a free first-pass roadmap so you can start in the right order.

Where Contractor Lane comes in

Contractor Lane is built to be the front door for people starting a roofing company in Washington, the step you take before you ever need an accounting app or get pulled in by a lead-selling site. We map the exact roofing launch path: business structure, UBI and business license, the correct bond and insurance for a specialty roofing registration, the roofing-specific safety and hiring rules, and the online presence that gets a new roofing company its first calls. You get the order, the traps flagged in advance, and a free first-pass roadmap to start in the right order. When you want more hands-on help, the paid Startup Roadmap walks you through the deeper setup.

Stop trying to piece this together from scattered search results and outdated forum posts. Build your free Contractor Lane roadmap and get the complete Washington roofing-company launch roadmap, in the right order, with the free roadmap builder included. When you are ready for guided help, the paid Startup Roadmap is there when you want the full guided setup.

Build your free Contractor Lane roadmap today and take the first real step toward your own roofing company.

General educational information for people starting a business in Washington. Requirements and fees change. Contractor Lane is not a law firm or tax advisor.