Mowing and planting carry no state credential, but several landscaping lines do. Hardscape installers are listed among subcontractors who must register with the CRLB (R.I. Gen. Laws § 5-65-3(i)(12)), and patios, walkways, fencing, retaining walls, stone and masonry walls, and driveways are appurtenances covered by registration (§ 5-65-1(7)(i)) — $150 a year, $500,000 liability insurance, and a 5-hour course. Installing irrigation systems or contracting for them requires a DLT master irrigator license (§ 5-20-8); a journeyperson irrigator needs one year as a registered apprentice and a master needs two years as a journeyperson (§§ 5-20-17.1, 5-20-3.1). Farms, golf courses, and nurseries irrigating their own premises are exempt (§ 5-20-35).
Anyone who makes a business of pruning, trimming, spraying, or repairing fruit, shade, or ornamental trees must hold a DEM arborist license after passing an exam (§§ 2-19-1, 2-19-2; fee capped at $25), and DEM says all practitioners of arboriculture in Rhode Island must be licensed. Applying any pesticide or herbicide commercially — even general-use lawn products — requires a DEM commercial applicator license (§ 23-25-12).
The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.
Rhode Island has no county government, so the city or town building official issues permits and inspects under the state building code. Under R.I. Gen. Laws § 5-65-3(c) no city, town, or the state may issue a building permit to anyone required to register who lacks a valid registration, and the permit must list the contractor's registration number; § 5-65-3(g) makes CRLB registration exclusive — no city or town may require or issue its own contractor registration or license or charge a regulatory registration fee, though a general business license fee or tax on all businesses is still allowed.
The local offices section below names the exact permit desk for every Rhode Island county on file.
Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.
Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.
Irrigation work requires a DLT master irrigator license to contract ($75 application; $240 biennial renewal) and journeyperson irrigators renew for $72 (§§ 5-20-16, 5-20-23).
Commercial tree pruning, trimming, and spraying requires a DEM arborist license (exam; fee capped at $25 by § 2-19-2).
No Rhode Island statute reviewed requires a state credential for mowing, planting, or garden maintenance without pesticides.
A practical sequence for a new landscaping contractor in Rhode Island. Actual agency processing times are noted in the ledger above.
Each item names the issuing authority, cycle, and citation.
Statutory consequences with their citations — not estimates, not “commonly cited” guesses.
Failing to register, as adjudged in a final Board order, is a crime; a third or later violation is a felony.
After notice and hearing the Board may fine registered and unregistered contractors and suspend or revoke registrations.
A contractor not registered when bidding and continuously while working may not file a lien, file a Board claim, or sue for payment.
Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.
| County · City | Permit office | Portal |
|---|---|---|
| Providence County Providence (consolidated gov.) | City of Providence Department of Inspection and Standards (DIS) ↗ | Providence e-Permitting (ViewPoint Cloud) ↗ |
Every fact in this file was checked against these official sources on October 2026.
Pending verification: The CRLB's own regulations (440-RICR) — including its administrative fine schedule and any detail on which trades must register — were not read; this record relies on the statute and the CRLB application pages · Prices of the 5-hour pre-registration course and 2.5-hour continuing education course (set by CRLB-approved private providers, not by statute) · Actual arborist license fee and renewal term under DEM rule 250-RICR-70-00-1 (statute caps the fee at $25) · Initial master irrigator license fee (statute states the $75 application and $240 biennial renewal)
General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.
Store licenses, permits, policies, and renewal dates in one place.