Middleton, Wisconsin Building Permit Guide

For property in the City of Middleton, the city’s Building Inspection Department at City Hall, 7426 Hubbard Avenue (608-821-8370), issues building, electrical, plumbing and HVAC permits, reviews commercial plans under state authorization and inspects the work. Applications, zoning permits and inspection requests go through the city’s iWorQ portal. On the city’s 2025 fee list a new house pays a $150 base building fee plus 9 cents per square foot, and new inspection procedures took effect in mid-September 2026.

What work requires a building permit in Middleton?

The department’s permit page puts it broadly: most construction, remodeling, electrical, plumbing, HVAC and zoning-related projects need permits before work begins. Its forms and fee list show the work it permits.

Owner-occupants of single-family homes may do some work themselves, the department says, but otherwise it expects electrical, plumbing and HVAC work to be done and permitted by state-credentialed Wisconsin contractors (licensed electricians and plumbers, DSPS-registered HVAC businesses).

What Middleton decides and what the state holds

DSPS lists the City of Middleton as a delegated UDC municipality (list current as of 9/24/2026), so city staff review plans for new one- and two-family homes and inspect them; the Town of Middleton has its own separate delegation. The Uniform Dwelling Code and the commercial code are state codes; the city’s own Building, Electrical, Heating and Plumbing Codes are Chapters 11 to 14 of its municipal code. What the city adds is local: its fee schedule (Appendix A of the municipal code), zoning (Chapter 10), land division (Chapter 19), stormwater runoff (Chapter 26), erosion control (Chapter 28), an electrical license under Chapter 12 and its own inspection procedures.

Middleton building department: who handles permitting

The Building Inspection Department, which signs its forms as the Plan Review/Inspection Department, handles permits, plan review and inspections. Its Building Inspection and Community Services staff also enforce property maintenance, residential construction erosion control and snow and weed rules.

Planning & Community Development handles land divisions, rezonings, planned developments, conditional and special use permits, site plan review, variances and annexations, and staffs the Plan Commission and the Zoning Board of Appeals.

Middleton permit types and filing documents

The iWorQ portal has separate online applications for building, electrical, HVAC, plumbing and zoning permits. The city also posts the paper versions: a building permit application for new work or additions, a miscellaneous building permit application, building and plumbing plan review applications, trade permit forms, demolition, fire suppression and fire alarm, storm water runoff control and water tap permits.

Residential permits

Since mid-September 2026 the city sorts residential plans into three levels, each with its own list of required drawings:

• Level 1, minor projects: detached garages of 1,000 square feet or less, decks, porches, patio covers, additions under 500 square feet and minor structural changes. A cover sheet, a site plan with setbacks and easements, dimensioned plans and member, footing and ledger details.
• Level 2, additions and structural remodels: additions of 500 to 1,500 square feet, finished basements, attached garages, major renovations and structural roof changes. Adds design criteria (snow loads, frost depth, soil bearing), bracing details and energy compliance.
• Level 3, new one- and two-family homes: a Residential Design Data Cover Sheet naming the designer and the codes used, plus full architectural, structural and energy documents. The New Single Family Home Packet and the Erosion Control for Home Builders packet walk through the rest.

Building or remodeling a home here? Alliance handles residential permit applications, so the crew isn't waiting on the counter.

Commercial permits

The state has authorized Middleton to review commercial building, HVAC and plumbing plans locally, and the department says most reviews take about a month. Fire alarms, suppression systems and elevators may still need state review. Use the Building Plan Review Application or Plumbing Plan Review Application, the New Commercial Building Packet and the compliance statement; plans must show compliance with state codes and city ordinances.

For tenant improvements and new commercial builds, Alliance handles commercial building permits through issuance. More on this: commercial building permits explained.

What comes before the building permit

• Zoning permit. Filed in iWorQ. For a one- or two-family home it costs $300 for the house, $100 for additions such as garages and decks and $50 for sheds and fences.
• Plan Commission items. Site plan review ($200), conditional use ($500), rezoning of a single lot ($500) and planned development plans go through Planning & Community Development; appeals and variances cost $500.
• Land division. A certified survey map is $400 plus $55 per lot; plats are priced per acre. New homes also owe parkland fees.
• Stormwater and erosion control. A stormwater permit application is $250 under Chapter 26 and an erosion control plan application $250 under Chapter 28; new houses pay a separate residential erosion control fee on the building permit.
• Water service. New connections need a water tap permit; the city says it charges no special water or sewer hook-up fee.
• Floodplain. Middleton participates in the National Flood Insurance Program (community 550087, map effective September 17, 2014).

Middleton building-permit fees and plan review costs

The city’s official fee schedule is Appendix A of its municipal code, and the department’s posted sheet is dated September 1, 2020. The figures below come from the city’s 2025 New Housing Fee Report, prepared March 9, 2026, which lists the fees in force for 2025 and says Appendix A prevails if the two differ. New construction is priced on all floor levels, basements, attached garages, porches and enclosed roofed space; alterations are priced on cost.

