Last researched: September 19, 2026. Laytonsville is actively updating its zoning ordinance for Maryland’s new accessory dwelling unit requirements. The Town Council held a formal public hearing on September 1, 2026 on Draft Ordinance 03-26, which is specifically described as an amendment to conform the Town zoning ordinance to State of Maryland statutory requirements for accessory dwelling units.
Important status: as of this review, the Town’s current public materials still describe Ordinance 03-26 as a draft. The September 1 agenda included discussion and possible action after the hearing, but the approved September minutes are not yet posted because Laytonsville generally posts meeting minutes only after later Council approval. Homeowners should ask Town Hall whether Ordinance 03-26 has since been adopted and, if so, obtain the final signed text.
Laytonsville ADU planning snapshot
| Question | What we verified |
|---|---|
| 2026 ADU ordinance | Draft Ordinance 03-26, prepared to conform the Town zoning ordinance to Maryland’s ADU requirements. |
| Public hearing | September 1, 2026 at 7:30 PM via Zoom. |
| Planning Commission review | August 12, 2026 agenda included discussion of the draft ADU compliance ordinance and a vote. |
| Historic District Commission review | August 26/27 HDC agenda included discussion of the ADU compliance ordinance draft. |
| Current older zoning concept | Maryland Planning’s ADU inventory documents an older Laytonsville “accessory apartment” framework covering attached/internal units and separate existing accessory structures. |
| Older district treatment | Maryland Planning documents accessory apartments as permitted in Agricultural and Residential Historic and specially regulated in R-1 through R-4. |
| Accessory-structure setback benchmark | Maryland Planning’s setback comparison for Laytonsville cites a 5-ft minimum from adjoining property lines for accessory structures in side/rear yards. |
| State size framework | Maryland allows ADUs up to 75% of the primary single-family detached dwelling, and covered jurisdictions may not impose a lower maximum. |
| State parking framework | Additional off-street ADU parking requires the state-required parking study and a waiver process. |
Draft Ordinance 03-26 received a formal public hearing on September 1
Laytonsville’s September 1 Town Council agenda says the meeting opened with a public hearing on Draft Ordinance 03-26, described as amending the Town’s zoning ordinance to conform to Maryland’s statutory ADU requirements.
After public testimony, the regular meeting agenda included two follow-up items:
- a Council decision on whether to close the hearing record; and
- discussion and action on Draft Ordinance 03-26.
That means the ordinance had reached a formal legislative stage by September 1, not merely an informal staff discussion.
Planning Commission reviewed the ADU ordinance before the hearing
The Town’s August 12 Planning Commission agenda specifically included “Discussion of Draft Accessory Dwelling Unit Compliance Ordinance and Vote.”
The Town also posted a version of the draft with proposed Planning Commission amendments dated August 26.
Because the final Council action after the September hearing is not yet clearly published in approved minutes, this guide does not assume every Planning Commission amendment became law.
Historic District review is part of Laytonsville’s ADU discussion
Laytonsville has a Historic District Commission, and the August 26/27 HDC agenda included a specific item on the Accessory Dwelling Unit compliance ordinance draft.
That is important for homeowners in the historic area because a zoning-compliant ADU can still involve a separate historic-preservation review when exterior changes are proposed.
Before finalizing an addition, detached cottage, garage conversion or new exterior entrance, ask whether the property is within the Historic District and whether an HDC work permit or other approval is required.
Laytonsville already had an older accessory-apartment concept
Maryland Planning’s statewide ADU ordinance inventory documents Laytonsville’s pre-HB 1466 zoning code as already recognizing an accessory apartment.
The older definition described a second dwelling unit with a separate entrance that could be:
- part of an existing one-family detached dwelling; or
- located in a separate existing accessory structure on the same lot.
The unit had to provide cooking, eating, sanitation and sleeping facilities, remain subordinate to the main dwelling, and the main dwelling had to be owner-occupied under the older framework.
Older district treatment was not uniform across town
Maryland Planning’s inventory documents the older Laytonsville accessory-apartment use as:
- permitted in Agricultural and Residential Historic; and
- subject to special regulation in R-1, R-2, R-3 and R-4.
That older district-by-district treatment is exactly the type of framework Maryland’s 2025 law may require the Town to simplify or expand.
For a current application, ask the Town whether Draft Ordinance 03-26 changes the districts, approval type or owner-occupancy rules.
Maryland’s 75% rule is one key test of the final Laytonsville ordinance
Maryland’s current ADU law defines an ADU as a secondary dwelling unit on the same lot as a primary single-family detached dwelling and allows the unit to be up to 75% of the size of the primary dwelling.
The Maryland Department of Planning says covered jurisdictions may not impose a lower local maximum.
When Laytonsville’s final ordinance is available, homeowners should verify:
- how the Town measures the primary dwelling;
- whether internal, attached and detached ADUs use the same calculation;
- whether the ordinance contains an absolute square-foot cap; and
- whether any local maximum complies with Maryland’s 75% framework.
Use our Maryland ADU size guide to understand the statewide rule, then confirm Laytonsville’s final local measurement method.
A 5-ft accessory-structure setback is an important benchmark
Maryland Planning’s published setback comparison cites Laytonsville’s older zoning code as allowing accessory structures in side or rear yards while keeping them at least 5 feet from an adjoining property line.
Maryland’s current ADU law says local side and rear ADU setbacks may not be more restrictive than existing accessory-structure setbacks.
That makes the 5-foot benchmark important when reviewing the final Draft Ordinance 03-26 language for detached ADUs.
Lot configuration, historic review, easements, utilities, fire access and other standards can still affect actual placement.
