Deck Permit in Madison, WI (2026)

Everything you need to know about getting a deck permit in Madison: fees, requirements, exemptions, and direct links to the Madison Building Inspection.

Verified from official Madison sources — Last checked April 2026

Quick Facts for Madison

Permit Fees

Most decks under 250 sq ft: $75 flat fee. Decks over 250 sq ft: fee calculated after plan approval. Zoning review fee: $0.03/sq ft (min $25).

Processing Time

Same-day permit possible if plans meet code. Incomplete site plans may add weeks.

Apply Online

Yes — via Madison Development Services Center

Building Code

Wisconsin Uniform Dwelling Code (UDC, updated June 1, 2022) / SPS 321.225 / DCA6 accepted

Contact: (608) 266-4551

Do You Need a Deck Permit in Madison?

Permit Exemption

Deck board replacement under $500 does not require a permit. New deck construction always requires a permit.

If your deck does NOT meet all exemption criteria, you must obtain a permit before construction. Building without a required permit can result in fines, stop-work orders, and required demolition.

Madison-Specific Deck Rules

Frost line: footings must be at least 48 inches deep
Decks under 3 ft height can extend to lot lines in most cases
Decks 3+ ft height must meet zoning district setback rules
Guardrails required if deck exceeds 2 ft above ground (min 3 ft high)
Zoning review appointment recommended for decks over 3 ft

How to Get a Deck Permit in Madison

1

Check if your deck needs a permit

Review the exemption criteria above. If your deck exceeds any threshold, a permit is required.

2

Prepare your plans

You'll need a site plan, deck dimensions, framing details, and footing specifications. Check Madison's specific documentation requirements.

3

Submit your application

Apply through Madison Development Services Center . Pay the permit fee at submission.

4

Build and schedule inspections

Once approved, post your permit visibly and schedule required inspections (typically footing, framing, and final).

Official Madison Resources

Madison Development Services Center — Apply for Permits Online Deck-Specific Requirements
Transparency note: The following items could not be verified from official city sources and should be confirmed directly: Fee for decks over 250 sq ft is calculated on case-by-case basis.

Estimate Your Deck Cost

Get an instant cost estimate for your deck project in Madison.

Deck Cost Calculator

Sources

https://www.cityofmadison.com/development-services-center/1-2-family-residential/additions/deckshttps://www.cityofmadison.com/development-services-center/fees/building-inspection-fees

Data verified April 2026. Fees, processing times, and requirements are subject to change. Always confirm current information with Madison's Madison Building Inspection.