Licensed Landscape Contractor in Missouri: How to Verify Before You Hire

Missouri homeowners planning landscaping projects will find that the state takes a light regulatory approach to the trade. There is no statewide landscape contractor license in Missouri, but specific services within landscaping — and certain city jurisdictions — carry real compliance requirements. Here is what to know and verify before hiring a landscape contractor in Missouri.

Does Missouri require a license for landscape contractors?

Missouri does not have a statewide landscape contractor license. There is no state agency that issues a general landscape contractor credential. However, landscape contractors who apply pesticides or herbicides must hold a Commercial Pesticide Applicator license from the Missouri Department of Agriculture. This is a legally required credential for any company providing chemical lawn care or pest management services in Missouri.

The Missouri Department of Agriculture issues pesticide applicator licenses and requires licensed applicators to pass an exam demonstrating knowledge of pesticide safety, environmental protection, and proper application methods. The Ornamental and Turf category is the relevant certification for landscape contractors providing chemical services. Without this license, a company cannot legally apply pesticides or fertilizers to residential properties for compensation.

How do you verify a Missouri landscape contractor's pesticide license?

Ask the contractor for their Missouri Commercial Pesticide Applicator license number and category. Verify the license with the Missouri Department of Agriculture. A licensed applicator must directly supervise all pesticide applications performed by the company. If a different employee applies chemicals, that employee must also be a certified applicator or a licensed technician working under direct supervision.

Missouri pest control and lawn care companies are required to maintain their pesticide license records and make them available upon request. Any landscape contractor who offers chemical services but cannot produce a valid Missouri pesticide applicator license number should not be hired for that work.

Do St. Louis or Kansas City have local landscape contractor requirements?

St. Louis City, St. Louis County, Kansas City, and other Missouri municipalities have general contractor business registration requirements that may apply to landscape contractors. These are typically local business licenses or occupational licenses rather than trade-specific landscape credentials. Check with your city or county's business licensing office.

Kansas City contractors should check with the Kansas City Development Services Department. St. Louis City contractors should check with the St. Louis License Collector. Springfield, Columbia, Independence, and other cities have similar local business licensing offices. A reputable landscape contractor will have the appropriate local business license for the area where they operate.

When is a plumbing permit required for Missouri landscaping?

Irrigation systems connecting to the potable water supply in Missouri require a backflow prevention device to comply with the Missouri Plumbing Code. In most Missouri municipalities, installation of this backflow device requires a permit and must be performed by or under the supervision of a licensed plumber. Ask your landscape contractor whether they will install the backflow device and confirm whether a plumbing permit is required in your municipality.

St. Louis County, Kansas City, and most Missouri cities enforce backflow prevention requirements strictly because contamination of the public water supply is a serious public health issue. A landscape company that offers to install an irrigation system "without a permit" is taking a risk with your water supply safety.

What insurance should Missouri homeowners require?

With no statewide landscape contractor license, insurance is your primary protection. Require at least $300,000 in general liability insurance per occurrence. This covers property damage, including damage to underground utilities, neighboring properties, or your home. Workers' compensation is required for contractors with employees in Missouri.

Request a Certificate of Insurance before any work begins. Call the insurer to confirm the policy is active. Ask to be listed as an additional insured for the duration of the project. Missouri has historically had issues with unlicensed and uninsured contractors, particularly for post-storm landscape repair work. Verifying insurance before the first shovel goes in the ground is non-negotiable.

What steps protect Missouri homeowners most effectively?

Verify pesticide applicator license status with the Missouri Department of Agriculture (for chemical services), check local business registration, require adequate insurance, and use a detailed written contract. Verify business registration with the Missouri Secretary of State at sos.mo.gov. Ask for at least three references and verify them. Get a written contract specifying scope, materials, plants (species and sizes), timeline, payment milestones, and a warranty for plant materials.

Use CheckLicensed.com to verify pesticide applicator credentials and business registration status before hiring any Missouri landscape contractor. Missouri's lack of a statewide license makes the verification steps you take yourself more important, not less.