Plumber Permits & Licenses in Dover, DE

Required for all LLCs. Annual Report is separate (see below). Fees current as of 2024.

All Delaware LLCs must file regardless of activity level.

Business owner or designated Responsible Party must hold Master Plumber license to operate plumbing business. Requires 4 years experience or approved apprenticeship + exam.

Required for individuals working under Master Plumber supervision. Business must ensure compliance for employees.

Requires 4 years experience under Master Plumber + exam. Business compliance required for employee licensing.

EPA RRP certification required for contractors disturbing lead paint. Plumbing often triggers this requirement.

Required if business uses DBA/trade name. No renewal required unless name changes.

Plumbers may be required to collect sales tax on materials and fixtures sold as part of service. Labor for repairs is generally not taxable, but installation of fixtures may be taxable depending on circumstances. See Del. Code Tit. 30 § 4402(1)(a).

Required for all employers paying wages to employees in Delaware. Includes withholding state income tax from employee paychecks.

Employers must register with the Division of Unemployment Insurance and pay quarterly unemployment insurance taxes. Rate varies by experience rating; new employers pay 2.4% on first $18,500 of wages per employee (as of 2024).

All LLCs in Delaware must pay an annual franchise tax of $300 regardless of income or activity. Due by June 1 each year. Failure to pay results in administrative dissolution.

All businesses earning income in Delaware must register for state income tax purposes. LLCs themselves do not pay income tax (pass-through to owners), but must file Form IT-01 if they have withholding obligations or are classified as corporations. Sole proprietors report on personal returns.

Not all municipalities impose a local tax. For example, Wilmington requires a Business Privilege License. Other towns may have similar requirements. Contact local government for specifics. See list at source URL.

Required for all businesses; plumbers must also comply with state plumbing license. See fee schedule at https://www.nccde.org/DocumentCenter/View/12345/Business-License-Fee-Schedule-PDF

Plumbing contractors specifically listed under service businesses. Apply online or in person.

Dover city has separate requirements; county license for unincorporated areas only.

Required for all commercial activities; municipalities like Rehoboth Beach have own licenses.

Restrictions on customer visits, signage, storage of materials/vehicles. Check specific zoning code (e.g., New Castle County Code Sec. 40.05.110).

Ensures property zoned for commercial/contractor use. Plumbers may face restrictions on vehicle storage.

Not required for pure service vehicles parked off-site.

Size, lighting, placement restrictions per zoning ordinance.

Required for new/renovated commercial spaces.

False alarm fees escalate after 3rd incident/year.

Required for all employers with one or more employees, including LLC members who work in the business. Sole proprietors without employees are exempt. Coverage must be obtained from a licensed insurer or through the state fund (Second Injury Fund).

Not legally mandated by Delaware for plumbers, but strongly recommended. Often required by commercial landlords, municipalities, or general contractors. May be necessary for bonding or licensing in some jurisdictions.

A $100,000 surety bond is required to obtain a Contractor’s License from the Delaware Division of Revenue. This applies to all contractors, including plumbers, who perform work exceeding $5,000 in value. The bond protects consumers against fraud or failure to perform work.

Required for all vehicles registered to the business. Delaware mandates minimum liability coverage: $25,000 bodily injury per person, $50,000 per accident, and $10,000 for property damage. Personal auto policies do not cover business use.

Not mandated by Delaware law for plumbers. However, it is strongly recommended to cover claims of negligence, faulty workmanship, or design errors. May be required by clients or general contractors on larger projects.

Not specifically mandated by Delaware. However, if the plumber sells and installs products, product liability exposure exists. Coverage is typically included in general liability policies but should be verified. Recommended for businesses selling equipment.

Not required for plumbers unless the business hosts events where alcohol is served. Not relevant to standard plumbing operations.

All LLCs are required to obtain an EIN from the IRS regardless of whether they have employees. This is used for federal tax purposes, including income, employment, and excise taxes.

A single-member LLC is treated as a disregarded entity and reports income on Schedule C of Form 1040. Multi-member LLCs file Form 1065 (partnership return). Profits are subject to self-employment tax.

