Last researched: September 18, 2026. Chesapeake City has just replaced its zoning code. On September 15, 2026, the Town Council adopted Ordinance 2026-001, repealing and replacing the former Comprehensive Development Ordinance with a new Chesapeake City Zoning Ordinance and zoning map.
Homeowner takeaway: Do not rely on an older Chesapeake City zoning PDF or accessory-structure handout without checking it against the newly adopted September 2026 code. For an ADU project, confirm the new ordinance’s exact treatment of ADUs, then separately check Historic District, Critical Area, floodplain, impervious-surface and Planning Commission requirements.
Chesapeake City ADU planning snapshot
| Question | What we verified |
|---|---|
| New zoning code? | Yes. Ordinance 2026-001 was adopted September 15, 2026 and replaces the prior Comprehensive Development Ordinance. |
| Public hearing? | August 24, 2026, after introduction July 13. |
| Planning review? | Town Planning Commission administers zoning applications; applications must generally be submitted 7 days before the monthly meeting. |
| Historic District? | Historic District projects require Historic Commission review before Planning Commission review. |
| Critical Area / floodplain? | Town publishes a Critical Area map, FEMA flood maps and a floodplain ordinance. |
| Accessory-structure applications? | Town requires a plot plan with setbacks, dimensions, impervious surface and building lot coverage, plus elevation drawings for accessory structures. |
1. Chesapeake City’s zoning code changed three days before this guide was researched
The Town Council adopted Ordinance 2026-001 on September 15, 2026. The ordinance repeals and replaces the former Comprehensive Development Ordinance with regulations now known as the Chesapeake City Zoning Ordinance. It was introduced July 13 and heard publicly August 24.
This is unusually important for homeowners researching ADUs online: an older Town application, cached zoning PDF or third-party summary may describe the superseded code. Ask Town Hall for the September 15 adopted ordinance when a rule matters to your design.
2. Chesapeake City is not Cecil County zoning
Chesapeake City has its own Planning Commission, zoning ordinance and municipal review process. For property inside Town limits, do not automatically apply Cecil County’s accessory-apartment rules. If County zoning controls the parcel, use our Cecil County ADU Rules guide.
3. For ADUs, the newly adopted ordinance is the controlling starting point
Because Ordinance 2026-001 is brand new, this guide does not copy ADU dimensions from the superseded Comprehensive Development Ordinance and present them as current law. Ask Chesapeake City to identify the exact section of the adopted September 2026 zoning ordinance governing an accessory dwelling unit on your parcel.
Specifically confirm: eligible zoning district, internal/attached/detached treatment, maximum floor area, setbacks, parking, owner occupancy if applicable, and whether Planning Commission or another approval is required.
4. Planning Commission review is a real part of Chesapeake City development
The Town says Planning Commission business meetings are held on the first Wednesday of each month and zoning applications must be submitted to Town Hall at least 7 days before the meeting to be placed on the agenda.
Do not assume a zoning question can be resolved the day before a contractor wants to start. Build municipal review time into the project schedule.
5. Historic District properties have an extra approval sequence
Chesapeake City says projects on properties in the Historic District must be reviewed by the Historic Commission before Planning Commission review. The Town’s resident guidance says exterior changes in the South-side Historic District must follow Historic District guidelines.
For an attached or detached ADU, check this before finalizing windows, siding, roof form, massing or placement. A zoning-compliant footprint may still need historic-design changes.
6. Detached ADU? The Town wants more than a rough sketch
Chesapeake City’s accessory-structure zoning application requires a plot plan showing the entire lot, property lines, existing structures, streets, setbacks, dimensions and the proposed structure. It also requires square footage of existing and proposed impervious surface and building lot coverage, plus elevation drawings for accessory structures.
Although that form predates the September 2026 zoning replacement, it shows the level of site information the Town expects. Confirm the current application form and new-code dimensional standards before submission.
7. Critical Area and floodplain checks can materially change feasibility
The Town publishes both a Chesapeake Bay Critical Area map and FEMA flood maps, and maintains a separate floodplain-management ordinance. On a waterfront or flood-prone parcel, those overlays can matter as much as ordinary setbacks.
Before selecting a detached ADU location, ask Town Hall whether Critical Area, floodplain, elevation, impervious-surface or other environmental requirements affect the proposed footprint.
8. Tree removal can be another overlooked permit
Chesapeake City’s zoning application guidance says tree removals in Town require a separate Tree Removal Permit. If a backyard ADU footprint requires clearing a tree, check that issue before assuming the site is buildable.
9. Chesapeake City homeowner checklist
- Confirm the parcel is inside Chesapeake City.
- Use the zoning ordinance adopted September 15, 2026—not an older CDO copy.
- Identify the zoning district.
- Ask Town Hall for the exact new-code ADU section and approval route.
- Confirm maximum size and internal/attached/detached eligibility.
- For detached units, confirm setbacks, height, lot coverage and impervious-surface limits.
- Check Historic District status before exterior design.
- Check Critical Area and FEMA floodplain status.
- Determine whether tree removal requires a separate permit.
- Build Planning Commission timing into the project schedule.
- Confirm utilities and building-permit requirements.
- Only then purchase final plans or order a prefab unit.
Chesapeake City MD ADU FAQs
Did Chesapeake City change its zoning code in 2026?
Yes. Town Council adopted Ordinance 2026-001 on September 15, 2026, repealing and replacing the former Comprehensive Development Ordinance with a new Chesapeake City Zoning Ordinance.
Should I use an older Chesapeake City zoning PDF for my ADU?
Not without checking it against the September 15, 2026 adopted ordinance. Older materials may describe the superseded Comprehensive Development Ordinance.
Are Chesapeake City ADU rules the same as Cecil County?
No. Chesapeake City has its own zoning ordinance and Planning Commission. Cecil County rules apply where County zoning controls rather than inside Town limits.
Will my ADU need Planning Commission review?
Confirm the exact approval route under the new zoning ordinance. The Town’s general zoning process uses Planning Commission review, with applications generally due at least seven days before the monthly meeting.
What if my property is in Chesapeake City’s Historic District?
The Town says Historic District projects require Historic Commission approval before Planning Commission review. Check this before finalizing exterior ADU design.
What if my lot is in the Critical Area or floodplain?
Ask Town Hall for parcel-specific review. Chesapeake City publishes Critical Area and FEMA flood maps and maintains separate floodplain regulations that can affect siting and construction.
Do I need a tree-removal permit for an ADU site?
If the project requires removing a tree, check with the Town. Chesapeake City’s zoning-application guidance says tree removal requires a separate Tree Removal Permit.
Primary sources checked
- Chesapeake City — Ordinance 2026-001 Adoption Notice
- Chesapeake City — Planning Commission, Zoning Ordinance & Maps
- Chesapeake City — Accessory Structure Zoning Application
- Chesapeake City — Historic District / Planning Information
Maryland ADU Guide is an independent research publication, not the Town of Chesapeake City, Cecil County, a law firm, architect or contractor. The Town adopted a new zoning ordinance on September 15, 2026. Confirm the exact current ADU provisions and parcel-specific requirements before spending money on design or construction.
What to do next
Start by finding the office that reviews your property. A mailing city or a county guide does not establish your parcel’s authority.
- Find Who Reviews My Property.
- Obtain your parcel identifier, survey, floor plans and utility records.
- Ask the reviewing office which current rules, supporting documents and approvals apply.
- Continue to your planning workspace.
Enable JavaScript to prepare a downloadable next-step brief. Planning guidance is not permit approval.