Last researched: September 18, 2026. Brunswick is actively updating its zoning rules for accessory dwelling units. The City’s 2026 Planning Commission archive identifies ZTA 26-02 — Accessory Dwelling Units REVISED at the May 18 meeting, while City staff reports show Brunswick has been working toward Maryland’s October 2026 ADU compliance deadline.
Homeowner takeaway: Brunswick is a genuine municipal ADU jurisdiction, but the 2026 amendment is still something homeowners should verify in its final enacted form before buying plans. Ask the City which version of ZTA 26-02 currently controls your parcel, then confirm size, attached/detached treatment, parking, setbacks and utilities.
Brunswick ADU status at a glance
| Question | What we verified |
|---|---|
| Municipal zoning? | Yes. Brunswick maintains its own Planning & Zoning Department and zoning regulations. |
| 2026 ADU amendment? | Yes. Planning Commission records list ZTA 26-02 Accessory Dwelling Units REVISED for May 18, 2026. |
| Why now? | City staff reports identify review of Maryland’s ADU law and planning for ordinance adoption by October 2026. |
| Comprehensive Plan support? | Yes. Brunswick Forward calls for zoning changes to allow ADUs and other missing-middle housing. |
| Final permit numbers? | Confirm the enacted ZTA 26-02 text before relying on draft/revised Planning Commission material. |
1. Brunswick is not simply Frederick County zoning
Brunswick has its own municipal Planning & Zoning Department and zoning framework. For property inside City limits, do not automatically apply Frederick County ADU rules. If your property is outside Brunswick, use our Frederick County ADU Rules guide.
2. ZTA 26-02 is the key Brunswick document to verify
The City’s official 2026 Planning Commission archive lists “ZTA 26-02 Accessory Dwelling Units REVISED” for the May 18 meeting. That is strong evidence of a municipality-specific ADU zoning amendment rather than a generic County rule.
Because the archive identifies a revised zoning-text amendment rather than simply a codified final section, ask the City whether ZTA 26-02 has been enacted, whether later revisions exist, and what effective ordinance text should be used for an application filed today.
3. Brunswick has been planning for the state deadline
City staff reporting from late 2025 identifies continued review of the Maryland Accessory Dwelling Units Act and planning for ordinance adoption by October 2026. An August 2025 staff report also says the team was preparing ADU ordinance changes required before October 1.
For homeowners, that means older Brunswick zoning searches can become stale quickly. Use the latest City determination, not a cached pre-2026 zoning summary.
4. ADUs fit Brunswick’s broader housing strategy
Brunswick Forward, the City’s Comprehensive Plan, specifically calls for updating the Zoning Ordinance to allow accessory dwelling units and other missing-middle housing. This is useful context: the 2026 ADU amendment is part of a documented municipal housing strategy, not an isolated terminology change.
5. Do not design from Maryland’s 75% figure alone
Maryland’s statewide framework provides important boundaries for local ADU regulation, but the actual Brunswick project still depends on the final ZTA 26-02 language, zoning district, lot geometry, accessory-structure envelope, parking and utilities.
Use our Maryland 75% ADU Size Calculator as a planning benchmark. Before design, ask Brunswick what floor-area measurement and maximum are currently administered.
6. Detached ADU or garage conversion? Get the parcel envelope first
A detached ADU can be constrained by setbacks, height, lot coverage, easements and existing accessory structures even where the use itself is authorized. Likewise, an existing garage is not automatically approved residential space.
Bring a survey or accurate site plan to Planning & Zoning and ask which accessory-structure and ADU provisions apply under the final 2026 amendment before ordering a prefab or garage-conversion plan.
7. Parking deserves a current 2026 answer
Maryland’s newer law places conditions on additional local ADU parking mandates. Because Brunswick’s amendment is being developed in direct response to the state framework, do not add or widen a driveway based on an older local parking assumption. Ask whether ZTA 26-02 requires an additional space and whether any waiver procedure applies.
8. Brunswick homeowner checklist before spending money
- Confirm the parcel is inside Brunswick.
- Identify the zoning district.
- Ask whether ZTA 26-02 has been finally enacted and request the controlling text.
- Confirm maximum ADU size and measurement method.
- Confirm internal, attached and detached eligibility.
- For detached/garage projects, verify setbacks, height and lot coverage.
- Confirm parking and any waiver process.
- Ask about owner-occupancy or rental conditions in the final ordinance.
- Confirm water/sewer and utility requirements.
- Map zoning, building and occupancy approvals.
- Only then purchase plans or order a prefab unit.
Brunswick MD ADU FAQs
Does Brunswick have its own ADU zoning amendment?
Yes. The City’s 2026 Planning Commission archive lists ZTA 26-02 Accessory Dwelling Units REVISED for the May 18 meeting.
Are Brunswick ADU rules the same as Frederick County?
No. Brunswick maintains its own municipal zoning framework. Frederick County rules apply where County zoning controls rather than inside Brunswick.
Has ZTA 26-02 become final law?
The official Planning Commission archive identifies a revised ZTA 26-02. Confirm final City enactment, any later revisions and the effective ordinance text before relying on draft standards.
How big can a Brunswick ADU be?
Maryland’s state framework uses an up-to-75% ADU definition, but homeowners should confirm the final Brunswick amendment, floor-area measurement and parcel-specific constraints before designing.
Can I build a detached backyard ADU?
Confirm the final ZTA 26-02 treatment for your zoning district. A detached unit also has to fit applicable setbacks, height, lot coverage, easements and building requirements.
Can I convert my garage?
Do not assume an existing garage is automatically convertible. Ask Brunswick to confirm ADU authorization, legal siting and residential building-code requirements first.
Should I buy a prefab ADU before ZTA 26-02 is confirmed?
No. Obtain the controlling 2026 ordinance and a parcel-specific zoning/site check before committing to a prefab model.
Primary sources checked
- City of Brunswick — 2026 Planning Commission Agendas & Minutes
- City of Brunswick — Planning & Zoning Staff Report
- Brunswick Forward Comprehensive Plan
Maryland ADU Guide is an independent research publication, not the City of Brunswick, Frederick County, a law firm, architect or contractor. Confirm final ZTA 26-02 enactment and parcel-specific requirements with the City 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.