How to Start a Cannabis Grow Operation: Licensing, Build-Out and Costs (2026)

By James Buddsey · Updated October 30, 2026

To start a cannabis grow operation legally, you need a state producer or cultivation license first, then a compliant facility with controlled climate, lighting, security and seed-to-sale tracking, plus enough capital to survive a year or more before steady revenue. In many states, including Washington and Oregon, the hardest step is the license itself, because new grower licenses are capped or not being issued.

This guide covers the licensed, commercial side of cultivation: licensing, the facility, the equipment, the compliance work and the costs. If you want to grow a few plants at home where that is legal, read our beginner’s guide to growing marijuana instead. Nothing here is legal or tax advice; a commercial grow needs a cannabis attorney and an accountant from day one.

Commercial Grow at a Glance

Step 1: Understand the Licensing Reality

Every legal market requires a state license to grow cannabis for sale, and most also require local approval. Rules differ widely, so start with your state regulator, not with equipment catalogs.

Washington

Washington licenses “cannabis producers” through the Liquor and Cannabis Board. Under WAC 314-55-075, producer licenses come in three tiers by premises size: Tier 1 under 4,000 square feet, Tier 2 from 4,000 to 10,000 square feet, and Tier 3 from 10,000 to 30,000 square feet. The application fee is $250 and the annual license fee is $1,781. The catch is in the same rule: the application window for producer licenses is closed, and the LCB reopens it only when it decides to. In practice, new entrants usually buy into or acquire an existing license, which requires LCB approval of every new owner. No single entity and its principals may hold an interest in more than three producer licenses.

Oregon

Oregon producers are licensed by the Oregon Liquor and Cannabis Commission. After years of oversupply, the state paused new license applications, and in 2024 the Legislature passed House Bill 4121, which ties the number of licenses to population thresholds by license type. In fall 2026 the OLCC began rulemaking to reopen a limited number of wholesale licenses where counts have fallen below those thresholds; check the OLCC rules page before assuming any producer window is open. See our Oregon marijuana laws guide for the consumer side.

Other states

Newer markets often run competitive application rounds, lotteries or social equity programs, and some cap licenses outright. Expect background checks on every owner, proof of funds, a security plan, an operating plan and a site that meets zoning and setback rules before the state will even score your application.

Step 2: Build the Team and the Business Plan

A commercial grow is a farm, a factory and a regulated business at once. Most successful operations bring in these roles early:

• Cannabis attorney: licensing, entity structure, leases, and state compliance.
• Accountant with cannabis clients: federal tax is the biggest financial trap (see Step 5).
• Head grower or horticulturist: genetics, cultivation schedule, integrated pest management.
• Engineer or experienced grow-room designer: HVAC, electrical load and water.
• Compliance and security lead: tracking, cameras, inventory audits and inspections.

The business plan should answer one question honestly: who buys your flower, and at what price? Producers in Washington and Oregon sell only to licensed processors and retailers, and wholesale prices in mature Northwest markets have been low for years.

Step 3: Choose Indoor, Greenhouse or Outdoor

• Indoor: full control over light, temperature and humidity, several harvests a year and consistent quality, at the highest build-out and power cost.
• Greenhouse or mixed-light: sunlight plus supplemental lighting and light-deprivation covers. Lower energy use than indoor, more control than outdoor.
• Outdoor: the cheapest per pound to produce, usually one harvest a year, and exposed to weather, mold and wildfire smoke, which are real risks in the Northwest.

Step 4: Facility Build-Out: Climate, Light and Water

Climate control is where most new grows struggle. Flowering cannabis gives off large amounts of water through transpiration, and high humidity late in flower invites bud rot and powdery mildew. A commercial room needs:

• HVAC sized for the lighting heat load, not just the room’s square footage.
• Dedicated commercial dehumidifiers to hold humidity down through flower and drying.
• Air movement and filtration, including carbon filtration for odor control, which many local permits require.
• Lighting: LED fixtures now dominate new builds because they put out less heat per unit of light than older HPS lamps, which reduces the cooling load. Our grow light comparison explains LED, HPS and CMH.
• Irrigation and fertigation, with a plan for runoff and wastewater that meets local rules.
• Drying and curing rooms with their own climate control. Rushed drying ruins good harvests.
• Electrical service large enough for lights and HVAC. Utility upgrades can take months and add serious cost.

Use licensed electricians and mechanical contractors, get permits, and plan for fire code inspections. Never improvise extraction or solvent work in a grow facility; that requires a separate processor license and engineered equipment.

Step 5: Compliance and Taxes

• Seed-to-sale tracking: every plant and package is tracked in the state system from clone to sale.
• Security: camera coverage, alarm systems, restricted access and visitor logs are standard license conditions.
• Pesticides and testing: only approved inputs, and product must pass state lab testing before retail sale.
• Waste: plant waste must be rendered unusable before disposal under state rules.
• Federal tax: Section 280E of the tax code bars businesses trafficking in Schedule I or II drugs from deducting ordinary business expenses. In April 2026 the Justice Department moved state-licensed medical marijuana to Schedule III, but adult-use cannabis stayed in Schedule I. See our federal marijuana law guide and get an accountant to model your tax exposure.

Step 6: Budget Realistically

Costs depend on state, size and method, so treat any single number online with suspicion. The big buckets are: license acquisition or application costs, real estate, build-out (HVAC, electrical, lighting, security), genetics, payroll, utilities, testing, insurance and professional fees. Banking is limited because cannabis is still federally illegal for adult use, so many operators rely on private capital rather than conventional loans. Plan to carry costs for at least one full growing cycle, plus drying, curing and testing, before your first wholesale check arrives.

Starting a Cannabis Grow Operation FAQ

For more on the business and policy side, see our cannabis laws hub and Washington marijuana laws guide.

For adults 21+ in legal states. General information, not legal, tax or medical advice.