Worked example. A new single-family house of 3,000 square feet across all areas pays $150 + (3,000 × $0.09) = $420 for the building permit and $50 + (3,000 × $0.05) = $200 for each of the electrical, plumbing and HVAC permits. Adding $150 plan review, $150 erosion control, the $45 seal and the $300 zoning permit brings the city permit total to $1,665, before parkland fees of $2,901 in lieu of land and $1,244 for park improvements where they apply.

Commercial plan review is priced by building area: $350 below 2,500 square feet up to $18,100 over 500,000 square feet for building plans, and $250 to $12,200 for HVAC plans; fire alarm and suppression reviews run from $130. The 2020 department sheet differs from the 2025 report on a few fire and solar items, so confirm those with the office. Starting work without a permit adds a penalty equal to the full permit fee.

The same report shows the city permitted 350 new dwelling units in 2025 and collected an average of $5,623.86 in fees per unit, a figure that counts all building permits and Plan Commission reviews.

Trade permits and who may pull them

Electrical, plumbing and HVAC permits are separate applications in iWorQ; the city’s page labels the electrical and plumbing ones as permits for licensed contractor work. City inspectors check rough and final stages for each trade.

Dwelling contractor credentials, plumber and electrician licenses and HVAC business registration come from the state (see Wisconsin rules). Ask the department whether the Chapter 12 license applies to your electrical contractor before you file.

How to apply for a Middleton building permit

Review, corrections and what causes delay

The new submittal rules say extra information may be required where needed to show code compliance, so drawings missing an item on their level’s list can be held for more. Commercial reviews generally take about one month. Like-for-like roofing, window and door jobs now leave the permit open until the notarized compliance affidavit is filed, and a contractor with more than three overdue affidavits cannot apply for new permits.

Middleton construction inspections and closeout

Request inspections in iWorQ (the city’s preferred method: search the permit number or address, open the permit and choose Request an Inspection), by email to buildinginspection@cityofmiddleton.us or by phone at 608-821-8370. Requests placed by 2:00 p.m. can be considered for the next day; the city does not give time slots, though you can ask for morning or afternoon. New homes must give the lot number and show the address or lot number clearly from the street.

• Footing and foundation before concrete or backfill, then under-slab work before the floor is poured.
• Framing before insulation and drywall.
• Electrical, plumbing and HVAC rough and final inspections.
• Final before occupancy or project completion.
• Optional non-structural visits: re-roof dry-in and final, window and door rough and final, water heater and HVAC final.

An approved permit and plans must be on site or the inspection fails. In an occupied home the contractor, the owner or an adult representing the owner must be present. A failed inspection costs $50, paid before the re-inspection is booked, and a second failure on the same trade brings a stop-work order. A certificate of occupancy under section 11.05.13 needs its own application, an Emergency Services Business Form and payment, and it will not issue while fees or code violations are outstanding.

Wisconsin building code

Wisconsin's Uniform Dwelling Code covers one- and two-family homes. Its Commercial Building Code covers public buildings, workplaces and buildings of three or more units. Local ordinances must conform to both. Wisconsin rules

Middleton permit search and official resources

Any permit can be looked up in the iWorQ portal by permit number or parcel address, which also shows its inspections. The city’s New Housing Fee Report page posts its annual statutory fee and affordability reports. For permit files the portal does not show, contact the Building Inspection Department at buildinginspection@cityofmiddleton.us.

• Middleton Building Inspections & Building Permits
• iWorQ Permit & Inspection Portal
• Residential Building Inspection SOP, effective September 2026 (PDF)
• Residential Plan Submittal Requirements (PDF)
• Roof affidavit (PDF)
• Windows and doors affidavit (PDF)
• Certificate of Occupancy checklist (PDF)
• Middleton Housing Fee Report 2025 (PDF)
• Department permit fee schedule, revised 9/1/2020 (PDF)
• Planning & Community Development
• DSPS UDC delegated agents list

Middleton building-permit FAQ

Who issues building permits in the City of Middleton?

The city’s Building Inspection Department at 7426 Hubbard Avenue (608-821-8370); the Town of Middleton has its own permit program.

How do I apply for a permit in Middleton?

Online in the iWorQ Permit & Inspection Portal, which has separate building, electrical, HVAC, plumbing and zoning applications.

Do I need a permit to replace my roof or windows in Middleton?

Yes; from mid-September 2026 like-for-like jobs also need a notarized workmanship and code compliance affidavit within a week of finishing.

How much is a building permit for a new house in Middleton?

On the 2025 fee list, $150 plus $0.09 per square foot, plus trade permits, $150 plan review, a $45 seal, erosion control and a $300 zoning permit.

How fast can I get an inspection?

Requests made by 2:00 p.m. can be considered for the next day; the city schedules by morning or afternoon, not exact times.

Does Middleton review commercial plans itself?

Yes, for building, HVAC and plumbing plans, usually in about a month; fire alarm, suppression and elevator systems may also need state review.

What happens if I fail an inspection?

You pay a $50 re-inspection fee before rebooking, and a second failure on the same trade results in a stop-work order.

Simplify Middleton permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Wisconsin. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Middleton permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.