Resources: contractor startup libraries for all 50 states

Contractor resources for every state.

Choose your state for official sources and the same complete topic library Contractor Lane built for Washington. Then use the published guides to move from idea to first paid job.

Choose your state resource library

Every state starts with Washington's 86-topic library floor. States with additional official trade classifications include those extra guides too. Published Contractor Lane guides link directly. Research still under review stays clearly labeled.

Washington contractor guides

Business Structure

Sole Proprietor vs LLC for Washington Contractors: Which to ChooseSole proprietor vs LLC for your Washington contracting business: real differences in liability, cost, taxes, and paperwork, explained in plain English.
How to Form an LLC for a Contracting Business in WashingtonLearn how to form an LLC for your Washington contracting business: the Certificate of Formation cost, registered agent, annual report, and the traps.

Getting Found

How to Build a One-Page Website for Your Contracting BusinessYou do not need a fancy website to get hired. Here is exactly what one simple page needs, and why speed and a phone number beat design every time.
How to Set Up a Google Business Profile for ContractorsYour Google Business Profile is the highest-leverage free asset you have. Here is how verification, categories, and reviews actually work for contractors.
How to Get Found on Google and Bing as a New ContractorLearn local SEO for contractors: Google Business Profile, Bing Places, NAP consistency, and reviews that get a brand-new contracting business found and called.
Yard Signs and Vehicle Magnets for New Washington ContractorsA yard sign at your first job and a magnet on your truck are the cheapest marketing a new Washington contractor can run. What to put on them, and the registration-number rule most people miss.

Getting Started

Washington Contractor Requirements at a Glance (2026): The Sourced NumbersEvery key Washington contractor number in one place, each linked to its official source: registration fee, bond amounts, insurance minimums, annual report, penalties, and lien deadlines.
How to Start a Contracting Business in Washington State (Step-by-Step)Learn how to start a contracting business in Washington State with the real step-by-step order: name, structure, license, bond, insurance, and first job.
How to Register a Contracting Company in WashingtonWondering how to register a contracting company in Washington? Here is the real registration chain in order, the costs, and the traps that stall people.
How to Check if Your Contractor Business Name Is Available in WashingtonDoing a Washington contractor business name search? Here is how name availability actually works, plus the domain and Google checks most people skip.
How Much Does It Cost to Start a Contracting Business in WashingtonWondering what it really costs to start a contracting business in Washington? Here is the honest, itemized breakdown, and why most people launch for under $2,000.
How to Get Your First Contracting Job in WashingtonReady to land your first contracting job in Washington? Here is the real path: warm network, subcontracting, referrals, and your Google Business Profile.
Your First 30 Days as a New Washington ContractorA week-by-week look at the new contractor first 30 days in Washington, from structure and registration to your first job, and where most people stall.

Licensing

How to Get a Contractor License in Washington StateHere is how to get a contractor license in Washington State: the L&I registration, bond, insurance, fee, and application, laid out in the right order.
How to Look Up and Verify a Washington Contractor LicenseLook up any Washington contractor free in minutes: how to use L&I's Verify a Contractor tool, what an active registration, bond, and insurance should show, and the red flags to catch.
Do You Need a License for Handyman Work in Washington?Washington has no separate handyman license, and the $500 exemption is smaller than most think. Here is the real registration rule and the aggregate trap.

Pricing & Money

How to Price a Contracting Job Without Losing MoneyLearn how to price contracting jobs the right way: materials, labor, overhead, and markup, not just materials and time. Use a free roadmap to start in the right order.
How to Write an Estimate That Wins the JobLearn how to write a contractor estimate that wins the job: what to include, how to present it, and why speed to a number matters more than you think.
How to Know What to Charge: Break-Even for ContractorsUnderstand contractor break-even: fixed costs divided by average job price minus variable cost per job. Start with Contractor Lane before pricing mistakes pile up.
When a Washington Customer Does Not Pay: Your OptionsThe escalation ladder when a customer will not pay: invoice reminder, demand letter, mechanic's lien, and small claims, plus the strict WA lien deadlines that decide whether you keep your leverage.

Registration

What Is a UBI Number and How Do You Get One in WashingtonWhat is a UBI number in Washington and how do you get one? Here is what it does, how it is issued, and why every contractor step depends on it.
How to Get a Washington State Business License for ContractorsHere is how contractors get a Washington state business license: the Business Licensing Service, real costs of $50 plus $5 per trade name plus endorsement fees, and the UBI it issues.

