Deck Permit in Milwaukee, Wisconsin
It depends
Sometimes, depending on the project
Before building a new deck or porch or rebuilding an existing one; plans must be reviewed and the permit issued first
By Mario Bailey, verified against official sources
Quick answer
Building or replacing a deck or porch in Milwaukee requires plan review and a building permit, and the plans are checked against both the Wisconsin Uniform Dwelling Code and the city's building and zoning codes. The exemption that makes this conditional is narrow and specific: DNS's list of home updates that do not require a permit covers repair or replacement of decking and floor boards on porches, decks and balconies, with an exception for historic houses and districts, so reboarding an existing deck is exempt while the structure itself is not. Plan review looks at beam sizes and spans, joist size and spacing, footing size and placement, guardrails on decks 24 inches or more above grade, and front and side setbacks; decks and stoops less than 12 inches above grade in a front yard typically need not meet the setbacks. A new service door or patio door cut for deck access must be included on the deck permit.
Who is pulling this permit?
Apply yourself
Hire it out
Before you sign, ask the contractor:
- Who pulls the permit, you or me, and is the permit fee included in the bid?
- Which inspections will this job need, and who meets the inspector on site?
- Is your contractor license active in this locality, and under which business name?
When a permit is usually needed
Before building a new deck or porch or rebuilding an existing one; plans must be reviewed and the permit issued first
What a deck permit costs in Milwaukee
How to apply in Milwaukee
A residential deck permit application is a set of construction documents that show what will be built and prove it meets the IRC deck provisions. In practice that means a scaled site plan locating the deck and its setbacks, plus deck plans and structural details covering the footings, posts, beams, joists, ledger, guards, and stairs.
What most deck permit applications include:
- A permit application identifying the work, the deck's size (square footage), and whether electrical work such as lights or receptacles is included, submitted for plan review before construction begins (IRC R106).
- A scaled site plan (for example 1/4 inch to 1 foot) showing the new deck's location relative to the house, its overall length and width, and dimensioned distances from the deck to all property lines and other structures so required setbacks can be verified (IRC R106.1.1).
- A deck plan drawn to scale showing overall dimensions and the framing layout: joist size, spacing, span, and species; beam size and span; post size and height; and footing or pier size and depth (IRC R507.4 posts, R507.5 beams, R507.6 joists, R507.3 footings).
- A section or side elevation with connection details showing the ledger attachment to the house band joist with flashing, the fastener or bolt schedule, joist hangers, post-to-beam and post-to-footing connections, and the required lateral load connection (IRC R507.9 ledger connection, R507.9.2 lateral connection, R507.2.4 flashing).
- Footing sizing derived from tributary area, the soil bearing value, and design loads per IRC Table R507.3.1, with footings shown bearing on undisturbed soil at the frost depth required by the jurisdiction (IRC R507.3).
- Details for the guards required where the walking surface is more than 30 inches above grade, and for the stairs and handrails, showing guard height and opening limits, stair riser and tread dimensions, and handrail location (IRC R312 guards, R311.7 stairs and handrails).
- For designs that fall outside the prescriptive R507 tables (for example multi-story or stacked decks, or a ledger attached to a cantilever), engineered and stamped structural plans are submitted in place of the prescriptive details (IRC R507.1 and R301).
General submittal guidance from IRC R106.1.1 (construction documents) and IRC R507 (exterior decks), 2021 IRC. Source. City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center sets the exact checklist for Milwaukee.
Where to apply in Milwaukee:
City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center
- Permit and Development Center, 809 N. Broadway, 1st Floor, Milwaukee, WI 53202
- Phone: 414-286-8210
- Email: DevelopmentCenterInfo@milwaukee.gov
Inspections and closing out your permit
Deck work is inspected in sequence as it is built: the footings before concrete is placed, the framing before the decking boards go down, and a final inspection once the deck is complete. Each stage checks the items that would be hidden or unsafe if missed.
