Who licenses what in Wisconsin
| Work | DSPS credential | What it means |
|---|---|---|
| Pulling building permits for one- and two-family homes | Dwelling Contractor (business) + Dwelling Contractor Qualifier (person) | The business is certified to obtain permits; proof of financial responsibility on file |
| Electrical | Electrical Contractor; Master, Journeyman (including Residential) and Registered electricians | State electrical credentials |
| Plumbing | Master Plumber, Journeyman Plumber (and restricted appliance and service versions) | State plumbing licenses |
| Heating and air conditioning | HVAC Contractor, HVAC Qualifier | State HVAC credentials |
Credential names are from DSPS's A–Z professions list, read 25 October 2026. One- and two-family homes in Wisconsin are built under the statewide Uniform Dwelling Code, and the Dwelling Contractor credential is what lets a business take out permits under it.
The Dwelling Contractor's financial requirement
| Option | Minimum |
|---|---|
| Surety bond | $25,000, from a surety authorized in Wisconsin |
| General liability insurance | $250,000 per occurrence |
DSPS says a Dwelling Contractor "must have" one of the two (DSPS), and renewal requires uploading up-to-date proof. The credential has no continuing education. We found no state homeowner recovery fund on DSPS's pages, so the bond or insurance is the backstop.
How to look a contractor up, step by step
- Ask the builder or remodeler for the Dwelling Contractor credential number, and the name of its Dwelling Contractor Qualifier.
- Search both in DSPS's License Lookup. Our fetcher could not open the lookup, so we cannot describe its fields; check the credential is active and in the firm's name.
- Search the electrician's, plumber's and HVAC contractor's credentials the same way. A remodeler's Dwelling Contractor credential does not cover wiring or plumbing.
- Ask for the bond or insurance certificate and check it meets the minimum above.
- In Madison, look up the address's permits in the city's Accela portal, as the Madison building permit search guide shows; for Milwaukee see the Milwaukee building permit search.
Our permit data in Wisconsin
| Place | Permits | Period | Largest kinds of work |
|---|---|---|---|
| Madison | 47,076 | Oct 2024 – Sep 2026 | roofing 10,858; plumbing 10,392; HVAC 7,927; electrical 6,326 |
| Milwaukee | 3,079 | Jun 2024 – May 2026 | remodel 1,215; new homes 157 |
These are permit counts, not contractor rankings. Milwaukee publishes only building alteration and new-construction permits as open data, so its trade permits are missing. Madison's trade rules: roofing, plumbing and HVAC permits.
Red flags on a Wisconsin job
- A builder or remodeler who asks you to pull the building permit because they have no Dwelling Contractor credential.
- A Dwelling Contractor credential whose qualifier no longer works for the firm.
- A bond under $25,000 or insurance under $250,000 per occurrence.
- An electrician or plumber with no DSPS credential.
How we know this
Credential names, the Dwelling Contractor definition and the bond and insurance minimums are quoted from DSPS's Dwelling Contractor page and A–Z professions list, and the License Lookup is linked from the DSPS home page, read 25 October 2026; our fetcher could not open LicensE itself. The plumbing exemption is quoted from Wis. Stat. § 145.06. Counts come from each city's public permit file, read 19 October 2026; we have not matched Wisconsin contractor names to license records.
Numbers come from public permit records in 57 cities, data through October 19, 2026. Nobody paid to be on this page and nobody can.
Questions
- Does Wisconsin license home builders and remodelers?
Through the Dwelling Contractor credential. DSPS issues it to "the owner, partner, or chief executive of a contracting business seeking certification to obtain building permits for one- and two-family dwellings", and the business must also have a credentialed Dwelling Contractor Qualifier.
- What insurance must a Wisconsin dwelling contractor have?
Either a surety bond of at least $25,000 or general liability insurance of at least $250,000 per occurrence, uploaded to DSPS at every renewal as proof of financial responsibility.
- Where do I look up a Wisconsin contractor's license?
On DSPS's LicensE system at license.wi.gov/s/license-lookup, linked from the DSPS home page. It covers dwelling contractors, electricians, plumbers and HVAC credentials.
- Can a Wisconsin homeowner do their own plumbing?
Under state law, yes in a one-family building they own and live in. Wis. Stat. § 145.06(4) exempts "Plumbing work done by a property owner in a one-family building owned and occupied by him or her", "except where such license is required by local ordinance".
Build your own list
Pick your city and the kind of work. Every firm with a permit on record, sorted by what you value.
Related guides
- Albuquerque contractor license lookup: the CID license, its classification and the City permits
- Ames contractor license lookup: Iowa registration, electrical and PMSB licenses, and the City permits
- Anaheim contractor license lookup: CSLB classifications, the City's permit report and what it shows
- Arlington, VA contractor license lookup: DPOR class and specialty, the County permit search, and what the permits show
- Dwelling Contractor (DC) — Wisconsin Department of Safety and Professional Services (2026-10-25)
- Dwelling Contractor Qualifier (DCQ) — Wisconsin DSPS (2026-10-25)
- Wisconsin Department of Safety and Professional Services — home (2026-10-25)
- One- & Two-Family (Uniform Dwelling Code) — Wisconsin DSPS (2026-10-25)
- License Lookup — Wisconsin DSPS LicensE (2026-10-25)
- Wis. Stat. § 145.06 — Wisconsin State Legislature (2026-10-24)
- City of Madison Licenses & Permit Records (Accela Citizen Access) (2026-10-24)