Plumbers operating as LLC members must pay self-employment tax on net business income. Estimated taxes must be paid quarterly using Form 1040-ES.

Employers with employees must comply with OSHA’s General Duty Clause requiring a workplace free from recognized hazards. While plumbers face fewer industrial risks, hazards such as confined spaces, chemical exposure, and electrical risks must be addressed. OSHA does not enforce for sole proprietors without employees.

Required only if the business has 10 or more employees at any point during the year. Most small plumbing LLCs with fewer than 10 employees are exempt. Records must be maintained for injuries and illnesses using OSHA Form 300, 300-A, and 301.

Applies only if the plumbing business operates a physical location customers visit. Requirements include accessible entrances, restrooms, and service counters. Mobile or service-only (at customer sites) businesses are generally exempt from facility requirements.

Required for any firm performing renovations (including plumbing) that disturb more than 6 square feet of interior paint or 20 square feet of exterior paint in pre-1978 housing or child-occupied facilities. Firm must be EPA-certified, and at least one certified renovator must be on-site. Applies even if no lead is expected.

Requires truthful advertising, prohibits misrepresentation, and mandates clear contracts. Contractors must not require full payment upfront and must honor the 3-day right to cancel for door-to-door sales. Applies to all home improvement contractors, including plumbers.

All employers, including LLCs, must complete Form I-9 for every employee to verify identity and work authorization. Must be retained for 3 years after hire or 1 year after employment ends, whichever is later.

Applies to plumbing businesses with employees. Requires payment of federal minimum wage ($7.25/hour), overtime (1.5x regular rate after 40 hours/week), and proper recordkeeping. Exemptions may apply for independent contractors.

Requires eligible employers to provide up to 12 weeks of unpaid, job-protected leave for qualifying medical and family reasons. Most small plumbing LLCs do not meet the 50-employee threshold and are exempt.

A federal excise tax may apply if the business operates underground storage tanks for petroleum. Most plumbing businesses do not store fuel in this manner and are not subject. Only applies if tank capacity exceeds 500 gallons and is used for non-exempt purposes.

There is no federal occupational license required to operate as a plumber. Licensing is handled at the state or local level. This is a negative confirmation based on absence of federal mandate.

All Delaware LLCs must file an Annual Report and pay the franchise tax by June 1 each year. This is mandatory regardless of business activity. Payment and filing are done online via the Delaware Division of Corporations.

Plumbers in Delaware must hold a license issued by the Board. Licenses are renewed biennially. The renewal period opens October 1 and closes December 31 of odd-numbered years. Online renewal available via Delaware Professional Regulation online portal.

Licensed plumbers must complete 6 hours of board-approved continuing education every two years, including at least 1 hour in Delaware-specific plumbing code. Courses must be approved by the Delaware Board.

An EIN is required for tax reporting. While not renewed, ongoing compliance includes filing employment taxes. Single-member LLCs with no employees may use the owner’s SSN, but must obtain EIN if hiring.

Employers must register for withholding tax and file Form WH-1. Filing frequency is determined by the state based on payroll volume. Most small businesses file quarterly.

Self-employed individuals in an LLC must make estimated tax payments quarterly using Form 1040-ES. Applies to income and self-employment tax.

Individuals earning income through an LLC must make estimated state tax payments if not withheld through employment. Use Form 21ES.

Employers must display the OSHA Job Safety and Health Protection poster (OSHA 2206) in a conspicuous location. Available for free download from OSHA website.

Employers must display current Delaware labor law posters, including minimum wage, workers’ compensation, and discrimination policies. Available from the Delaware Department of Labor website.

Licensed plumbers must display their current license upon request and keep a copy available at their place of business or on job sites.

Delaware law requires employers with one or more employees to carry Workers’ Compensation insurance. General Liability is not state-mandated but often required by contracts or local authorities. Policies must be renewed annually.

Some Delaware municipalities require a local business license or trade permit. For example, Wilmington and New Castle County have separate registration requirements. Check with local government for specifics.

IRS recommends keeping employment tax records for at least 4 years. Business tax records should be retained for 3–7 years. Delaware follows federal guidelines. Records include invoices, tax filings, payroll, and contracts.