- Footing or pier inspection: after the holes are dug and any forms or reinforcing are set but before concrete is placed, the inspector checks footing depth and diameter, a flat undisturbed bearing surface, and that the holes are free of water (IRC R109.1.1 foundation inspection; R507.3 footings).
- Framing inspection: after the deck is framed but before the decking conceals it, the inspector verifies the ledger attachment and its flashing, the fastener and bolt schedule, joist hangers and metal connectors, post-to-beam and post-to-footing connections, and the lateral load connection; call it before decking is installed (IRC R109.1.4 frame inspection; R507.9 ledger and flashing).
- Final inspection: after the deck is complete and before it is used, the inspector confirms guard height and opening limits (a 4 inch sphere must not pass, 4 3/8 inch at stairs), stair riser and tread dimensions, handrail height and graspability where there are 4 or more risers, stair landings, and required stair lighting (IRC R109.1.6 final inspection; R312 guards, R311.7 stairs and handrails).
Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the Milwaukee permit portal or by phone at 414-286-8210.
Inspection sequence from IRC R109 (inspections: R109.1.1 footing before concrete, R109.1.4 frame, R109.1.6 final), 2021 IRC. Source. An open permit left un-inspected can surface later in a title search or home sale.
Your Deck Permit checklist for Milwaukee
- Confirm the requirement. Sometimes, depending on the project. Usually needed: Before building a new deck or porch or rebuilding an existing one; plans must be reviewed and the permit issued first.
- Budget the fee. Billed as an alteration: "The fee for all alterations, remodeling, repairs and repairing fire damage to all buildings, structures and equipment shall be computed at 1.6% of the cost of construction", minimum $150 for one- and 2-family dwellings and accessory structures, plus the 1.6% IT and Training Surcharge and a $20 per permit processing fee. Plan examination for one- and 2-family alterations is $0.25 per square foot of the area to be altered with a $125 minimum (Plan Review and Permit Fees, As of January 1, 2025). The deck info sheet adds that "Fees are based on the cost of materials and labor to build the project, excluding the cost of HVAC, electrical, plumbing, furniture, equipment, and decorating cost.". Official fee schedule.
- Apply. A residential deck permit application is a set of construction documents that show what will be built and prove it meets the IRC deck provisions. In practice that means a scaled site plan locating the deck and its setbacks, plus deck plans and structural details covering the footings, posts, beams, joists, ledger, guards, and stairs. Start at the Milwaukee permit portal.
- Keep the office details handy. City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center. Phone: 414-286-8210. Address: Permit and Development Center, 809 N. Broadway, 1st Floor, Milwaukee, WI 53202.
- Plan for inspections. Deck work is inspected in sequence as it is built: the footings before concrete is placed, the framing before the decking boards go down, and a final inspection once the deck is complete. Each stage checks the items that would be hidden or unsafe if missed.
Compiled from the official sources on this page. Last checked .
Frequently asked questions
- Do you need a deck permit in Milwaukee?
- Building or replacing a deck or porch in Milwaukee requires plan review and a building permit, and the plans are checked against both the Wisconsin Uniform Dwelling Code and the city's building and zoning codes. The exemption that makes this conditional is narrow and specific: DNS's list of home updates that do not require a permit covers repair or replacement of decking and floor boards on porches, decks and balconies, with an exception for historic houses and districts, so reboarding an existing deck is exempt while the structure itself is not. Plan review looks at beam sizes and spans, joist size and spacing, footing size and placement, guardrails on decks 24 inches or more above grade, and front and side setbacks; decks and stoops less than 12 inches above grade in a front yard typically need not meet the setbacks. A new service door or patio door cut for deck access must be included on the deck permit. Always confirm with the City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center before starting.
- How much does a deck permit cost in Milwaukee?