Registration & Licensing

Washington Contractor Bond Explained: $30,000 vs $15,000Confused about the Washington contractor bond? Here is the real difference between the $30,000 general bond, the $15,000 specialty bond, and what you actually pay.
General Liability Insurance for Washington ContractorsWashington requires contractor liability insurance before you can register. Here is what the coverage minimums actually mean and how to get them right.
General Contractor vs Specialty Contractor in WashingtonNot sure if you should register as a general or specialty contractor in Washington? Here is the real difference, the bond gap, and how to decide correctly.
How to Get a Washington Contractor License With Bad CreditBad credit does not have to end your plans. Here is how bonding, judgments, and registration actually work for contractors with poor credit in Washington.

Taxes & Bookkeeping

Washington B&O Tax and Bookkeeping Basics for New ContractorsUnderstand Washington B&O tax for contractors: gross-receipts tax, no state income tax, and simple bookkeeping habits to start your business on solid ground.
Payroll and Job Costing for a Growing Trade ShopOnce you hire your first employee, payroll and job costing stop being optional. Real options and how to set up job costing that actually tells you which jobs make money.

Tools & Vendor Comparisons

Best Field Service & Dispatching Software for Contractors (2026)Jobber, Housecall Pro, Workiz, Service Fusion, and ServiceTitan compared honestly, with real July 2026 prices and the catch on each, plus which one fits a shop your size.
Bizee vs Northwest Registered Agent for Washington ContractorsBizee vs Northwest Registered Agent for a Washington contractor LLC: real prices as of July 2026, renewal costs, privacy differences, and the DIY option.
QuickBooks vs FreshBooks for a One-Truck Contracting ShopQuickBooks Online vs FreshBooks for a one-truck contractor: July 2026 prices, the client-limit trap, the accountant handoff, and which one actually fits.
Jobber vs Housecall Pro for a New Washington ContractorJobber vs Housecall Pro for a one-truck contractor: real July 2026 prices, the QuickBooks-sync price cliff both companies share, where Tradify fits, and which one actually fits.
Fleet and Fuel Card Management for Trade ContractorsWhen a business fuel/fleet card actually beats a regular card for a Washington contractor, what to look for, and why a one-truck operation should usually wait.
Jobsite and Backup Power for Washington ContractorsWhen a portable power station actually earns its place in your kit: running tools where there is no panel yet, working through an outage, and the honest gas-generator tradeoffs.

