There is no universally right answer, but for a contractor carrying real jobsite risk, the trade-offs lean a particular way.
This is one of the first forks in the road, and it changes how you register. A sole proprietor is the simplest and cheapest to start — you and the business are legally the same. An LLC is a separate legal entity that, done correctly, separates your personal assets from business liabilities.
Contracting carries real liability — property damage, injury, warranty claims. An LLC can put a wall between a business claim and your house and savings. That protection is not absolute (it will not shield you from your own negligence, and it does not replace insurance or the bond), but for a trade with jobsite exposure it is meaningful.
The bond and insurance are still required either way — an LLC does not replace them. Think of it as layers: the LLC separates entities, insurance pays claims, the bond backs the state's requirement. New contractors sometimes think forming an LLC means they can carry less coverage. It does not. Carry the coverage and form the entity that fits your risk.
An LLC files through the Secretary of State, which ties into your UBI; a sole proprietor registers through the Department of Revenue. Either way you still need the bond, insurance, and Form F625-001. The choice mostly affects liability separation and how you are taxed, not whether you can register.
The free builder helps you choose a starting path. The paid roadmap goes deeper on filing details and consistency across forms.
Build My Free RoadmapPrimary Washington state agencies first, then supporting references. Figures verified July 2026 — always re-check current amounts before you file.