Parking must follow Maryland’s study-and-waiver process
Maryland law now limits additional off-street parking requirements imposed specifically on ADUs. A jurisdiction must complete the required parking study before imposing extra ADU parking and must provide a waiver process.
Because the final Laytonsville ordinance is not yet publicly verifiable in approved text, this guide does not claim whether the final law requires zero, one or more additional spaces.
Ask Town Hall:
- whether additional ADU parking is required;
- whether the Town completed a parking study;
- how existing/on-street parking is treated; and
- what waiver process is available.
The September minutes are not yet a reliable final-status source
Laytonsville’s Town Council minutes page explains that minutes are posted only after they are approved at a later Council meeting, a process that typically takes 30 to 45 days.
As of September 19, approved September 1 minutes are not yet posted. That means a homeowner should not infer final action merely from the hearing agenda.
Town Hall can provide the most current status of Ordinance 03-26 before approved minutes appear online.
The next regular Town Council meeting is October 6
Laytonsville’s current public-notices page lists the next regular Town Council meeting for October 6, 2026 at 7:30 PM.
If Ordinance 03-26 was deferred after the September 1 hearing, that meeting may be relevant to the final implementation timeline. Check the posted agenda when it becomes available.
What to ask Laytonsville before paying for ADU plans
- Was Ordinance 03-26 adopted after the September 1 hearing?
- What is the final effective date?
- Can I get the final signed ordinance?
- Which zoning districts now allow ADUs?
- Are internal, attached and detached ADUs all allowed?
- What maximum size and measurement method apply?
- Is owner occupancy required?
- What side and rear setbacks apply to detached ADUs?
- Does the older 5-ft accessory-structure setback remain the benchmark?
- What parking requirement and waiver process apply?
- Has the Town completed the required parking study?
- Does the property fall within the Historic District?
- Is Historic District Commission review required?
- Can an existing garage or accessory structure be converted?
- What zoning, building, water, sewer, electrical and plumbing approvals are required?
Laytonsville homeowner checklist
- Confirm the property is inside Laytonsville municipal limits.
- Check the current zoning district.
- Ask Town Hall for the final status of Ordinance 03-26.
- Obtain the final signed ordinance before choosing a legal ADU size.
- Determine whether the project will be internal, attached or detached.
- Verify the final size calculation.
- For a detached ADU, compare final setbacks with the older 5-ft accessory-structure benchmark.
- Check Historic District status before exterior design.
- Confirm parking and any waiver process.
- Prepare a survey or site plan.
- Confirm all Town and Montgomery County building/trade approvals.
- Do not make a non-refundable prefab or construction commitment until the final ordinance is confirmed.
Laytonsville MD ADU FAQs
Has Laytonsville adopted Ordinance 03-26?
The Town held a public hearing on Draft Ordinance 03-26 on September 1, 2026 and the agenda included discussion and possible action afterward. Approved September minutes are not yet posted, so final adoption should be confirmed directly with Town Hall.
Did Laytonsville already allow accessory apartments?
Yes under its older zoning framework. Maryland Planning’s statewide inventory documents an accessory-apartment definition covering units within the main house or in a separate existing accessory structure, with different district treatment and owner-occupancy requirements.
What is Laytonsville’s maximum ADU size?
The final local maximum was not publicly verifiable from approved ordinance text during this review. Maryland’s statewide framework allows an ADU up to 75% of the primary detached dwelling and covered jurisdictions may not impose a lower local maximum.
What are Laytonsville’s accessory-structure setbacks?
Maryland Planning’s published setback comparison cites Laytonsville’s older code as keeping accessory structures at least 5 feet from adjoining property lines in side or rear yards. Confirm the final ADU setback in Ordinance 03-26.
Does the Historic District matter?
Yes for affected properties. Laytonsville’s Historic District Commission discussed the ADU compliance ordinance draft in August, so owners in the historic area should confirm whether a separate HDC work permit or design review applies.
Who should I contact about a Laytonsville ADU?
Start with Laytonsville Town Hall, P.O. Box 5158, Laytonsville, Maryland 20882. The Town lists 301-869-0042 for Town Hall and publishes Planning Commission, Board of Appeals, permit and Historic District Commission information on its website.
Primary sources checked
- Town of Laytonsville — September 1, 2026 Town Council Meeting and ADU Public Hearing
- Town of Laytonsville — August 12, 2026 Planning Commission ADU Ordinance Review
- Town of Laytonsville — August 2026 Historic District Commission ADU Draft Discussion
- Town of Laytonsville — Town Council Meeting Minutes
- Town of Laytonsville — Current Public Notices
- Maryland Department of Planning — Statewide ADU Ordinance Inventory
- Maryland Department of Planning — ADU Setback Examples
- Maryland Department of Planning — HB 1466 ADU FAQ
Maryland ADU Guide is an independent research publication, not the Town of Laytonsville, Montgomery County, a law firm, architect or contractor. This page distinguishes Laytonsville’s older accessory-apartment framework from Draft Ordinance 03-26 and states exactly what was publicly verifiable as of September 19, 2026. Confirm the final signed ordinance and parcel-specific requirements with Town Hall before spending money on design or construction.
What to do next
Get the final status of Ordinance 03-26 before choosing an ADU size, parking plan or detached-unit location.
- Confirm who reviews the property.
- Ask Laytonsville Town Hall whether Ordinance 03-26 has been adopted and request the final signed text.
- Gather your zoning district, survey, historic-district status and utility information.
- Continue to the Maryland ADU planning tools.
Planning guidance is not permit approval.