Trade Launch Guides

How to Start a Roofing Company in WashingtonLearn how to start a roofing company in Washington, from business setup to L&I contractor registration and bonding, plus the roofing-specific traps that stall new owners.
How to Start a Plumbing Company in WashingtonSee how to start a plumbing company in Washington, from business setup to L&I contractor registration, bonding, and the certified-plumber rules you cannot skip.
How to Start an Electrical Company in WashingtonFind out how to start an electrical company in Washington, including business setup, L&I contractor registration, bonding, and the separate electrical contractor license you also need.
How to Start an HVAC Company in WashingtonLearn how to start an HVAC company in Washington, from business setup to L&I contractor registration and bonding, plus which HVAC jobs trigger extra certifications.
How to Start a Painting Company in WashingtonSee how to start a painting company in Washington, from business setup to L&I contractor registration and bonding, with the low-cost path most new painters overlook.
How to Start a Landscaping Company in WashingtonLearn how to start a landscaping company in Washington, from business setup to L&I contractor registration and bonding, and the requirements that actually apply.
How to Start a Concrete Company in WashingtonLearn how to start a concrete company in Washington, from business setup to L&I contractor registration and bonding, and what the concrete trade actually requires.
How to Start a Drywall Company in WashingtonSee how to start a drywall company in Washington, from business setup to L&I contractor registration and bonding, and what the drywall trade actually requires.
How to Start a Siding Company in WashingtonLearn how to start a siding company in Washington, from business setup to L&I contractor registration and bonding, plus the traps that stall new siding contractors.
How to Start a Fencing Company in WashingtonSee how to start a fencing company in Washington, including business setup, L&I contractor registration, bonding, and the traps that stall new fence contractors.
How to Start a Carpentry Company in WashingtonLearn how to start a carpentry company in Washington, from business formation to L&I contractor registration and bonding, plus the traps that stall new carpenters.
How to Start a Masonry Company in WashingtonFind out how to start a masonry company in Washington, including business setup, L&I contractor registration, bonding, and the traps that stall new masons.
How to Start a Flooring Company in WashingtonLearn how to start a flooring company in Washington, from business setup to L&I contractor registration and bonding, plus the traps that stall new flooring installers.
How to Start a Tile Company in WashingtonSee how to start a tile company in Washington, including business setup, L&I contractor registration, bonding, and the traps that stall new tile and stone installers.
How to Start an Insulation Company in WashingtonLearn how to start an insulation company in Washington, from business setup to L&I contractor registration and bonding, plus the traps that stall new insulation contractors.
How to Start a Tree Service Company in WashingtonLearn how to start a tree service company in Washington, including business setup, L&I contractor registration, bonding, insurance, and the safety rules that matter.
How to Start a Demolition Company in WashingtonLearn how to start a demolition company in Washington, from business setup to L&I contractor registration and bonding, plus the disposal and hiring traps that stall new owners.
How to Start an Excavation Company in WashingtonLearn how to start an excavation company in Washington, from business setup to L&I contractor registration and bonding, plus the utility locate and equipment traps.
How to Start a Paving Company in WashingtonLearn how to start a paving company in Washington, from business setup to L&I contractor registration and bonding, plus the seasonal and equipment traps new owners hit.
How to Start a Fire Sprinkler Company in WashingtonLearn how to start a fire sprinkler company in Washington, from business setup to L&I contractor registration, bonding, and the fire-protection licensing this trade requires.
How to Start a Sewer and Drain Company in WashingtonLearn how to start a sewer and drain company in Washington, from business setup to L&I contractor registration and bonding, plus the utility and permitting traps.
How to Start a Steel Company in WashingtonLearn how to start a steel company in Washington, from business setup to L&I contractor registration and bonding, plus the rigging and welding traps new owners hit.
How to Start a Sign Company in WashingtonLearn how to start a sign company in Washington, from business setup to L&I contractor registration and bonding, plus when electrical sign work triggers extra rules.
How to Start a Cabinet Company in WashingtonLearn how to start a cabinet company in Washington, from business setup to L&I contractor registration and bonding, plus the traps new cabinet installers hit.
How to Start a Countertop Company in WashingtonLearn how to start a countertop company in Washington with the real launch order: name, structure, UBI, L&I bond, insurance, and landing your first job.
How to Start a Pool Company in WashingtonWant to start a pool company in Washington? Get the real step-by-step roadmap: structure, UBI, L&I bond, insurance, and landing your first pool or spa job.
How to Start a Waterproofing Company in WashingtonLearn how to start a waterproofing company in Washington with the real launch order: structure, UBI, L&I bond, insurance, and landing your first job.
How to Start a Well Drilling Company in WashingtonWant to start a well drilling company in Washington? Get the real launch roadmap: licensing, structure, UBI, L&I bond, insurance, and your first job.
How to Start a Pest Control Company in WashingtonLearn how to start a pest control company in Washington with the real launch order: licensing, structure, UBI, L&I bond, insurance, and first job.
How to Start a Glass Company in WashingtonWant to start a glass company in Washington? Get the real step-by-step roadmap: structure, UBI, L&I bond, insurance, and landing your first glazing job.
How to Start a Garage Door Company in WashingtonLearn how to start a garage door company in Washington with the real launch order: structure, UBI, L&I bond, insurance, and landing your first job.
How to Start a Septic Company in WashingtonWant to start a septic company in Washington? Get the real launch roadmap: certification, structure, UBI, L&I bond, insurance, and your first job.
How to Start a Foundation Company in WashingtonWant to start a foundation company in Washington? Here is the real roadmap, the foundation-specific traps that stall people, and the fastest way through.
How to Start a Solar Company in WashingtonWant to start a solar company in Washington? Here is the real roadmap, the electrical licensing trap that catches people, and the fastest way through.
