Ann Arbor Bylaws: Floodplains, Wetlands, Trees & Signs

Land Use and Zoning Michigan 4 Minutes Read · published March 01, 2026 Flag of Michigan

Ann Arbor, Michigan regulates development and alterations in floodplains, wetlands, historic trees, and signs through its municipal code and permitting systems. This guide summarizes where to find the controlling text, how enforcement typically works, what applications may be required, and practical steps to apply, report, or appeal. Where specific fines, fees, or form numbers are not published on the cited municipal pages, the text states that they are "not specified on the cited page" and points to the municipal code for the definitive language.[1]

Scope and Key Rules

Ann Arbor’s municipal code addresses land use, zoning, and protection of natural and historic resources; separate chapters and administrative rules can apply depending on whether the issue is a floodplain alteration, wetland disturbance, removal or work on a historic tree, or sign installation in the public right-of-way. Applicants should check the municipal code and consult Planning staff before starting work.

Review code language early to avoid delays.

Permits, Variances, and Review Processes

Typical authorizations or reviews that may apply include special land use or site plan review, floodplain development permits, wetland disturbance permits, historic district or heritage tree approvals, and sign permits. Some projects require review by Planning staff or a commission and may need a variance or conditional approval.

  • Permit applications for development and signs may be required prior to work.
  • Site plan or site review is often required for projects affecting floodplains or regulated wetlands.
  • Historic tree removals or work in historic districts may need review by historic preservation staff or commission.
Contact Planning and Development Services for early consultation on permits.

Penalties & Enforcement

Enforcement of floodplain, wetland, tree protection, and sign regulations is governed by the municipal code and implemented by City staff and enforcement officers. Specific penalty amounts and escalation procedures vary by code section; where the municipal code page does not state precise fines or penalties, this guide notes that the amount is "not specified on the cited page" and directs readers to the code text for the controlling language.[1]

  • Fine amounts: not specified on the cited page.
  • Escalation for repeat or continuing offences: not specified on the cited page.
  • Non-monetary sanctions: orders to restore, stop-work orders, removal of nonconforming signs, or required mitigation; court enforcement actions may also be used.
  • Enforcer and inspection: Planning and Development Services and designated code enforcement officers enforce zoning and land-use provisions; inspections and complaints follow municipal procedures.[1]
  • Complaint pathway: submit complaints or reports to Planning and Development Services or the City’s code enforcement contact (see Help and Support / Resources below).
If enforcement begins, request the citation or written order that cites the specific code section.

Appeals, Review and Time Limits

Appeals or requests for review are typically made to the designated city board or through the administrative appeals process defined in the municipal code. Time limits for appeals and for correcting violations are set in the code or in the enforcement notice; if a time limit is not explicitly stated on the cited page, it is "not specified on the cited page."[1]

  • Appeal routes: administrative appeal to the appropriate board or district court review as provided by ordinance.
  • Time limits: not specified on the cited page; consult the enforcement notice and municipal code for deadlines.
  • Defences and discretion: permits, variances, or documented reasonable excuse may be considered where the code allows discretion.

Applications & Forms

Where specific form names or numbers are published, those forms are listed on city permit web pages. If a named municipal form or fee schedule for floodplain, wetland, historic tree, or sign permits is not clearly published on the municipal code page, it is "not specified on the cited page." Applicants should contact Planning and Development Services to request the correct application and fee information and to learn submission methods.

Common Violations

  • Unauthorized grading or filling in a mapped floodplain or regulated wetland.
  • Removal or harmful pruning of historic or heritage trees without approval.
  • Installation of signs in the public right-of-way without a permit.
Stopping work immediately and contacting the city often reduces penalties and limits further damage.

Action Steps

  • Before work: consult the municipal code and request a pre-application meeting with Planning staff.
  • If you receive an enforcement notice: read the order, note appeal deadlines, and contact the listed department promptly.
  • To pay fines or submit mitigation plans: follow the payment and submission instructions in the enforcement notice or contact the city for official forms.

FAQ

Do I need a permit to remove a tree marked as historic or heritage?
The municipal code and preservation rules typically require approval before removing or significantly altering designated historic trees; contact Planning or historic preservation staff to confirm whether a permit or commission review is required.[1]
Can I build in a mapped floodplain on my property?
Building or grading in a floodplain generally requires a floodplain development permit and may require engineered plans and mitigation; check the municipal code for the controlling standards and contact Planning staff for application requirements.[1]
What rules apply to signs on private property facing a public street?
Sign regulations in the municipal code set size, placement, and permit requirements; temporary signs and right-of-way signs often have specific restrictions—consult the municipal code and the city’s sign permit guidance.[1]

How-To

  1. Identify the issue: confirm whether the feature is in a mapped floodplain, wetland, a designated historic tree, or involves a sign in the right-of-way.
  2. Review the municipal code text and any relevant site maps or zoning layers available from the city.[1]
  3. Contact Planning and Development Services for pre-application guidance and to request any required forms.
  4. Prepare application materials: site plans, mitigation or restoration plans, and permit fees as instructed by staff.
  5. Submit the application, respond to review comments, and follow inspection and compliance instructions until the permit is closed.

Key Takeaways

  • Early consultation with Planning staff prevents many enforcement issues.
  • Where the municipal code does not list fines or fees, the code or the enforcement notice should be consulted for the controlling amount.

Help and Support / Resources

  1. [1] City of Ann Arbor Municipal Code - Ann Arbor, MI

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