- Billed as an alteration: "The fee for all alterations, remodeling, repairs and repairing fire damage to all buildings, structures and equipment shall be computed at 1.6% of the cost of construction", minimum $150 for one- and 2-family dwellings and accessory structures, plus the 1.6% IT and Training Surcharge and a $20 per permit processing fee. Plan examination for one- and 2-family alterations is $0.25 per square foot of the area to be altered with a $125 minimum (Plan Review and Permit Fees, As of January 1, 2025). The deck info sheet adds that "Fees are based on the cost of materials and labor to build the project, excluding the cost of HVAC, electrical, plumbing, furniture, equipment, and decorating cost.". See the official fee schedule for current amounts.
- Where do you apply for a deck permit in Milwaukee?
- You can apply through the Milwaukee permit portal or contact the City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center directly. The links are listed on this page.
- Can a homeowner pull a deck permit themselves in Milwaukee?
- Under Wisconsin law (Wis. Stat. 101.654(1)(a) and (1)(b); Wis. Admin. Code SPS 305.31(1), SPS 320.09(9)(a)2., 3. and 4.; Wis. Stat. 101.65(1m) and (1r); Wis. Stat. 101.862(4)(a); Wis. Stat. 145.06(4)(a)): A Wisconsin homeowner may pull the permit and do the work on their own dwelling. The general rule is that nobody may obtain a building permit for a one- or two-family dwelling without a DSPS dwelling contractor certification plus a dwelling contractor qualifier credential, but the statute exempts an owner of a dwelling who resides or will reside in the dwelling and who applies for a building permit to perform work on that dwelling. Neither the statute nor the implementing rule places any cap on how often that exemption may be used, and Wisconsin has no counterpart to Florida's one-year resale restriction. The trade-off is a disclosure: the permit issuer must have the owner sign a statement warning that if the owner hires a contractor who is not bonded or insured, the owner may be held liable for injury or property damage arising from the work and may be unable to collect damages from that contractor. Trade licensing carries its own homeowner carve-outs, both defeasible by local ordinance: a residential property owner may do electrical wiring on premises the owner owns and occupies as a residence, and a property owner may do plumbing work in a one-family building owned and occupied as the owner's home. Confirm how Milwaukee applies this before you apply.
From the Library
What else needs a permit in Milwaukee
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Electrical Permit | It depends | Not specified | Electrical permit fees are not reproduced in the Plan Review and Permit Fees schedule |
| Fence Permit | Permit required | Not specified | The Plan Review and Permit Fees schedule (As of January 1, 2025 |
| HVAC Permit | It depends | Not specified | HVAC Permit Fees, excerpted in the fee schedule from MCO 200-33-23: heating, incinerator... |
| Patio Permit | No permit needed | Not specified | No permit and therefore no DNS permit fee. |
| Plumbing Permit | It depends | Not specified | Plumbing permit fees are set by MCO 200-33 and are not reproduced in the Plan Review and... |
| Pool Permit | It depends | pool at least 15 feet by 3 feet in size or holding 3,965 gallons | The DNS Private Pool Instruction Sheet (soc 03/18/25) instructs applicants to "Submit a... |
| Roof Replacement Permit | It depends | Not specified | No permit fee for a one- or two-family re-roof, because no permit is required. |
| Shed Permit | It depends | detached tool or storage sheds located in the rear yard and at least three feet from the property lines | Under Structures Accessory to One-and 2-family Dwellings in the Plan Review and Permit... |
| Solar Permit | Permit required | Not specified | The Residential Solar Permit Process sheet (DNS soc 06/02/2021) states "Expedited solar... |
Deck Permit in other Wisconsin localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not Milwaukee documents; the office above sets the local rules.
Verified by a person against the sources above on , not confirmed with City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center. Rules change; confirm before you build. How we verify.
Last checked: Report an error on this page
Compare Deck Permit requirements across Wisconsin localities
Permit office
City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center
414-286-8210Permit portalCompare
Deck Permit across Wisconsin