How to Start a Home Inspection Business in WashingtonWant to start a home inspection business in Washington? Here is the real roadmap, the licensing catch most people miss, and the fastest way through.
How to Start a Manufactured Home Setup Company in WashingtonWant to start a manufactured home setup company in Washington? Here is the real roadmap, the installer certification trap, and the fastest way through.
How to Start a Low Voltage Company in WashingtonWant to start a low voltage company in Washington? Here is the real roadmap, the low-voltage electrical licensing catch, and the fastest way through.
How to Start a Fire Alarm Company in WashingtonWant to start a fire alarm company in Washington? Here is the real roadmap, the fire-alarm electrical licensing catch, and the fastest way through.
How to Start a Security Alarm Company in WashingtonWant to start a security alarm company in Washington? Here is the real roadmap, the alarm licensing catch, and the fastest way through.
How to Start an Elevator Company in WashingtonWant to start an elevator company in Washington? Here is the real roadmap, the elevator mechanic licensing catch, and the fastest way through.
How to Start an Awning Company in WashingtonWant to start an awning company in Washington? Here is the real roadmap, the awning-specific traps that stall people, and the fastest way to your first job.
How to Start a Chimney Company in WashingtonWant to start a chimney company in Washington? Here is the real roadmap, the chimney-specific traps that stall people, and the fastest way to your first job.
How to Start a Stucco Company in WashingtonWant to start a stucco company in Washington? Here is the real roadmap, the stucco-specific traps that stall people, and the fastest way to your first job.
How to Start a Deck Building Company in WashingtonWant to start a deck building company in Washington? Here is the real roadmap, the deck-specific traps that stall people, and the fastest way to your first job.
How to Start a Window and Door Company in WashingtonWant to start a window and door company in Washington? Here is the real roadmap, the trade-specific traps that stall people, and the fastest way to your first job.
How to Start a Gutter Company in WashingtonWant to start a gutter company in Washington? Here is the real roadmap, the gutter-specific traps that stall people, and the fastest way to your first job.
How to Start a Handyman Business in WashingtonWant to start a handyman business in Washington? Here is the real roadmap, the registration rules people get wrong, and the fastest way to your first job.
How to Start a Pressure Washing Business in WashingtonWant to start a pressure washing business in Washington? Here is the real roadmap, the classification traps that stall people, and the fastest way to your first job.
How to Start a Junk Removal Business in WashingtonLearn how to start a junk removal business in Washington, including business setup, when L&I contractor registration applies, and the traps that stall new haulers.
How to Start a Post-Construction Cleaning Business in WashingtonLearn how to start a post-construction cleaning business in Washington, from business licensing to insurance, plus the traps that stall new cleaning companies.
How to Start a Kitchen and Bath Remodeling Company in WashingtonLearn how to start a kitchen and bath remodeling company in Washington, from business setup to L&I contractor registration, bonding, and insurance.
How to Start a Remodeling Company in WashingtonLearn how to start a remodeling company in Washington, from business setup to L&I general contractor registration, bonding, and insurance requirements.
How to Start a Hardscape Company in WashingtonLearn how to start a hardscape company in Washington, including retaining walls, from business setup to L&I contractor registration, bonding, and insurance.
How to Start an Irrigation Company in WashingtonLearn how to start an irrigation company in Washington, from business setup to L&I contractor registration, bonding, and insurance requirements for sprinkler work.
How to Start an Artificial Turf Company in WashingtonLearn how to start an artificial turf company in Washington, from business setup to L&I contractor registration, bonding, and insurance requirements.
How to Start an Epoxy Flooring Company in WashingtonLearn how to start an epoxy flooring company in Washington, from business setup to L&I contractor registration, bonding, and insurance requirements.
How to Start a Cabinet Refacing Company in WashingtonLearn how to start a cabinet refacing company in Washington, from business setup to L&I contractor registration and bonding, plus the traps new owners hit.
How to Start a Basement Finishing Company in WashingtonLearn how to start a basement finishing company in Washington, from business setup to L&I contractor registration, bonding, and the multi-trade traps new owners hit.
How to Start a Pole Building Company in WashingtonLearn how to start a pole building company in Washington, from business setup to L&I contractor registration and bonding, plus the pole barn traps new owners hit.
How to Start a Sunroom Company in WashingtonLearn how to start a sunroom company in Washington, from business setup to L&I contractor registration and bonding, plus the patio enclosure traps new owners hit.
How to Start a Metal Building Company in WashingtonLearn how to start a metal building company in Washington, from business setup to L&I contractor registration and bonding, plus the erection-specific traps to avoid.
How to Start a Drain Cleaning Business in WashingtonLearn how to start a drain cleaning business in Washington, from business setup to L&I contractor registration and bonding, plus the plumbing-scope traps to avoid.
How to Start a Water Heater Installation Company in WashingtonLearn how to start a water heater installation company in Washington, from business setup to L&I contractor registration, bonding, and the plumbing certification you need.

Staying Compliant

Washington Excise Tax Due Dates: Monthly, Quarterly, and AnnualWhen your WA combined excise return is due on each filing frequency, why zero-revenue months still require a return, and how the late penalties stack.
The WA Annual Report: Due Date, Cost, and the Dissolution ClockYour annual report is due by the end of your anniversary month. Miss it and the state moves toward administrative dissolution — here is the timeline and the fix.
Every Filing Deadline a Washington Employer HasThe quarterly five-filing wave, the January 31 stack, and deposit schedules — the complete WA employer calendar in one place.
What Happens If You Advertise Without a Contractor License in WashingtonAdvertising or bidding while unregistered is a gross misdemeanor under RCW 18.27, a fresh charge every day, and you cannot sue to get paid. The full consequence, from the statute.
What Happens If You Don't File Your Washington Excise TaxSkip the return and DOR estimates it high, stacks penalties to 39%, files a tax warrant that acts like a judgment, liens your assets, and can revoke your business license.