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Wisconsin sets no dollar limit: a state certification is what you need to pull a building permit for a one- or two-family home. Plumbing, electrical and HVAC: state license. Read from Wisconsin's own pages, checked November 6, 2026.
The limit: No dollar limit: a state certification is needed to pull a home building permit. No statewide dollar threshold and no general handyman license. A Dwelling Contractor certification (plus a Dwelling Contractor Qualifier) is needed only to obtain a building permit for a one- or two-family dwelling; an owner who lives or will live in the dwelling is exempt. Plumbing, electrical and HVAC work need their own state credentials at any value.
General contractors: State certification to pull home building permits. No dollar threshold. Anyone obtaining a building permit for a one- or two-family dwelling must hold a Dwelling Contractor (or Dwelling Contractor – Restricted) certification and hold or employ a Dwelling Contractor Qualifier. Owner-occupants exempt. No statewide general/commercial contractor license found.
Plumbing: State license. "No person may engage in or work at plumbing in the state unless licensed to do so by the department." (Wis. Stat. § 145.06(1)(a)); DSPS licenses master and journeyman plumbers; apprentices register.
Electrical: State license. DSPS licenses both electrical contractors and electricians (Wis. Stat. § 101.862); owner who occupies the premises as a residence is exempt unless local ordinance requires licensure.
HVAC: State license. Business registration, not an individual technician license: "No person, entity, or business may engage or offer to engage in installing or servicing heating, ventilating, or air conditioning equipment, unless...a registered HVAC contractor" (SPS 305.70(1)(a)); optional HVAC Qualifier certification (SPS 305.71).
Your license number: Electrical contractors must show the number on bids and contracts. None of these rules names invoices.
In the rule's words: “A person or entity that holds a electrical contractor license shall include his or her license number on all construction bids and contracts.” (Wis. Admin. Code SPS 305.41(4)(d) — applies to electrical contractors only; no such rule found for dwelling contractors, plumbers or HVAC contractors)
The board: Wisconsin Department of Safety and Professional Services (DSPS). As of November 6, 2026.
This is a summary of each state's own pages as of November 6, 2026, not legal advice. Rules change, and cities and counties add licenses of their own. Check with your state's board, linked on this page, before you rely on it.
Compare Wisconsin with every state's limit.
9 of Wisconsin's own pages, each quoted with its link:
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